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alpina (Ch. id. Blume); resinifera (Ch. id., Blume); polypodioides 
(Ch. id., Blume) ; pallida (Ch, id., Blume) ; repens, Presi; resistens, 
(Ch. id., Blume); parallelogramma (Ch. id., Kze.); nigrescens, 
Hook. ; anthriscifolia, Presi ; elata, Presi; aspera, Presi ; Bergiana 
(Ch. id., Schlecht.) ; rugulosa (Pteris id., Za Bill.) ; Millefolium, 
Hook. ; hostilis, Presi ; Purdieana, Hook. 
Frond rather small, bipinnate. 
Sp. distans (Ch. distans, Col. MSS.) 
Fronds small, deltoid, very compound ; segments very acute or 
cuspidate. Aspidotis, Nutt. 
Sp. Schimperi (Ch. id., Kunze) ; Californica (Aspidotis id., Nutt. 
MSS.) 
Adiantoidea. 
Sp. Capensis (Ch. id., Sw.) 
Fronds with tufted roots, no creeping caudex. Cheilanthoidez. 
Sp. radiata (Adiantum id., Linn., Sw., Willd., &c.) ; pedata, Hook. ; 
spectabilis, Zink ; perpaucula (Adiantum id., Kze.\; Gardneri, Hook. 
Genus 1V. CHEILANTHEs, Sw. 
“ Adianti, Allosori, Pteridis, Cassebeere, Notholene, Hypolepidis 
sp. auct.”—P. 75. 
‘Vain is the attempt to form any definite character which shall 
decide the proper limits of this genus.”—P. 75. So writes Sir Wil- 
liam Hooker: then, we would ask, why not abandon it altogether? 
Fronds simply pinnate. 
Sp. micropteris, Sv. 
Pinne or pinnules large for the Genus, broad ; white and powdery 
beneath. 
Sp. argentea, Kze.; farinosa, Kaulf.; pulveracea, Pr.; rufa, Don. 
Pinne or pinnules large for the Genus, broad ; not white or 
pulverulent nor scaly beneath. 
Sp. Dalhousiz, Hook. ; pteroides, Sw. 
