172 PTERIS. 



nearly all tripliyllous and petiolate. Folioles of the pinnules linear, 2 inches 

 long, ratlier less than ,\ an inch broad, slightly crenulatetl, obtuse ; lateral ones 

 shorter, sessile." — Our specimen unfortunately possesses neither stipes, nor cau- 

 dex, nor fructification, and I should hardly have deemed it worthy of a figure, 

 distinct as it no doubt is as a species, but for the sake of showing the vena- 

 tion which, on one and the same pinnule (and common to most of the pin- 

 nules), exhibiting one-half the veins united by arched (or angularly-arched) 

 veins adjacent to the midrib, while the rest are free, thus, as it were, uniting 

 in one and the same specimen, the supposed generic characters of Campteria 

 (itself a passage to Litobrochia) and true Pteris. As a species this is remark- 

 able for the pinnae, in themselves not unlike those of Pt. crenata, being all long- 

 petioled. 



27. Pt. (Eupteris) semidentata, Fee; 1^ foot high, frond 

 more than a span long ovato-deltoid acuminate submenibra- 

 naceous but firm tripinnate, pinnules patent distant |-J of 

 an inch long narrow-oblong subfalcate opposite or nearly so 

 more or less decurrent, apex (or sterile portion) coarsely ser- 

 rated, serratures muticous, terminal pinnules caudate acumi- 

 nate serrated, sori subintramarginal not extending to the base 

 nor apex, involucre membranaceous even close-pressed, veins 

 obscure not prominent simple or forked (never anastomosing), 

 stipes brown at the rather thickened base, the root and the 

 slender rachises (winged by the decurrent pinnules) strami- 

 neous very slender. (Tab. CXXVIII. B.) — Pteris semiden- 

 tata, Fee, 6me Mem. p. 32. /. 18./. 3. 



Hab. Province of Ocafia, N. Granada, Paramos, elev. 8-10,000 feet, Schlim, 

 n. 482. — This I cannot but consider a new species, though evidently allied to our 

 next species, Pteris gracilis, and, like it, it has not the anastomosing veins of 

 Litobrochia. It is a larger-growing plant, is less compound, with larger, broader, 

 more obtuse, more patent, more apart, subfalcate, and less decurrent pinnules, 

 with fewer and smaller serratures, always muticous : the texture is less pellucid, 

 the veining seen with more difficulty. I have only a solitary specimen, of which 

 our figure represents one of the lowest primary pinncc.* 



28. Pt. (Eupteris) gracilis. Fee ; about a foot high, caudex 

 a mere scaly knot throwing out many wiry fibres, frond 6 

 inches to a span long subpedately deltoid acuminate thin 

 membranaceous pellucid tri- below subquadripinnate, pin- 

 nules copious crowded \ an inch long less than a line wide 

 opposite or alternate linear acute tapering and the upper 

 ones especially very decurrent at the base pinnatifidly ser- 

 rated (except the soriferous portions), serratures setiferous, 

 terminal pinnae caudate, sori subintramarginal not extending 



* Since this sheet was in type, M. Fee has published figures of this species 

 (which we had called Pt. Schlimii), and of the following, and we are glad to have 

 the opportunity of changing the name of the present species to the older one of 

 Pt. semideutata. 



