31. PTEUIS, § EUPTKKIS. 157 



10. P. semipinnnta, Linn. ; st. 1 ft. or more 1., strong, erect, naked, bright 

 chesnut-brown ; fr. 12-18 in. 1., G-9 in. br., ovate-lanceolate, the upper part 

 cut down nearly to tlie rachis into numerous close entire linear lobes, 

 the largest of whicli are H-3 n. 1., \-^ in. br., the lower two-thirds with 



or 8 pairs of opposite distantly-placed pinnce, the largest of which are 

 3-6 in. I., with a long linear entire point, and a broad entire wing on the 

 upper side of the rachis, but the lower side with several I'medv piiml, 1-2 in. 1., 

 ^ in, br. ; tciture scarcely coriaceous, barren segni. finely serrated ; rachis and 

 both surfaces naked ; veins simple or once forked, ^ in. apart at the base ; invoL 

 membranous. — //.(■. Sp. 2. p. 1G9. Gard. F. t. 59. — /3, P.dispar, Kunze ; pinnce 

 more or less pinnate on the upper side also. 



Hab. Himalayas (ascending to 3-4,000 ft.), Hongkong, S. E.China, Japan, the Philip- 

 pines, and Borneo. — The two forms look very different when typical, but are connected 

 by intermediates. 



17. P. paucinerrata. Fee ; st. about 1 ft. ]., erect, naked, reddish-brown ; /;-. 

 (in our specimen) with a terminal pinna and a single unbranched lateral one on 

 each side, the former broadly lanceolate, 9 in. 1., 4 in. br. below, cut down nearly 

 to the rachis into linear oblong slightly falcate lobes, which are decurrent at the 

 base and bluntly crenate towards the point, the largest 2 in. 1., \ in. br. ; lat. 

 pinnce similar but smaller ; rachis and both surfaces naked ; texture sub- 

 coriaceous ; veins fine, once or occasionally twice forked, the lower ones ^ in. 

 to 2 lin. apart at the base ; sori continued nearly to the apex of the lobes. — Hk. 

 Sp. 2. p. 194. 



Hab. Mexico. — This and the next species have quite the habit of quadriaia-ita, but the 

 venation seems to distinguish them. 



18. P. litobrochioides, Klotzsch ; st. strong, erect, naked, bright chesnut- 

 brown ; /)•. 2 ft. 1., 18 in. br., the terminal pi n}ia 1 ft. or more 1., 2-3 in br., cut 

 down within a short distance of the rachis into numerous spreading linear 

 entire lobes, 1-1^ in. 1., ^ in. or more br., the lower sinuses rounded ; lateral 

 pinnce 3 or 4 on each side, similar to the terminal one, erecto-patent, the lowest 

 3 to 4 in. distant at the base, all unbranched in our specimens ; texture 

 coriaceous ; rachis and both surfaces naked ; veins conspicuous, once forked, 



1 lin. apart at the base ; sori reaching nearly to the apex of the lobes. — Hk, Sp. 

 2. p. 178. 



Hab. Gathered by Sir R. Schomburgk in British Guiana, and Dr. Spruce in the Amazon 

 Valley. 



**-x«- Bipinnatce. Lowest pinnce at least Mpinnatifid. Sp. 19-35. 



19. P. maratticefolia, Hk. ; st. stout, erect, quadrangular, deeply sulcate, glossy, 

 straw-coloured ; fr. ample, bipinnate, the upper part simply pinnate, with 

 several linear lobes which are slightly decurrent at the base, prominently 

 serrated towards the point, the longest 4 in. 1., \in. br. ; lower pinnce 6-12 in. 1., 

 pinnate, with numerous similar lobes on both sides and again compound with 

 smaller /)//(«/. on both sides at the base ; texture scai'cel}' coriaceous ; rachis and 

 both surfaces naked ; veins usually once forked, \ in. apart at the base ; sori not 

 reaching: to the apex of the lobes. — Hk. Sp. 2. p. 177. t. 122. B. P. flexuosa, 

 Mett. P. semiadnata, Philippi, 



Hab. Chili and Chiloe. — A very distinct species, easily recognizable by its large distinct 

 pinnules, of which only the lowest of the basal pinna? are again compound. 



20. P. Dalhousice, Hk. ; st. strong, erect, about 1 ft. high, polished, naked, 

 light-brown; /;•. 2-3 ft. 1., 12-18 in. br., tri- or quadripinnatifid ; upper pinnw 

 linear, unbranched, decurrent down to the next pair, lower ones sometimes 

 1 ft. 1., deltoid ; pinnl. with simple or occasionally with branched linear segm.. 



