31 PTERIS, ?j EUPTERI3. 101 



33. P. flahelluta, Tliuni). ; st. 1 ft. or more I., strong, erect, naked, glossy, straw- 

 coloured ; /;•. 1-3 ft. 1., 1 ft. or more br. ; terminal pinna 0-12 in. 1., 2-.3 in. br., 

 made up of numerous almost contiguous erecto-patent linear lol)es 1-2 in. 1., 2-3 

 lin. br., wliicli reach down nearly to the rachis, and are finely serrated when 

 barren ; pinna; several on each side, similar to the terminal one, tiie lowest with 

 1 to 3 simihvr siwaW^v pinnl. from the l>ase on the lower side ; texture herbaceous ; 

 rachis and botli surfaces naked ; veins \ in. apart at the base, usually once forked ; 

 sori narrow, continuing along nearly the whole length of the segments. — /3, P. 

 Ascensioiiis, Swartz ; much smaller, the lower pinnas sometimes with several small 

 compound pinnules on both sides. — Hk. Sp. 2.p, 185. 



Hab. Cape Colony northward to Bourbon, Abyssinia, and Fernando Po. — This comes 

 very near P. arguta. The best character is in the sori, which here are longer and nar- 

 rower. The Ascension plant grows in a very exposed situation, and has more or less 

 horizontal fronds with ascending or nearly vertical pinnae. 



34. P. tremula, R. Br. ; st. 1 ft. 1. or more, strong, erect, naked, polished, bright 

 chesnut-brown ; //•. 2-4 ft. 1., 6 in. to 2 ft. br., the apex with a few closely-placed 

 linear entire lobes, which are decurrent obliquely at the base, the largest hardly 

 more than 1 in. 1., 1 lin. br. ; tipper pinna; simply pinnate, with numerous similar 

 lobes on both sides, the largest about 6 in. 1., more than 1 in. br. ; lower pinn<e 

 often very compound, sometimes 1 ft. 1. and bipinnate ; texture herbaceous ; rachis 

 and botli surfaces naked ; veins sunk, ^ in. apart at the base, usually once forked ; 

 sori copious, sometimes filling up the whole segment except the midrib. — Hk. Sp. 2. 

 2). 174. t. 120. B. — /3, P. Kingiana, Endl. ; ult. segm. larger, sometimes 1-|- in. I., 

 nearly ^ in. br., without being toothed. — Hk. Sp. 2. p. 188. 



Hab. Australia, Van Diemen's Land, and New Zealand. — j8 was originally published 

 from Norfolk Island, but some of the New Zealand specimens agree with it. I have 

 seen a specimen iu Herb. Eawson from the Cape, called P. caffra, Pappe. 



35. 1^. chihnsis, Desv. ; st. 6-12 in. 1., erect, naked, pale or brownish ; fr. 

 1-2 ft. 1., 9-18 in. br., deltoid, only the very uppermost lobes simple ; tipper 

 pinna; lanceolate, cut down nearl}' or quite to the rachis into short linear-oblong 

 2)innl.^ whicdi are finely serrated in the barren frond ; lowest pinnce sometimes 

 1 ft. ]., deltoid, with several bipinnatifid pinnl. on each side, the largest un- 

 divided segni. not more than ^ in. 1., ^ in. br. ; texture herbaceous, or slightly 

 coriaceous ; rachis and both surfaces naked ; veins sunk, oblique, about 1 lin. 

 apart at the base, usually once forked ; sori extending from the base to the apex 

 of the segments. — Hk. Sp. 2. p. 175. t. 120. A. 



Hab. Chili and Juan Fernandez. — Agardh gives also Peru. It is near P. tremula,, 

 but the segments are broader and shorter, and in the barren frond finely toothed. 



***** Tripartittc. Lowest pinnce much larger than the others, often nearly 

 equalling the central portion of the frond. Sp. 30-39. 



30. P. longipes, D. Don ; st. 1-2 ft. 1., erect, naked, straw-coloured ; terminal 

 pinna about in. 1., 1 in. br., with numerous erecto-patent linear-oblong lobes 

 on each side, which are cut down very nearly to the rachis, about J in. 1., 2 lin. br., 

 bluntly toothed towards the point when barren ; lateral 2nnnce numerous on each 

 side (often 20), not more than 1 in. apart, the longest simple one about in. 1., 

 the lowest large, compound, sometimes nearly as large as the central portion of 

 the frond, 1 ft. 1., in. br. ; fc.rf«re herbaceous ; rachis and both surfaces naked ; 

 veiits not prominent, once forked, about ^ in. apart at the base ; sori falling sliort 

 of the a()ex of the segments. — P. pellucens, Agardh. Hk. Sp. 2. p. 191. P. 

 Zollingeri, Mett. 



Hab. East Himalayas, Ceylon, New Guinea, and a plant, with more caudate pinnules, 

 and segments not so close, and decurrent at the base, gathered by Mr. Cuming in the 



