Astereae
Encyclopedia
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Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
that includes annuals, biennials, perennials, subshrubs, shrubs and trees. Plants within the tribe are present nearly worldwide divided into 170 genera and more than 2,800 species. They are found primarily in temperate regions of the world.
The taxonomy
Taxonomy
Taxonomy is the science of identifying and naming species, and arranging them into a classification. The field of taxonomy, sometimes referred to as "biological taxonomy", revolves around the description and use of taxonomic units, known as taxa...
of the tribe Astereae has been dramatically changed after both morphologic and molecular evidence suggested that large genera such as Aster, as well as many others, needed to be separated into several genera or shifted to better reflect the plants' relationships. A paper by R. D. Noyes and L. H. Rieseberg showed that most of the genera within the tribe in North America actually belong to a single clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
, meaning they have a common ancestor. This is referred to as the North American clade. Guy L. Nesom and Harold E. Robinson
Harold E. Robinson
Harold Ernest Robinson is an eminent botanist and an entomologist.-Career:Dr. Robinson's systematic knowledge encompasses many groups of plants and even some insects. But his real specialty is the sunflower family and the bryophytes...
have been two of the most important taxonomists involved in the recent work and are continuing to re-categorise the genera within the tribe worldwide.
Selected genera
- Acamptopappus (A.Gray) A.Gray
- AchnophoraAchnophoraAchnophora is a genus of flowering plants in the daisy family.Species include:*Achnophora tatei...
F. Muell. - AlmutasterAlmutasterAlmutaster is a monotypic genus of asters containing the single species Almutaster pauciflorus , which is known by the common name alkali marsh aster. It is native to western North America from northern Canada to Mexico, where it grows in wet alkaline and saline soils such as inland salt marshes...
Á.Löve & D.Löve - AmellusAmellusAmellus is a genus of flowering plants in the family, Asteraceae....
L. - AmpelasterAmpelasterAmpelaster is a genus of flowering plants in the daisy family, Asteraceae....
G.L.Nesom - AmphiachyrisAmphiachyrisAmphiachyris is a genus of flowering plants in the daisy family, Asteraceae....
(DC.) Nutt. -- Broomweed - AmphipappusAmphipappusAmphipappus is a monotypic genus in the daisy family which contains the single species Amphipappus fremontii. It takes its scientific epithet, fremontii from John C. Frémont, and is known commonly as the chaffbush. Its common name "eytelia" is in honor of artist Carl Eytel...
Torr. & A.Gray - AphanostephusAphanostephusAphanostephus is a genus of flowering plants in the daisy family, Asteraceae....
DC. -- Lazydaisy - AridaArida (plant)Arida is a genus of flowering plants in the daisy family, Asteraceae....
(R.L.Hartm.) D.R.Morgan -- Desert tansy-aster - Aster L.
- AstranthiumAstranthiumAstranthium is a genus of flowering plants in the daisy family, Asteraceae....
Nutt. -- Western-daisy - BaccharisBaccharisBaccharis is a genus of perennials and shrubs in the aster family . They are commonly known as baccharises but sometimes referred to as "brooms", because many members have small thin leaves resembling the true brooms. They are not at all related to these however, but belong to an entirely...
L. - BellisBellisBellis is a genus of 15 species of flowering plants in the family Asteraceae, native to Europe and the Mediterranean region and northern Africa. One species has been introduced into North America and others into other parts of the world.-Description:...
L. -- Daisy - BelliumBelliumBellium is a genus of flowering plants in the daisy family, Asteraceae....
L. - BenitoaBenitoaBenitoa is a genus of flowering plants in the daisy family, Asteraceae. This is a monotypic genus containing the single species Benitoa occidentalis, which is known simply as benitoa...
D.D.Keck - BigelowiaBigelowiaBigelowia is a genus of flowering plants in the daisy family, Asteraceae....
DC. -- Rayless-goldenrod - BoltoniaBoltoniaBoltonia is a genus of plants in the Asteraceae family native to North America. There are about five species.Species include:*Boltonia apalachicolensis - Apalachicola doll's daisy*Boltonia asteroides - white doll's daisy...
L'Hér. -- Doll’s-daisy - BrachyscomeBrachyscomeBrachyscome is a genus of around 70 species of mostly annual and perennial herbs and a few subshrubs in the daisy family Asteraceae. 65 of these are endemic to Australia, the remainder being found in New Zealand and New Guinea...
