Geogenanthus
Encyclopedia
Geogenanthus is a genus of plants with 3 species in the family Commelinaceae
Commelinaceae
Commelinaceae is a family of flowering plants. In less formal contexts, the group is referred to as the dayflower family or spiderwort family. It is one of five families in the order Commelinales and by far the largest of these with an estimated 650 species in 40 genera. Well known genera include...

 (the spiderwort and dayflower family). The genus is distributed from Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

 to Amazonian Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

 and Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

. Two of its species (Geogenanthus ciliatus and Geogenanthus poeppigii
Geogenanthus poeppigii
Geogenanthus poeppigii, commonly called the seersucker plant, is a flowering plant species in the family Commelinaceae . As currently circumscribed, the genus Geogenanthus includes two other species, G. ciliatus and G. rhizanthus. Geogenanthus undatus is an outdated synonym for G. poeppigii...

) are occasionally found in the horticultural trade as houseplants.

Systematics

Geogenanthus is a member of the subtribe Dichorisandrinae
Dichorisandrinae
- Overview :The Dichorisandrinae is a subtribe within the tribe Tradescantieae of the flowering plant family Commelinaceae. It consists of 5 genera and ca. 51 species....

 of the tribe Tradescantieae of the flowering plant family Commelinaceae
Commelinaceae
Commelinaceae is a family of flowering plants. In less formal contexts, the group is referred to as the dayflower family or spiderwort family. It is one of five families in the order Commelinales and by far the largest of these with an estimated 650 species in 40 genera. Well known genera include...

.

Morphology

Aerial shoots unbranched and determinate in length, up to 0.75 m, with a terminal rosette of leaves. The leaves at lower nodes mere tubular leaf sheaths. All plant parts somewhat succulent. In the wild, plants grow on the floor of primary rainforests and possess a shallow underground, short, branching rhizome. Unlike its closest relatives in the family, Cochliostema
Cochliostema
Cochliostema is a genus of plants with two species in the family Commelinaceae . The genus occurs from southern Nicaragua to southern Ecuador.-Systematics:...

and Plowmanianthus
Plowmanianthus
Plowmanianthus Faden & C.R.Hardy is a genus of plants with 5 species and 2 subspecies in the family Commelinaceae . The genus is distributed from Panama to Amazonian Peru and Brazil.-Systematics:...

, its roots are both tuberous (although weakly so) and actually penetrate the soil.

Flowers consist of 3 green-brown sepals, 3 blue, pink or purple petals fringed with moniliform hairs, 4-6 stamens - the posterior three of which may be bearded with monilifiorm hairs, and 3 connate carpels. Its flowers have no fragrance detectable by the human nose.
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