ADIANTUM. 47 



unless when the fructifications extend round the apex, and the roup;h and 

 even muricaled stijies. Jacquin's figure represents the habit of small 

 specimens very well, but not the pinuules, which are too short and too 

 blunt. 



95. A. microphjjllum, Kaulf. ; frond stibtviangular ovate 

 bi-subtripinnate, secondary pinna; snbapi)roximale narrow- 

 lanceolate much acuminate terminal one elongated lowest 

 pair generally bipartite, pinnules close-placed horizontally 

 patent chartaceous brown or dark green obliquely oblong- 

 ovate very acute antrorsely falcate, sujierior base truncate in- 

 ferior cuneate gradually smaller upwards, terujinal one usually 

 elongated subrhomboid, sterile ones dentato-serrate, sori sub- 

 binous (1 — 4) linear generally confined to the lower portions 

 of the superior margin, rachis slightly fusco-pubescent, stipes 

 black minutely muricato-scabrous. A. microphyllum, Kaulf. 

 En. Fil. p. 204. A. striatum, Schkuhr. Fil. t. 18,/. n—g. 

 {r-ery good). — a. pinnules submembranaceous olive-green. 

 Kze. in Linncjoa, ix. p. 80. PI. E.vsicc. Poep. in Herh.nostr. 

 — ft. rigid almost coriaceous dark brown (when dry). Klotzsc/i, 

 in Linncca, xviii. p. 554, and in Otto, PI. Cub. e.vsicc. in 

 Herb, nostr. n. 230. — y. rigid, chartaceous olive-brown, pin- 

 nules gradually tapering on the long point to an extremely 

 minute ultimate one. 



Hab. Jamaica {Schkuhr). a. Cuba, Poeppig (in Herb, nostr.) Ja- 

 maica, Mr. Lane.— 0. Cuba, Otto {Klotzsch, in Herb, nostr.) — y. St. Mary's, 

 Jamaica, Purdie. — It is unwillingly that I keep this fern distinct from A. 

 cristatum of Linnaeus. If is true the sori are found very much elongated 

 and constantly so on all the specimens I have noticed above : and they 

 again exhibit three rather distinct appearances. What I call a., which, 

 being Poeppig's plant from Cuba, described by Kaulfuss (and of which 

 Schkuhr's figure is a good representation), may be considered the type of 

 the species, has greener and much more membranaceous pinnules. — Var. /3. 

 has all the harshness and dark colour of true A. cristatutn : y. is remarka- 

 ble for the very regular manner in which the pinnules gradually diminish 

 to a nai'row point at the extremity. 



96. A. Kumeanum, Kl. ; 1 — 2 feet high, frond bi pinnate 

 dark green, pinna; 3 — 7 lanceolate acuminate terminal one 

 very long lower ones sometimes bipartite, pinnules ajiproximafe 

 chartaceo-membranaceous rather glossy broad dimidiato- ob- 

 long or subobcordate often dellexo-falcate, su])erior base trun- 

 cated inferior one cuneate, the sterile ones obscurely lobed 

 and serrated, fertile ones with coarser falcate teeth at the 

 upper margin and apex, sori in the deep sinus between two 

 connivent teeth, involucres semilunate, stipes ebeneous sea- 