Cass. - BradburiaBradburiaBradburia is a genus of flowering plants in the daisy family, Asteraceae....
Torr. & A.Gray -- Goldenaster - BrintoniaBrintoniaBrintonia is a genus of flowering plants in the daisy family....
Greene - CallistephusCallistephusCallistephus is a genus of flowering plants, in the Asteraceae ; the genus includes only one species, C. chinensis, the China Aster....
Cass. - CalotisCalotisCalotis is a genus of herbs or small shrubs in the family Asteraceae. Most of the species are native to Australia, while two occur in Asia.Species include:*Calotis ancyrocarpa J.M.Black - Anchor Burr-daisy*Calotis anthemoides F.Muell...
R. Br. - CamptacraCamptacraCamptacra is a genus of flowering plants in the daisy family, Asteraceae....
N.T.Burb. - CanadanthusCanadanthus modestusCanadanthus modestus is a genus of flowering plants in the daisy family, Asteraceae....
G.L.Neesom - CelmisiaCelmisiaCelmisia is a genus of perennial herbs or subshrubs, in the family Asteraceae. There are around 70 species; most are endemic to New Zealand, between four and 10 are endemic to Australia. The genus was first formally described by botanist Alexandre de Cassini in 1813.Species include:* Celmisia...
- CentipedaCentipedaCentipeda is a genus of flowering plants in the daisy family, Asteraceae.Centipeda is used medicinally in Traditional Chinese Medicine and also known as Shi Hu Sui, and Herba Centipeda....
Lour. - CeruanaCeruanaCeruana is a genus of flowering plants in the daisy family, Asteraceae....
Forssk. - ChaetopappaChaetopappaChaetopappa is a genus of plants in the daisy family which are known generally as leastdaisies. These wildflowers are native to western and central North America...
DC. - ChiliotrichumChiliotrichumChiliotrichum is a genus of flowering plants in the daisy family, Asteraceae. - Further Reading :*Bonifacino, José Mauricio. 2009. Taxonomic Revision of the Chiliotrichum group sensu stricto Smithsonian Contributions to Botany, no. 92, vi+119 pp. Washington, D.C.: Smithsonian Institution...
Cass. - ChloracanthaChloracanthaChloracantha is a monotypic plant genus in the aster family containing the single species Chloracantha spinosa, the spiny chloracantha or Mexican devil-weed. It is native to Mexico and the southwestern United States, where it grows in moist or damp areas in otherwise dry habitat, such as desert and...
G.L.Neesom - ChrysocomaChrysocomaChrysocoma is a genus of flowering plants in the daisy family, Asteraceae....
L. - ChrysomaChrysomaChrysoma is a genus of flowering plants in the daisy family, Asteraceae....
Nutt. - Chrysopsis (Nutt.) Elliott
- ChrysothamnusChrysothamnusChrysothamnus is a member of the plant family Asteraceae. It is a semi-deciduous shrub, sometimes also called sagebrush. The native distribution is in the arid western United States and northern Mexico...
Nutt. -- Rabbitbrush - ColumbiadoriaColumbiadoria halliiColumbiadoria hallii is a genus of flowering plants in the daisy family, Asteraceae....
G.L.Neesom - CommidendrumCommidendrumCommidendrum is a genus of four species of trees and shrubs in the family Asteraceae endemic to the island of Saint Helena in the South Atlantic Ocean. The vernacular name is gumwood or scrubwood.Species...
DC. - ConyzaConyzaConyza is a genus of about 50 species of flowering plants in the family Asteraceae, native to tropical and warm temperate regions throughout the world, and also north into cool temperate regions in North America and eastern Asia...
Less. - CorethrogyneCorethrogyneCorethrogyne is a genus of flowering plants in the daisy family, Asteraceae. Species include:*Corethrogyne filaginifolia - common sandaster, California aster...
DC. -- Sandaster - CrinitariaCrinitariaCrinitaria is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - CroptilonCroptilonCroptilon is a genus of flowering plants in the daisy family, Asteraceae....
Raf. - CuniculotinusCuniculotinusCuniculotinus is a genus of flowering plants in the daisy family, Asteraceae....
Urbatsch, R.P.Roberts & Neubig -- Rock goldenrod - DamnameniaDamnameniaDamnamenia is a genus of flowering plants in the daisy family, Asteraceae....
