Monographs Details: Trichomanes trollii Bergdolt
Authority: Maguire, Bassett. 1984. The Botany of the Guyana Highland - Part XII. Mem. New York Bot. Gard. 38: 1-84.
Family:Hymenophyllaceae
Description:Distribution and Ecology - General distribution. Eastem Colombia to Surinam. Amazonian Bolivia.Guayana Highland distribution. Epipetric or terrestrial, rarely epiphytic. COLO M B I A . Comis. Vaupes: Headwaters of Cafio Teemeefia, Rio Piraparana (tributaryofthe Rio Apaporis), Schultes & Cabrera 17395 (US). Comis. Amazonasor Vaupes: Jinogoje (mouth ofthe Rio Piraparana) and vicinity, ca 700 ft, Schultes& Cabrera 17612 (US). V E N E Z U E L A . Terr. Amazonas: Near summit peak ofCerro Sipapo (Paraque), 5900 ft, Maguire & Politi 27614-A (NY, U S ) ; SE baseof Cerro Duida, Cafio Negro, 225 m , Steyermark 57941 (US). Edo. Bolivar: CerroGuaiquinima, 1100 m , Maguire 33114 (NY, U S ) ; Sierra de Ichun, vicinity ofSalto Maria Espuma on the Rio Ichun, 500 m , Steyermark 90377 (US, V E N ) , Sof Salto Maria Espuma on the Rio Ichun, 500-625 m , Steyermark 90419 (US,V E N ) ; Auyan-tepui, Terraza de Guayaraca, 1100 m , Vareschi & Foldats 4 7U(US, V E N ) ; Chimanta Massif, SW-facing slopes of Chimanta-tepui (Torono-tepui),1000-1400 m , Steyermark 75391 (F, U S ) ; Chimanta Massif, along the RioTirica (Rio Apamren) just above Techine-meru, 470 m , Steyermark & Wurdack120 {¥, U S ) ; Chimanta Massif, N W part of Abacapa-tepui, 750-1100 m , Steyermark74813 {¥, U S ) ; Sierra de L e m a , headwaters ofthe Rio Chicanan, 680 m,Steyermark 89378 (US, V E N ) ; S W part of Cerro V e n a m o , near the waterfall ofthe Rio Venamo, 900 m , Steyermark, Dunsterville & Dunsterville 92904 (US,V E N ) ; S-facing slopes of Ptari-tepui, 1500-1520 m , Steyermark 59438 (US);

Discussion:

Type. San Carlos (Mapiri), Depto. La Paz, Bolivia, 1200 m. Troll 2531 (holotype B? not seen fragm U S ) .

Trichomanes trollii is not very m u c h distinct from T diversifrons (Bory) Mett. ex Sadeb. in Engl. & Prantl. T h e former species has narrow sterile frond segments which have mostly 2-3(-4) veins besides the costule mnning from the costa into each segment. T h e latter species has wider sterile frond segments which have mostly 5-8 veins. Obviously, the number of veins is correlated with segment width. T h e former species also has a narrower ala l(-2) m m from the sinus to the costae, whereas the latter species has a wider ala 1.9-3 m m wide. It is possible, however, to find some specimens which are difficult to place with certainty in either species, and so it m a y be that the two species form a continuum.

Distribution:Colombia South America| Suriname South America| Bolivia South America| Guyana South America|