100 HYMRNOPHYLLUM. 



with H. (knticulatum, S\v., niiinie, and also Mr. J. Smith, refer to Tricho- 

 manes, ai)(l with some j ustice, so lar as the form of the involuere is concerned, 

 which in iheni, and indeed in the two preceding species, is almost cylindrical, 

 with •> very short valves or lips; but the texture is thinner than is common 

 in 7'rir/ii»nancs, and the general affinity is rather with Ili/menophj/lhim. The 

 present speeies is small, singularly opaque, as if succulent when recent, and 

 the general appearance not much unlike some small spinous fucoid plant. 



43. n. secundum. Hook, et Grev. ; fronds ovato-lanceo- 

 late bipinnatilid, primary divisions somewhat flabellate falca- 

 to-rccurvcd, the scj^ments linear secimd dichotomous serrated, 

 involucres terminal on short axillary segments oval-oblong 

 somewhat compressed 2-valved half-way down, the valves en- 

 tire the base sunk, rachis winged its margin entire, stipes 

 terete not winged. — Hook, et Grev. Ic. Fil. t. 133. 



Ilab. Statcn Land (not " New Zealand "), Menzies. Ilermite Island, 

 Cape Horn, ./. D. Hooker. — A very elegant and remarkable species ; pri- 

 mary divisions falcato-recurvate and at the base subpalmate, especially the 

 lower ones ; the segments secund and pointing upwards, of a rigid texture, 

 becoming dark brown when dry. 



44. H.. cri.'itatuni, Hook, et Grev.; fronds oblong bi-tri- 

 pinnatifid, the segments rather long linear obtuse sharply 

 serrated with large teeth which exist also on the rachis and 

 veins at the back, involucres supraaxillary large orbicular 

 sessile much broader than the segments the apex and sides 

 sharply S]iinuloso-ciliate 2-valved to the very base, stipes 

 slightly winged above. — Hook, et Grev. Ic. Fil. t. 148. 



Ilab. On Cayambe, Andes of Quito, on the trunks of trees near the limits 

 of perpetual snow, at 14,000 feet of elevation above the sea, Jameson. — Re- 

 markal)le for its dark brown colour, the long spinulose crests on the back of 

 the rachis, costa; and veins, and the very large orbicular involucres, with 

 beautifully ciliated deep valves. Receptacles globose, large, causing a tu- 

 mid swelling in the lower half of the valves. 



45. H. .yj/'/iuIosum, H.B.K. ; erect, fronds ovate or ovato- 

 oblong bi-tri])innatifid, primary divisions spreading, segments 

 linear-oblong spinuloso-serrate rigid, involucres snbsessile 

 supraaxillary 2 — 3 together broadly obovate comjnessed en- 

 tire 2-valved two-thirds of the way down, stipes slightly wing- 

 ed above crinite. — H. B. K. Nov. Gen. Aw. i. p. 26. 



Ilab. Between Laguayra andCaraccas, 4 — 5000 feet of elevation, Hum- 

 boldt. Near Cuenca, Columbia, Jameson. — This plant, which I take to be 

 the //. spinulosum of Humboldt, has a stout caudex, 3 — 4 inches long, more 

 or less crinite and slightly winged above. Fronds ovate or oblong-ovate, of 

 a firm texture; the fertile divisions bearing 2 or 3 involucres on greatly re- 

 duced segments at their upper base. It differs from //. fucoides chiefly in 

 the broader and shorter fronds and in the involucres, which in all my spe- 

 cimens are entire and confined wholly to the upjier edge of the frond near 

 the base, and perhaps might safely be united to that species. 



46. H, fucoides, Sw. ; fronds oblong acuminate bi-tripin- 



