LINDMAN, AMERICAN SPECIES OF TRICHOMANES SM. 51 



Cfig. 26) does to the West Indian and Guianian Tr. sphe- 

 noidcs (lig. 22, 23). 



The colour of adult fronds is green, in the Bra>^ilian 

 specimens (gathered in September at Rio de Janeiro) dark 

 green. Marginal hairs are neither very long nor numerous, 

 and in adult fronds have often fallen off altogether. — The 

 involucre is rather small, the lips about 0,r) mm long, and 

 0,7 mm broad. 



The cells are in most cases rather large, tig. 2h, F. H, 

 but are shorter than in Tr. piisilluin and nearly square; the 

 ai'e arranged in regular rows, 2 — 4 in the interspaces of the 

 veinlets. The walls are very thin, like those of Tr. sphe- 

 Hoides. The involucral lips, which I have examined micro- 

 scoi)ically, have a margin of relatively small and short cells, 

 fig. 25, G. I. — 



I have founded this species on specimens, gathered in 

 ■ French Guiana by Sagot in 1>S58 (n. 847, ex parte) and 1859, 

 some of them found intermixed in a tuft of Tr. Kraussii, the 

 others together with Tr. sphenoides. and in the latter case 

 impossible to separate without a good magnify ing-glass, which 

 had to be employed for every frond of the two entangled 

 plants. Intermediate forms — as to the venation — were 

 not found. — I further observed the same plant (or a proper 

 closely-allied species?) in Herb. Regnell in Stockholm, ga- 

 thered on trees on Corcovado mountain at Rio de Janeiro by 

 Mosén, n. 2719V/2, 20th September 1874. 



12. Trichomanes punctatum (Poir.) Hook, et Grev. em. 

 , Fig. 30 A, 31 A— C. 



Poiret, Encyclopédie méthodique. Bot., T. 8, p. 64, tesje Kaul- 

 fuss secundum Hook, et Grev., le. Fil., 1829, t. 23G; Hook. Spec. 

 Fil., 1, p. lic (ex parte?); Flora Brasil., fasc. 23, 1859, p. 276. 



Syn. IHdymoglossum punctatum Desv., Mém. Soc. Linn. de 

 Paris, 6," 1827—28, p. 330; Presl, Hymenophyllaceae, 1843, 

 p. 23. 



A plant, which is at once clearly characterized by its 

 .size, habit, and venation, and well described by Hooker and 

 Greville, who ought to be called the authors of the species 



