Nepenthes × sharifah-hapsahii
Encyclopedia
Nepenthes × sharifah-hapsahii is a natural hybrid between N. gracilis
and N. mirabilis
. It has been recorded from Borneo
, Sumatra
, and Peninsular Malaysia
,
although it was originally described as a species (N. sharifah-hapsahii) endemic to Peninsular Malaysia
, where it was said to grow at elevations below 1000 m.
The type material of N. × sharifah-hapsahii was collected by J. H. Adam
on the grounds of the Universiti Kebangsaan Malaysia
campus
on August 2, 2001. Both the holotype
(JHA 8000) and isotype
are deposited at the university's herbarium. The taxon
was named after the Universiti Kebangsaan Malaysia
Vice Chancellor, Professor Dato' Dr. Sharifah Hapsah Syed Hasan Shahabudin.
Nepenthes × ghazallyana is a heterotypic synonym of N. × sharifah-hapsahii.
s may be up to 20 cm long. Pitchers are infundibulate in the lower and upper portions and tubular in the middle. They measure up to 15 cm in height and 3.5 cm in width. The peristome
is cylindrical and 1 to 2 mm thick. It bears distinct inner teeth and ribs. The lid is orbiculate and covered with numerous glands on the lower surface. N. × sharifah-hapsahii has a racemose
inflorescence
, the axis of which is 30 to 35 cm long. The female inflorescence is unknown at present.
. The table below shows characters that distinguish these two taxa
, according to Adam and Hafiza.
Adam and Hafiza also noted that N. × sharifah-hapsahii is somewhat similar to N. tobaica
, from which it differs in several aspects of leaf and inflorescence
morphology. Unlike N. tobaica, N. × sharifah-hapsahii has overarched glands on the inner pitcher wall, one-flowered pedicel
s on the upper third of the male raceme
, and numerous longitudinal veins on the lamina.
Nepenthes gracilis
Nepenthes gracilis , or the Slender Pitcher-Plant, is a very common lowland pitcher plant that is widespread in the Sunda region. It has been recorded from Borneo, Peninsular Malaysia, Singapore, central Sulawesi, Sumatra, and southernmost Thailand...
and N. mirabilis
Nepenthes mirabilis
Nepenthes mirabilis , or the Common Swamp Pitcher-Plant, is a tropical carnivorous plant species of the pitfall trap variety. It has by far the widest distribution of any Nepenthes species and is known from the following countries and regions: Borneo, Sumatra, Thailand, Peninsular Malaysia,...
. It has been recorded from Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....
, Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
, and Peninsular Malaysia
Peninsular Malaysia
Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...
,
although it was originally described as a species (N. sharifah-hapsahii) endemic to Peninsular Malaysia
Peninsular Malaysia
Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...
, where it was said to grow at elevations below 1000 m.
The type material of N. × sharifah-hapsahii was collected by J. H. Adam
J. H. Adam
Jumaat Haji Adam is a botanist and taxonomist specialising in the carnivorous pitcher plant genus Nepenthes.Adam has described numerous Nepenthes taxa, mostly with C. C. Wilcock, including the species N. faizaliana and N. mapuluensis, as well as the natural hybrids N. × alisaputrana, N. ×...
on the grounds of the Universiti Kebangsaan Malaysia
Universiti Kebangsaan Malaysia
The National University of Malaysia is a public university located in Bangi, Selangor which is about 35 km south of Kuala Lumpur...
campus
Campus
A campus is traditionally the land on which a college or university and related institutional buildings are situated. Usually a campus includes libraries, lecture halls, residence halls and park-like settings...
on August 2, 2001. Both the holotype
Holotype
A holotype is a single physical example of an organism, known to have been used when the species was formally described. It is either the single such physical example or one of several such, but explicitly designated as the holotype...