Given - DarwiniothamnusDarwiniothamnusDarwiniothamnus is a genus of flowering plant in the Asteraceae family.It contains the following species:* Darwiniothamnus alternifolius* Darwiniothamnus lancifolius* Darwiniothamnus tenuifolius...
Harling - DichrocephalaDichrocephalaDichrocephala is a genus of flowering plants in the daisy family, Asteraceae....
DC. - Dichaetophora A.Gray
- DieteriaDieteriaDieteria is a genus of flowering plants in the daisy family, Asteraceae....
Nutt. - DiplostephiumDiplostephiumDiplostephium is a genus of trees and shrubs composed of approximately 110 species . It is distributed on high mountains zones from Venezuela to Chile with the exception of two species in Costa Rica and twelve in the "Sierra Nevada de Santa Marta"...
Kunth - DoellingeriaDoellingeriaDoellingeria is a genus of flowering plants in the daisy family, Asteraceae....
Nees -- Tall flat-topped aster - EastwoodiaEastwoodiaThe monotypic plant genus Eastwoodia contains the single species Eastwoodia elegans, a flower known by the common name yellow mock aster or yellow aster. It is endemic to California. It is a shrub which sends up several erect stems, each bearing a rounded, bright yellow flower. The stems have a...
Brandegee - EgletesEgletesEgletes is a genus of flowering plant in the Asteraceae family. It contains eight species, including Egletes humifusa...
Cass -- Tropic daisy - EricameriaEricameriaEricameria is a genus of shrubs in the Asteraceae or daisy family known by the common names rabbitbrush, rabbitbush, and goldenbush. These are semi-deciduous shrubs familiarly known as to sagebrush. They are distributed in the arid western United States and northern Mexico. Bright yellow flowers...
Nutt. -- Goldenbush - ErigeronErigeronErigeron is a genus of about 390 species of flowering plants in the family Asteraceae. The genus has a cosmopolitan distribution with the highest species diversity in North America, where 173 species occur....
L. -- Fleabane, érigéron, vergerette - EucephalusEucephalus (plant)Eucephalus is a genus of flowering plants in the daisy family.Species include:*Eucephalus breweri*Eucephalus engelmannii...
Nutt. - EurybiaEurybia (botanical genus)Eurybia is a genus of plants in the composite family that were previously included in the genus Aster. All species are native to North America, though some are also present in northern Eurasia. There are 23 species in the genus including 1 hybrid. The name was first applied by Alexandre de Cassini...
(Cass.) Cass. - EuthamiaEuthamiaEuthamia is a genus of flowering plants in the Asteraceae, commonly referred to as Goldentop. The species were formerly classed with Solidago, the goldenrods....
(Nutt.) Cass. - FeliciaFelicia (genus)Felicia is a genus of flowering plants in the daisy family.Species include:*Felicia abyssinica*Felicia alba*Felicia amelloides*Felicia bergeriana*Felicia echinata*Felicia erigeroides*Felicia filifolia...
Cass. - FormaniaFormaniaFormania is a genus of flowering plants in the daisy family.Species include:* Formania mekongensis...
W.W.Sm. & J.Small - GalatellaGalatellaGalatella is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - GeissolepisGeissolepisGeissolepis is a genus of flowering plants in the daisy family....
B.L.Rob. - GrangeaGrangeaGrangea is a genus of flowering plants in the daisy family, Asteraceae....
Adans. - GrindeliaGrindeliaGrindelia is a genus of plants native to the Americas belonging to the family Asteraceae, . G. squarrosa, a plant with bright yellow flowers indigenous to much of the United States, is commonly called curlycup gumweed. G. robusta, found in the western states, is a coastal scrub bush that is...
Willd. -- Gum-plant, resin-weed - GundlachiaGundlachia (plant)Gundlachia is a genus of flowering plants in the daisy family, Asteraceae....
A.Gray -- Goldenshrub - GutierreziaGutierreziaGutierrezia is a genus of flowering plants in the sunflower family. Plants of this genus are known generally as snakeweeds or matchweeds. There are about 25 species found in North and South America. These plants contain chemical compounds which can be toxic to livestock and some are considered weeds...
Lag. - GymnospermaGymnospermaGymnosperma is a genus of flowering plants in the daisy family.Species include:*Gymnosperma glutinosum...
