Gerrit Davidse

Steyermarkochloeae is a tribe of the Panicoideae subfamily in the grasses (Poaceae), native to tropical South America. There are only two species in two genera, Arundoclaytonia and Steyermarkochloa. The tribe probably belongs to a basal lineage within the subfamily. Species in this tribe use the C3 photosynthetic pathway.

Steyermarkochloa is a genus of plants in the grass family. The only known species is Steyermarkochloa angustifolia (Spreng.) Judz., which is native to Colombia (Guainía), Venezuela (Amazonas), and Brazil (Amazonas). The genus name of Steyermarkochloa is in honour of Julian Alfred Steyermark (1909–1988), an American botanist. The Latin specific epithet of angustifolia is a compound word, with 'angusti-' derived from angustatus meaning narrowed and 'folia' meaning flower. The genus was first described and published in Ann. Missouri Bot. Gard. Vol.71 on page 995 in 1985. Then the species was

Arundoclaytonia is a genus of Brazilian plants in the grass family. The only known species is Arundoclaytonia dissimilis, native to the States of Amazonas and Pará in Brazil.

Altoparadisium is a genus of bunchgrass plants in the grass family. The species are native to Brazil and Bolivia in South America.

Agrostopoa is a genus of flowering plants belonging to the family Poaceae. Its native range is Colombia. Species: Agrostopoa barclayae Davidse, Soreng & P.M.Peterson Agrostopoa wallisii (Mez) P.M.Peterson, Davidse & Soreng Agrostopoa woodii Soreng, P.M.Peterson & Davidse

Pohlidium is a genus of Panamanian plants in the family Poaceae. The only known species is Pohlidium petiolatum, native to Coclé Province in central Panama.

Arthrostylidium judziewiczii is a species of Arthrostylidium bamboo in the grass family. The species is native to Central America, the West Indies, northern South America, and southern Mexico.

Canastra is a genus of bunchgrass plants in the grass family. Its species are endemic to Brazil.

Aulonemia jauaensis is a species of flowering plant in the family Poaceae. It is a bamboo endemic to Venezuela.

Aulonemia chimantaensis is a species of flowering plant in the family Poaceae. It is a bamboo endemic to Venezuela.

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Bulbostylis fluviatilis is a species of plant in the family Cyperaceae first described by Robert Kral and Gerrit Davidse. No subspecies are listed in the Catalogue of Life.

Arberella venezuelae is a species of bamboo endemic to Venezuela. It is found only in lowland rainforests in the upper Río Orinoco Valley, in the State of Amazonas. Arberella venezuelaeis a caespitose perennial up to 60 cm tall, unbranched above the base. Leaves are simple, lanceolate to broadly ovate, 8–11 cm long, 20–35 mm wide. Inflorescences are terminal and axillary racemes, 3–5 at each node, each consisting of one pistillate (female) spike at the tip plus several staminate (male) spikes from the sides of the rachilla below.

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