164 31. PTERIS. CAMPTERIA. 



Heterophlebium, Fee. Veins free below, anastomosing towards the margin. 

 Sp. '44-46. TAB. III. f. 31. c. 



44. P. (Hetero.) lomariacea, Kze. ; sS.6-12 in. 1., wiry, flexuose, dark chesnut- 

 brown, naked ; Jr. deltoid, about 4 in. each way, with a terminal linear lobe 

 and cut down below to a broadly-winged rachis into 2 or 4 pinnae on each side, 

 the lowest of which are much the largest and again deeply lobed on the lower 

 side ; primary and secondary lobes of the barren frond -|j in. br., of the fertile, 

 longer, narrower, and more divided ; texture subcoriaceous, both surfaces naked ; 

 veins very inconspicuous, close, fine, anastomosing slightly towards the margin ; 

 costce dark-coloured and polished like the stipe ; invol. rather broad, mem- 

 branous, ultimately spreading. Pellsea, Hk. Sp. 2. p. 133. 



Hab. Gathered by Sir R. Schomburgk and Appun in British Guiana, by Pearce in 

 Peru, and Gardner and Lindberg in Brazil. This resembles very closely P. palmata in 

 habit, but the venation is quite different. The veins are very close, and nearly parallel, 

 simple or once forked, and the branches of the same veins or of two contiguous ones 

 occasionally join near the edge. The three plants brought together under this name in 

 " Species Filicum " must be separated, one to be placed near Pellcea geranicefolia, and 

 the other near P. palmata. 



45. P. (Hetero.) grandifolia, Linn. ; st. 6-12 in. 1., erect, naked, straw- 

 coloured, clothed below with rusty woolly scales ; Jr. 1-2 ft. 1., simply pinnate ; 

 pinnae linear, erecto-patent, entire, sessile, or the lower ones stalked, the lower 

 ones 6-12 in. 1., f-1 in. br. ; texture coriaceous ; rachis and both surfaces naked ; 

 veins fine, less than in. apart at the apex, anastomosing only in the outer third 

 of the space between the rachis and edge ; sort often continuous along the whole 

 length of the pinnae. Hk. Sp. 2. p. 201. t. 113. B. 



Hab. Tropical America, from Mexico and the West Indies southward to Peru. P. vit~ 

 tata, Schk., is a form with nearly free veins. Sir H. Barkly sends from Jamaica a form 

 with the pinnae curiously sinuated, and some of them branched. 



Campteria, Presl. Veins all free, except that those of the last divisions but 

 one are more or less connected by arching veins at the very base. Sp. 46-50. 

 TAB. III. f. 31. g. 



46. P. (Camp.) biaurita, L. ; st. 1-2 ft. 1., strong, erect, naked, straw-coloured ; 

 fr. with a terminal pinna 6-12 in. 1., l-2 in. br., cut down within from J-J in. 

 of the rachis into numerous spreading linear-oblong lobes on each side, which are 

 1 in. or more 1., J in. or less br. ; lateral pinnce several on each side, similar to 

 the terminal one, the lower ones 2 in. apart and usually once forked ; texture 

 subcoriaceous ; rachis and both surfaces naked ; veins prominent, those of the 

 ult. segm. quite free, usually once forked, | in. apart at the base, but the midrib 

 of the segments connected by an arching vein which passes from base to base ; 

 sori continued to the apex. Hk. Sp. 2. p. 204. 



Hab. West Tropical Africa, Mauritius, Bourbon, Hindostan (ascending in the Hima- 

 layas to 4,000 ft.), Ceylon, Java, S. China, Malayan Peninsula, and Tropical America 

 from the West Indies southward to Brazil. This differs only from P. quadriaurita in 

 the pinnae being less deeply pinnatifid, and the bases of the midribs of the segments being 

 connected by an arching vein. This arch springs normally from the bases of the midribs, 

 but sometimes begins and euds at points between them. It is sometimes triangular, but 

 sometimes very low, and in what Agardh considers as P. nemoralis, Willd.j we have the 

 venation considered as characteristic of biaurita combined with the entirely free vena- 

 tion considered as characteristic of quadriaurita in one and the same frond, so that they 

 must be regarded as very doubtfully distinct. P. Galeotti, Y6e P. amoena, Blume ; 

 P. Mettenii, Kuhn ; and P. armata, Presl, are apparently allied plants ; and 0, Kieini- 

 ana, Presl, and C. Anamallayensis, Beddome, I cannot distinguish clearly. 