Less. -- gumhead, sticky selloa - HaplopappusHaplopappusHaplopappus is a genus of flowering plant in the Asteraceae family. Until the 1990s, Haplopappus was a wastebasket taxon for many species in the tribe Astereae, and most species have since been moved to other genera.-Selected species:...
- HazardiaHazardiaHazardia is a small genus of flowering plants in the daisy family. Plants in this genus may be called bristleweeds or goldenbushes. They are native to the western United States, especially California, and far northern Mexico. They are short, hardy perennials or small leafy shrubs. Some species have...
Greene -- Bristleweed - HerrickiaHerrickiaHerrickia is a genus of flowering plants in the daisy family, Asteraceae.Species include:*Herrickia glauca*Herrickia horrida*Herrickia kingii*Herrickia wasatchensis...
Wooton & Standl. - HesperodoriaHesperodoriaHesperodoria is a genus of flowering plants in the daisy family, Asteraceae....
Greene -- Glowweed - Heterotheca Cass.
- HysterionicaHysterionicaHysterionica is a genus of flowering plants in the daisy family, Asteraceae....
Willd. - IonactisIonactisIonactis, or the Stiff-leaved Asters, is small genus of five species, belonging to the sunflower family The generic name, Ionactis, is derived from two Greek words meaning "violet rays."...
Greene -- Ankle-aster - IsocomaIsocomaGoldenbush is a genus of about 12 species of flowering semi-woody shrubs from the sunflower family found mostly in the semi-arid areas of Southwestern United States and Mexico....
Nutt. -- Jimmyweed, goldenweed - KalimerisKalimerisKalimeris is a small genus with eight species from the sunflower family .It was first described in 1825 by the French botanist Alexandre Henri Gabriel de Cassini ....
(Cass.) Cass. - KemulariellaKemulariellaKemulariella is a genus of flowering plants in the daisy family, Asteraceae....
Tamamsch. - KippistiaKippistiaKippistia is a genus of flowering plants in the daisy family.The name commemorates Richard Kippist, librarian to the Linnean Society.Species include:* Kippistia suaedifolia...
F. Muell. -- Fleshy Minuria - LachnophyllumLachnophyllumLachnophyllum is a genus of flowering plants in the daisy family, Asteraceae....
Bunge - LaenneciaLaenneciaLaennecia or Laënnecia is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - LagenophoraLagenophoraLagenophora is a genus of flowering plants in the daisy family, Asteraceae. Species occur in South-east Asia, Australia, New Zealand, as well as Central and South America. These include:*Lagenophora gracilis Steetz - Slender Lagenophora...
Cass. - LessingiaLessingiaLessingia is a genus of plants in the daisy family which are native to western North America. Some species are endemic to California. Lessingias are generally daisylike in appearance with white, yellow, or purple flowers, but they vary in appearance. Some lessingias are sometimes treated as members...
Cham. - LorandersoniaLorandersoniaLorandersonia is a genus of flowering plants in the daisy family, Asteraceae. Tonestus peirsonii is sometimes included in this genus....
Urbatsch et al. -- Rabbitbush - MachaerantheraMachaerantheraMachaeranthera is a genus of flowering plants in the daisy family which are known by the common name tansyaster. Tansyasters are variable in appearance. Some are small singular wildflowers while others are sprawling shrubs. Several species easily hybridize with each other as well, making...
Nees - MiyamayomenaMiyamayomenaMiyamayomena is a genus of flowering plants in the daisy family, Asteraceae....
Kitam. - MonoptilonMonoptilonMonoptilon is a small genus of annuals in the aster family that are native to North America.There are two species*Monoptilon bellidiforme Torr. & A. Gray ex A. Gray...
Torr. & A.Gray -- Desertstar - MyriactisMyriactisMyriactis is a genus of flowering plants in the daisy family, Asteraceae....
Less. - NeonesomiaNeonesomiaNeonesomia is a genus of flowering plants in the daisy family, Asteraceae....
Urbatsch & R.P.Roberts -- Goldenshrub - NestotusNestotusNestotus is a genus of flowering plants in the daisy family, Asteraceae. There are two species....
