112 NOTHOCHL^NA. 



Yar. flava; powdery substance beneath bright yellow. Vix 

 Gymnogramme flavens, Klf's. and Hook. Fil. Exot. t.A^ ? An 

 Acrostichum tereticaule, Desv. Journ. Bot. i. j). 274? 



Hab, Tropical America: Peru, Poeppig, Mathews, n. 755, M'Lean, Lechler, n. 

 1830; Ecuador, Huano, Spruce, n. 5632; Loxa, Ecuador, Seemann. Fee gives 

 Mexico as a locality, Schoffner ; and Sturm gives Juan Fernandez, on the autlio- 

 rity of Bertero, but Bertero's plant is N. Ckilemis. — What I have here called 

 \?LX.flava I cannot distinguish from A^. nivea, except in colour. I was at first 

 disposed to consider it a small form of Gymnogramme flavens, but this, in itssori, 

 is as true a Nothochlcena as N. nivea. Mettenius, on the genus Cheilanthes, re- 

 fers all of this group of Nothochlcena to Gymnogramme. 



9. N. tenera, Gill. ; caiulex " erect," stipites tufted slen- 

 der 2-3 inches long capillary and ebeneous-black as well as 

 the rachis and petioles, fronds very membranaceous glabrous 

 glaucous 3-4 inches long 1-2 broad deltoideo-ovate subtripin- 

 nate, primary pinnae (except the superior ones) petiolate 

 distant upon the rachis, secondary ones and the terminal 

 ones generally ternate, pinnules 2-3 lines long elliptical en- 

 tire sessile, the margin plane or scarcely revolute, costules 

 beaded as it were with little elevations on the under side, 

 sori of rather few sparse black capsules forming a line within 

 the margin. — Gillies, in Hook. Bot. Mag. t. 3055. Kze. in 

 Schk. Fil. Svppl.p. 44. /. 22./. 2. Metten. Fil. Hort. Lips, 

 p. 46. Cincinalis, Desv., Fee. 



Hab. Mendoza, eastern foot of the Chilian Andes, and baths of Villavicenzia, 

 Dr. Gillies. Bolivia, and on earth-walls about Tucuman, Tweedie. — The entire 

 absence of the powdery substance on the under side of the fronds, after a long 

 period of cultivation and increase from spores, led to the retention of this 

 as a species distinct from N. nivea ,- but some of my mature specimens from 

 Tweedie, exhibiting clearly traces of the powder, go far towards inducing me to 

 believe that it may not be specifically distinct from that. 



10. N. Chilensis, Hook.; caudex thick erect crowned with 

 copious subulate ferruginous scales, stipites tufted 2-4 inches 

 long rather stout deep-purple and as well as the rachis ebe- 

 neous glossy, fronds 2-3 inches long H-2 inches wide sub- 

 coriaceous glabrous naked above beneath white-farinose (not 

 very densely so) tripinnate almost to the apex, primary pinnae 

 (about 7-9) I to nearly 1 inch long very patent deltoideo-ovate, 

 opposite lower ones rather distant on petioles 2 lines long, 

 upper ones sessile approximate, secondary pinnae sessile ob- 

 long ovate horizontal 5-7 opposite approximate, lower ones 

 pinnated upper ones pinnatifid terminal one generally 3- 

 lobed, segments or pinnules oval-oblong about 2 lines long 

 entire or 2-lobed their margins slightly reflexed all soriferous 



