20 4. CYATHEA. 



tori 6-10 in each segment." Mart. 1. c.,p. 77. t. 54. Hk. Sp. I. p. 20. C. oligo- 

 carpa, Kze. 



Hab. Brazil, Venezuela, Peru, Mexico, Guatemala, Salvin & Qodman, n. 358 ? and 

 14 ?. Martius has well represented in his plate the copious, glossy, ferruginous scales 

 which clothe the nascent frond (t. 54, f. 1), of which the author takes no notice in his 

 diagnosis. In the absence of these on bur copious specimens, named and unnamed, I could 

 not refer to any essential distinguishing character. Among our thus authenticated speci- 

 mens are Fendler's, n. 54, and Sellow, from Herb. Reg. Bras. Such good figures as those 

 of Martius must not be thought light of; but even they require to be accompanied by 

 good diagnoses, and, unless they are specially well-marked species, with some notice 

 also of the affinities. 



21. C. Sprucei, Hk. ; caud. 15 ft. high; st. stout, furfuraceous brown, 1 ft. 1., 

 bearing " long, slender, exceedingly fragile aculei," mixed with strong black 

 spines 1-3 lines 1., with a broad dilated base ; base of the st. clothed with very 

 long, silky or woolly, deciduous, crinite, pale scales, which have a dark line down 

 the centre ; fr. 5 ft. 1., lanceolate, bipinnate, glabrous or only slightly pubescent 

 on the costse, subrigido-coriaceous ; prim, pinnae 1-2 ft. 1., oblong, acuminate ; 

 pinnl. approximate, horizontal, 2 in. 1., subsessile, narrow-oblong, deeply pinna- 

 tifid ; lobes narrow, ovate, acute, the margins slightly recurved, entire ; sori very 

 copious ; invol. fragile, breaking into irregular lobes. 



Hab. Ecuador, Montafia di Canelos, and Tungaragua, alt. 4,000-6,500 ft. ; and Chinn- 

 borazo, alt. 3,000-4,000 ft., Spruce, n. 5744. This I at first took for C. Schanschin, but 

 the stipes (a portion' of a tree-Fern too much neglected by plant-collectors in general) is 

 quite different. 



22. C. mexicana, Schlecht. ; unarmed ; rachis and costa above pubescenti- 

 icabrous ; fr. bipinnate ; pinnl. lanceolate, acuminate, 3-4 in.- 1., pinnatifid, 

 glabrous ; lobes oblong, slightly falcate, rather obtuse, serrated ; sori chiefly at 

 the lower half of the lobe, on the back of a simple vein or at the forking of a 

 divided vein ; invol. very thin and membranaceous, fragile, and soon obliterated. 

 Schlecht. in Linn. 5. p. 616. Hk. Sp. 1. p. 15. C. denudans, Kze. and C. 

 hexagona, Fee (Moore}. C. Lindeniana, Presl Epim. 30. 



Hab. Mexico. I find this species to have the sorus sometimes on the back of a single 

 vein, and sometimes on the fork of a vein, so that there is no reason_to separate this 

 species, as some authors have done, from the great mass of Cyatfiece which have bi-tripin- 

 nate fronds, with which, too, it is naturally allied. Presl. gives a figure of the venation 

 (Tent. Pterid. t. 1. f. 8), but only represents the simple form, with dorsal sori. 



23. C. Gardneri, Hk. ; fr. bipinnate ; st. and main rachis nearly glabrous ; 

 pinnl. gradually and at the apex much acuminated, pinnatifid ; lobes oblong, 

 erecto-patent, obtuse, falcate, serrated, villous beneath, especially on the costa 

 and veins, lowest inferior one adnato-decurrent ; sori covering the whole under- 

 side of the lobe ; invol. almost globose, pale-brown, op:ique, with a dark mam- 

 millate apex, at length bursting with a small aperture at the top. Hk. Sp. p. 21. 

 t. 10. A. (where, for Tab. X. A. read Tab. X. B.). C. superfusa, Kze. 



Hab. Brasil, Gardner. A species of peculiar aspect, and remarkable for the adnata 

 and subdecurrent base of the pinnules. The involucres seem also to be unusually per- 

 sistent. 



24. C. ebenina, Karst. ; st. paleaceous below with large, lanceolate, glossy, 

 firm, acuminated scales, dark in the centre, and slightly asperous (scarcely 

 aculeate) ebeneous-black, as well the principal rachises ; fr. glabrous, 5-6 ft. 1., 

 nrm-membranaceous, bipinnate ; prim, pinnce 12-14 in. 1. ; pinnl. distant, all 

 rather long-petiolate, 3 in. 1., from a broad, oblong base, acuminate, pinnatifid, 

 deeply so and subpinnate below ; lobes broad, obtuse, serrate ; sori rather sparse ; 

 invol. with the cup breaking into unequal lobes. Karst. Fl. Coluinb. p. 3. t. 2. 

 and t. 100. / 2. (caudex.) 



Hab. Columbia, alt. 5,000 ft., Moritz, in Hb. Noslr.A very well-marked species; 