(JHA 8000) and isotype
Isotype
Isotype can refer to:* In crystallography, an "isotype" is a synonym for isomorph* In biology, per the International Code of Botanical Nomenclature, the "isotype" is a duplicate of the holotype....
are deposited at the university's herbarium. The taxon
Taxon
|thumb|270px|[[African elephants]] form a widely-accepted taxon, the [[genus]] LoxodontaA taxon is a group of organisms, which a taxonomist adjudges to be a unit. Usually a taxon is given a name and a rank, although neither is a requirement...
was named after the Universiti Kebangsaan Malaysia
Universiti Kebangsaan Malaysia
The National University of Malaysia is a public university located in Bangi, Selangor which is about 35 km south of Kuala Lumpur...
Vice Chancellor, Professor Dato' Dr. Sharifah Hapsah Syed Hasan Shahabudin.
Nepenthes × ghazallyana is a heterotypic synonym of N. × sharifah-hapsahii.
Description
The stem of this hybrid is cylindrical, glabrous, and may climb to a height of 5 m. Leaves are leathery in texture, lanceolate or oblong in morphology, and 9 to 20 cm long. TendrilTendril
In botany, a tendril is a specialized stem, leaf or petiole with a threadlike shape that is used by climbing plants for support, attachment and cellular invasion by parasitic plants, generally by twining around suitable hosts. They do not have a lamina or blade, but they can photosynthesize...
s may be up to 20 cm long. Pitchers are infundibulate in the lower and upper portions and tubular in the middle. They measure up to 15 cm in height and 3.5 cm in width. The peristome
Peristome
The word peristome is derived from the Greek peri, meaning 'around' or 'about', and stoma, 'mouth'. It is a term used to describe various anatomical features that surround an opening to an organ or structure. The term is used in plants and invertebrate animals, such as in describing the shells of...
is cylindrical and 1 to 2 mm thick. It bears distinct inner teeth and ribs. The lid is orbiculate and covered with numerous glands on the lower surface. N. × sharifah-hapsahii has a racemose
Raceme
A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...
inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
, the axis of which is 30 to 35 cm long. The female inflorescence is unknown at present.
Identification
Nepenthes × sharifah-hapsahii most closely resembles N. gracilisNepenthes gracilis
Nepenthes gracilis , or the Slender Pitcher-Plant, is a very common lowland pitcher plant that is widespread in the Sunda region. It has been recorded from Borneo, Peninsular Malaysia, Singapore, central Sulawesi, Sumatra, and southernmost Thailand...
. The table below shows characters that distinguish these two taxa
Taxon
|thumb|270px|[[African elephants]] form a widely-accepted taxon, the [[genus]] LoxodontaA taxon is a group of organisms, which a taxonomist adjudges to be a unit. Usually a taxon is given a name and a rank, although neither is a requirement...
, according to Adam and Hafiza.
Morphological characters Nepenthes × sharifah-hapsahii Nepenthes gracilis Shape of upper stem Cylindrical Triangular or angular Lamina base Attenuate into petiole like region and the base not decurrent but clasping stem for about half its circumference Not attenuate into petiole like region and the base decurrent, wings extend almost over one internode Distribution of nectar glands on lower lid surface Numerous nectar glands distributed all over lower lid surface Nectar glands scarcely distributed on lower lid surface Type of digestive glands on inner wall cavity of pitcher Overarched glands: prominently covered by extended epidermal roof conceal more than half of the glands Exposed glands: epidermal roof covering digestive glands poorly developed exposed almost all part of the glands Peristome ribs Distinct Inconspicuous Pedicels 2-flowered on lower 2/3 and 1-flowered on upper 1/3 part of male raceme All 1-flowered
Adam and Hafiza also noted that N. × sharifah-hapsahii is somewhat similar to N. tobaica
Nepenthes tobaica
Nepenthes tobaica is a tropical pitcher plant endemic to Sumatra. It is particularly abundant around Lake Toba, after which it is named....
, from which it differs in several aspects of leaf and inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
morphology. Unlike N. tobaica, N. × sharifah-hapsahii has overarched glands on the inner pitcher wall, one-flowered pedicel
Pedicel (botany)
A pedicel is a stem that attaches single flowers to the main stem of the inflorescence. It is the branches or stalks that hold each flower in an inflorescence that contains more than one flower....
s on the upper third of the male raceme
Raceme
A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...
, and numerous longitudinal veins on the lamina.