Urbatsch, R.P.Roberts & Neubig -- Goldenweed, mock goldenweed - NolletiaNolletiaNolletia is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - OclemenaOclemenaOclemena E.L.Greene, is a small genus of flowering plants from the sunflower family .It is native to northeastern North America, found in wet or dry woodlands, and sometimes in clearings in the woods, or in acid bogs and peat....
Greene - OleariaOleariaOlearia is a genus of flowering plants belonging to the family Asteraceae. There are about 130 different species within the genus found mostly in Australia, New Guinea and New Zealand...
Moench - OonopsisOonopsisOonopsis is a genus of flowering plants in the daisy family, Asteraceae....
(Nutt.) Greene - OreochrysumOreochrysumOreochrysum is a genus of flowering plants in the daisy family....
(A.Gray) Rydb. - OreostemmaOreostemmaOreostemma is a genus of flowering plants in the daisy family, Asteraceae....
Greene -- Mountaincrown - OritrophiumOritrophiumOritrophium is a genus of flowering plant in the Asteraceae family.It contains the following species:* Oritrophium llanganatense* Oritrophium ollgaardii* Oritrophium tergoalbum...
(Kunth) Cuatrec. - PachystegiaPachystegia insignisPachystegia insignis is a species of flowering plants in the daisy family, Asteraceae....
(Hook. f.) Cheeseman - PentachaetaPentachaetaPentachaeta is a genus of the Asteraceae family; the entire genus is endemic to California. Of the six species members, at least one, Pentachaeta bellidiflora, is classified as an endangered species. The etymology of the genus name derives from Greek: Penta = five + chaeta = bristle, referring to...
Nutt. -- pygmydaisy - PeripleuraPeripleuraPeripleura is a genus of flowering plants in the daisy family, Asteraceae....
(N. T. Burb.) G.L.Nesom - PetradoriaPetradoriaPetradoria is a monotypic genus of flowering plants in the daisy family containing the single species Petradoria pumila, which is known by the common name rock goldenrod. It is native to the western United States, where it is quite common in many regions, carpeting areas in yellow blooms.-External...
Greene -- Rock goldenrod - PleurophyllumPleurophyllumPleurophyllum is a genus of flowering plants in the daisy family, Asteraceae. It contains three species and is native to the subantarctic islands of New Zealand and Australia .-Species:* Pleurophyllum criniferum Hook.f.* Pleurophyllum hookeri Buch.* Pleurophyllum speciosum Hook.f....
Hook.f. - PodocomaPodocomaPodocoma is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - PolyarrhenaPolyarrhenaPolyarrhena is a genus of flowering plants in the daisy family, Asteraceae....
Cass. - Prionopsis Nutt.
- PsiadiaPsiadiaPsiadia is a genus of flowering plant in the Asteraceae family.It contains the following species:* Psiadia anchusifolia* Psiadia argentea* Psiadia boivinii* Psiadia callocepahala* Psiadia cataractae* Psiadia dentata...
Jacq. - PsilactisPsilactisPsilactis is a genus of flowering plants in the daisy family, Asteraceae....
A.Gray - PsychrogetonPsychrogetonPsychrogeton is a genus of plants in the Asteraceae tribe, Astereae.It is native to Iran, Central Asia, and Anatolia....
Boiss. - PteroniaPteroniaPteronia is a genus of flowering plant in the Asteraceae family.It contains the following species:*Pteronia acuminata*Pteronia acuta*Pteronia adenocarpa*Pteronia ambrariifolia*Pteronia anisata*Pteronia aspalatha...
L. - PyrrocomaPyrrocomaPyrrocoma is a small genus of plants in the daisy family. These wildflowers are sometimes known as goldenweeds. They were previously considered members of genus Haplopappus and were separated out into their own genus. Pyrrocoma are perennial plants with reddish stems and yellow daisylike flowers...
Hook. -- Goldenweed - RayjacksoniaRayjacksoniaRayjacksonia is a genus of flowering plants in the daisy family, Asteraceae....
R.L.Hartm. - RemyaRemya (genus)Remya is a genus of flowering plants in the daisy family, Asteraceae. Species include:*Remya kauaiensis*Remya mauiensis*Remya montgomeryi...
Hillebr. ex Benth. & Hook.f. - RhynchospermumRhynchospermumRhynchospermum is a monotypic genus of flowering plants within the daisy family, Asteraceae. It contains the single species Rhynchospermum verticillatum. The genus previously included more species, but they have since been reclassified in the Apocynaceae under the generic name Trachelospermum. Some...
