ADIANTUM. 5 



7. A. Seomanni, Hook. ; caudcx creeping knotted sending 

 down copious woolly roots, fronds ovate pinnated, pinnae few 

 large 4 — 6 on long slender petioles obliciuely and broadly 

 deltoideo-ovate acuminate not lobed coriaceo-menibrana- 

 ceous, sterile ones closely and deeply inciso-serrated stri- 

 ated with the copious veins dark brown green and glossy 

 above glaucous and opaque beneath, sori contiguous short 

 oblong or linear-oblong and elongated more or less combined 

 and continuous hard and coriaceous, stipes rachis and pe- 

 tioles black ebeneous and very glossy. (Tab. LXXXI. A.) 



Hub. San liOienzo, Verairuas, central America, Pacific side, Sccmann, 

 1838, n. 1 124. — All my specimens are simply pinnate, exhibiting no dispo- 

 sition to be compound, or I should have arranged the species with the Pcnta- 

 dacti/lon group ; though even among them there is nothing approacliing this in 

 the almost coriaceous texture of the fronds, the deeply and spinulosely ser- 

 rated margins of the sterileportions, the undivided (notlobed) margins and the 

 confluent and often continuous lines of very unequal coriaceous involucres. 

 In these particulars this fine species stands unique, and T have much plea- 

 sure in dedicating it to its discoverer, who accompanied Captain Kellett in 

 his voyages of research in the Pacific, in the quality of Naturalist, and de- 

 tected this plant at Veraguas in JNIarch, 18;}8. Many of the pinnae are 4 

 inches long and 2h broad. Were the sterile pinnules entire, I could al- 

 most consider it identical with A.plati/phyllum of Swartz and Kunze ; but 

 I am quite puzzled with Kunze's specimens oi ^^ j)lati/])/u/lliuu,^' which, as 

 before observed, are A. Kaulfussii, a species with whicli this has little affinity. 



8. A. Phi/llitidis, J. Sm. ; frond broadly ovale or subor- 

 bicular pinnate, pinna; 4 — 6 alternate petiolate large ellip- 

 tical-lanceolate much acuminated opaque dark brown and 

 coriaceous when dry, sterile ones unequally and obscurely 

 serrate upper superior margin rounded at the base lower 

 obliquely cuneate, veins forked free, sori continuous along 

 both margins, petiole decurrent upon the rachis, stipes 

 and rachis rough with ferruginous hairs. J. Sm. Fil. 

 Schomb. in Hook. Land. Journ. Bot. i. p. 197. (Tab. 

 LXXII. B.) 



Ilab. British Guiana, Sir Robert II. Scliomhirgk, n. 300. — Mr. J. Smith, 

 the only author who has noticed this plant (and the f)nly specimens known 

 are those from Sir 11. H Schomburgk), justly observes, "Tiiis is rather a pe- 

 culiar Adianlum: the circumstance of the petiole not being articulated 

 with the rachis gives the species such a distinct and very marked cha- 

 racter, that in the absence of sori it would scarcely be considered an Adi- 

 anium." In drying the pinnas become brown ; and the peculiar even- 

 ness and smoothness of the surface convey the idea that in a fresh 

 state they are fleshy. The venation is forked (not reticulate), indistinctly 

 visible. In size and general appearance, and in the continuous sorus, the 

 affinity is clearly with A. dolosiiin, Kzc, and our /I. Wilsoui. It would 

 seem from a further remark of AFr. J. Sniitli, 1. c, that he considered Kunze 

 had mistaken this for the hindstca macropluiUa, Kaulf. ; l)ut Kunze lias 

 since shown that it was A.dolosuin, Kze. and of this work, wiiieh lie iiad con- 



