NOTHOCHLyENA. Ill 



tire slightly reflexcd, sori formed of black capsules immersed 

 in the pulverulent substance and forming a single series or 

 line close to the margin. — Hook. Sp. Fil. siqira, ii. p. \\Ci{name) . 

 Cheilanthes, Mart, and Gal. Fil. Mex. p. 73. t. 20. f. I. b 

 [only, and that very bud). Metten. Cheil. p. 20. Ch. mono- 

 sticiia, Metten. I. c. Ceropteris, Fee, Ime Mem. p. 44. t. 22. 

 f. 2 [excellent). N. argentea, Lowe, Ferns, i. t. 55. 'N. cre- 

 tacea, Liehm. Fil. Mex.p. 64 {and in Herb, nostr., small form). 

 — Var. lutea. Pteris lutea, Cav. Dem. p. 267 ? Siv. ? IVilld. ? 

 — Var. aurea. Pteris aurantiacea, Cav. Dem. p. 266? Siv.? 

 and IVilld.? — Nzx.~)-fido-palmata ; fronds less compound ter- 

 nate, primary lateral divisions unequally bifid deeply pinna- 

 tifid as well as the terminal division, segments lanceolate 

 crenate or entire. Probably a distinct species. 



Ilab. Mexico, Galeo(fi,n. 6442, Liebmann, Schaffner ; New Mexico, C. Wright, 

 n. 820; Galapagos, Scouler, Cuming, n. 110. — Var. lutea. Peru: Huanaco 

 (powder l)enea(li pale-yellow), Mathews, n. 981. Chilian Andes, Gillies. — Var. 

 aurea. Peru, Ruiz and Pavon ; hot valleys of Ecuador, Seemann, n. 946.— Var. 

 b-fido-palmata. California, Dr. J. M. Bigelow, in Whipple's Expl. ; New 

 Mexico, C. Wright. — I think I am correct in uniting those specimens which have 

 the differently-coloured pulverulent substance beneath ; and indeed there are va- 

 rious gradations between the purest white and bright gold-colour. I am most 

 doubtful about the 5-fido-palmate form, for my specimens, though very perfect, 

 yet curl up in drying so much that it is difficult to detect the exact composition 

 of the frond. 



8. N. nivea, Desv. ; "caudex ascending, stipites ebeneous- 

 brown glossy, fronds 6-10 inches long subcoriaceous glabrous 

 above, pilose (not in any of my numerous specimens) beneath 

 and there clothed with a white cereaceous pulverulent mass 

 ovate tripinnate below, primary divisions (or pinrifc) opposite 

 distant, secondary ones pinnate or tripartite, tertiary pinnae 

 short petiolate, lateral ones from a narrowed base cordate, 

 terminal ones from a cuneate base elliptical oblong ol)tusc 

 entire, secondary veins several times forked soriferous at 

 their apices, sori confluent exhibiting a continuous intrainar- 

 ginal line, the margin (of the pinnules) produced beyond the 

 apices of the veins very narrow scarcely thinner than the rest 

 (vix attenuatus)." Metten. — Desv.Journ.Bot.ni.p.93. Kze. 

 in Schk. Fil. Suppl. p. 4.3. t. 22. /. 1. Metten. Fil. Hort. Lips, 

 p. 46. Pteris, Xam. Cincinalis, Desv. Fee, Gen. p. 160. A- 

 crostichum, Desv. A. albidulum, Cav. Siv. Syn. Fil. p. 205. 

 t. 1./. 2. Willd. Sp. PI. V. p. 125. Nothochlfena, Stur:>, 

 Fil. Chil. p. 16. Gymnogramme nivea, Metten. Cheil. p. 7 

 (m note). N. incana, Pr. Rcliq. Hatnk. i. p. 19. /. 1./. 2.— 