Reinw. - RigiopappusRigiopappusRigiopappus is a monotypic genus whose only species is Rigiopappus leptocladus. It is a flowering plant in the daisy family sometimes known as wireweed. It is an annual plant sending up slender stems terminating in small daisylike yellow flowers. It is native to the western United States. It is...
A.Gray -- wireweed - SericocarpusSericocarpusSericocarpus is a genus of flowering plants in the daisy family, Asteraceae....
Nees -- White-topped aster - SheareriaSheareriaSheareria is a genus of flowering plants in the daisy family, Asteraceae....
S.Moore - Solidago L.
- StenotusStenotusStenotus is a genus of flowering plants in the daisy family, Asteraceae. -Species:* Stenotus acaulis, stemless mock goldenweed* Stenotus armerioides, thrift mock goldenweed* Stenotus lanuginosus, woolly mock goldenweed...
Nutt. -- Goldenweed or mock goldenweed - SymphyotrichumSymphyotrichumSymphyotrichum is a genus of about 90 species of herbaceous annual and perennial plants in the composite family that were formerly treated within the genus Aster. The majority are endemic in North America, but several species also occur in the West Indies, Central and South America, as well as in...
Nees - TetramolopiumTetramolopiumTetramolopium is a genus of plants in the composite family . About 25 species are native to New Guinea, eleven species are found in Hawaii, and one in the Cook Islands, with the island populations apparently representing a recent colonization...
-- Pamakani - ThuroviaThuroviaThurovia is a genus of flowering plants in the daisy family.Thurovia triflora , is generally found ineast-central and south eastern Texas, and is the only species in the thurovia genus....
Rose - ToiyabeaToiyabea alpinaToiyabea alpina is a genus of flowering plants in the daisy family, Asteraceae....
R.P.Roberts - TonestusTonestusTonestus is a genus of flowering plants in the daisy family, Asteraceae. There are about four species:*Tonestus eximius*Tonestus graniticus*Tonestus lyallii*Tonestus pygmaeusSometimes Tonestus peirsonii is included....
A.Nelson -- Serpentweed - TownsendiaTownsendiaTownsendia is a genus of daisies known commonly as Townsend's daisies. These annual, biennial and perennial wildflowers are native to western North America, frequently at high elevation sites. A number of taxa are tall, erect plants, like typical daisies. Meanwhile, others form small, dense, leafy...
Hook. - TracyinaTracyinaTracyina is a monotypic genus of flowering plants in the daisy family, Asteraceae, containing the single species Tracyina rostrata, which is known by the common name Indian headdress. It is endemic to California, where it is known only from the grassy slopes of the North Coast Ranges north of the...
S.F.Blake - TriniteurybiaTriniteurybia aberransTriniteurybia aberrans is a genus of flowering plants in the daisy family, Asteraceae....
Brou. - TripoliumTripoliumTripolium is a genus of flowering plants in the daisy family, Asteraceae....
Nees - VancleveaVancleveaVanclevea is a genus of flowering plants in the daisy family.Species include:* Vanclevea stylosa...
Greene - VittadiniaVittadiniaVittadinia is a genus of flowering plants in the daisy family, Asteraceae.Species include:*Vittadinia arida N.T.Burb.*Vittadinia australasica N.T.Burb. - Sticky New Holland Daisy*Vittadinia bicolor N.T.Burb....
A. Rich. - XanthismaXanthismaXanthisma is a genus of flowering plants in the daisy family, Asteraceae....
DC. -- sleepydaisy - XanthocephalumXanthocephalumXanthocephalum is a genus of flowering plants in the daisy family, Asteraceae....
Willd. - XylorhizaXylorhizaXylorhiza is a genus of flowering plants in the daisy family which are known as woodyasters. These are daisylike wildflowers usually having blue to purple or white ray flowers with yellow centers of disc florets...
Nutt. -- Woody-aster - XylothamiaXylothamiaXylothamia is a genus of flowering plants in the daisy family, Asteraceae. Until 2003, it was held to contain nine species of shrubs native to deserts of Mexico and the southwestern United States. However, it seems to contain at least two groups. Four species are related to Gundlachia and may be...
G.L.Nesom -- desert goldenrod
Sources: FNA, E+M, UniProt, NHNSW, AFPD