144 28. LLAVEA. 29. CRYPTOGRAMHE. 30. PELL^A. 



and fertile frond ; texture herbaceous or, when mature, subcoriaceous ; rachis and 

 both surfaces naked ; invol. pale, membranaceous ; sori brown. Hk. Sp. 2. p. 

 122. O. lucidum, Spreng. Hk. Sp. 2. p. 121. 



Hab. Japan, China, North of India (ascending in Sikkim to 9-10,000 ft.), Java. The 

 plant common in Japan does not differ from the ordinary Himalayan form. 0. Capense, 

 Kunze, seems to be this reported from South Africa by mistake. 



GEN. 28. LLAYEA, Lagas. 



Sori linear, occupying the whole length of the changed pod-like segments of 

 the upper part of the frond. Invol. the same shape, rolled over and quite con- 

 cealing them. TAB. III. f. 28. 



1. L. cordifolia, Lagasca ; st. 1 ft. 1., strong, erect, naked, straw-coloured, 

 fibrillose towards the base ; fr. 1-2 ft. 1., 6-12 in. br., tri pinnate, the lower part 

 sterile with stalked ovate segm. 1^-2 in. 1., ^-f in. br., the fertile segments of the 

 upper part pod-like, 1^-3 in. 1. ; texture subcoriaceous; both surfaces naked; 

 veins prominent. //. Sp. 2. p. 125. Ic. PL t. 387-8. Ceratodactylis, J. Sm. 

 Mett. 



Hab. Mexico, ascending to 7,500 ft. 



GEN. 29. CRYPTOORAMME, R. Br. 



Sterile and fertile fronds usually different from tho same root; sori terminal 

 on the veins, at first separate, subglobose, afterwards confluent, the continuous 

 invol. formed of the changed margin of the frond, rolled over them till full 

 maturity. TAB. III. f. 29. This and Llavea differ from Pellaea Allosorus 

 rather in the dimorphic fronds than in anything else. 



1. C. crispa, R. Br. ; st. tufted, straw-coloured, polished, brownish, and 

 slightly scaly towards the base ; fr. 2-4 in. 1., 1^-2 in. br., oblong, tri- or 

 quadripinnatifid ; ult. segm. of the barren frond obovate-curieate, deeply pin- 

 natifid, those of the fertile frond pod-shaped, |--f in. 1. ; texture thickly 

 herbaceous, both surfaces naked. /3, C. JBrunoniana, Wall. ; habit of , but the 

 fertile segments oblong, about 3 lin. 1., 1 lin. br., with the invol. spreading in the 

 mature plant and a space left free from fruit in the centre. Hk. Sc Gr. t. 158. 

 y, C, acrostichoides, R. Br. ; habit larger and stronger, barren segments thicker 

 in texture and more prominently veined and not so deeply cut, the fertile ones 

 f in. or even \ in. 1., 1 lin. br., the invol. spreading when mature. Hk. & Gr. 

 t. 29. Hk, 8p. 2. p. 130. 



Hab. a, Arctic Europe to Lake Baikal, Mount Olympus in Bithynia, Etruria and 

 Sierra Nevada ; (3, Himalayas, at 10-15,000 ft. ; y, N. W. America, from Sitka and the 

 Arctic regions southward to Lake Superior, Oregon, and California. 



GENUS 30. PELL^EA. Link. Hooker. 



Sori intramarginal, terminal on the veins, at first dotlike or decurrent on the 

 veins, but soon running into a line. Invol. formed of the more or less changed 

 edge of the frond, quite continuous, sometimes very narrow. Allied to 

 Cheilanthes in habit of growth and geographical distribution, differing by the con- 

 tinuous involucre. Veins free in all the species except the last two. TAB. III. f. 30. 



