•2-2 CVAIIIKA. 



20. C. Cj leiilleaiia, Mart. ; "frond bipiiiiialed, racliis and 

 nerves above strigillose, beneath the nerves and nervules mi- 

 nutely chafly and slightly hairy, pinnules linear-lanceolate 

 acuminate sessile deeply pinnatifid, segments linear or sub- 

 lanceolate nearly straight acute crcnulate, sori in the lower 

 part of the segments 4 — 10." Mart I. c. p. 78. 



Hill). Jamaica, (Grm//e). — As a Jamaica plant, and communicated, wbicli 

 it is, by Dr. Gieville to Martius, I ought to be acquainted with it; but brief 

 specific characters, without figures or full diagnoses, will not suffice for dis- 

 tinguishing the species of Cyathea or allied genera, and thus the catalogue 

 of dubious species must be large. Martius does indeed observe of this that 

 it resembles C. canaliculata (a Mauritius species very unlike any Jamaica 

 one that I have seen), but that this latter "may be known from it by its 

 (larger) and more acuminated pinnae, the segments almost entire, the sori 

 crowded on all the segments," — and that C. Sekanschin differs in " the sti- 

 pes, vachis and lamina beneath being downy with true hairs, in the seg- 

 ments being more curved and more obtuse, in the lower ones of each pin- 

 nule being coherent, which in C. Grevilleana are altogether distinct."* 



Dubious Species of the West Indies, Mexico and South America. 



21. C. Delgadii,Voh\; Brazil. 



22. C. Sternhergii, Pohl ; Brazil. — This and the preced- 

 ing appear to be noticed and perhaps described in Sternberg's 

 ''Flora Orhls Priniig.'' but, if so, 1 have no access to the work. 



23. C. Tussacii,T)e%\. ; " partial lionds triplicato-pinnate, 

 pinnules adnate linear falcate obtuse entire, sori on each side 

 somewhat solitary at the base of the pinnules, rachis chaffy, 

 caudex arboreous." JJesv. Soc. Liini. Par. r. ii. p. 323. Ja- 

 maica, De Tussac. "Affinis C. glauccc, sed discolor nee glau- 

 ca." C. glanca, it may be remarked, is a Mauritius species, 

 and I have always observed there is little similarity between 

 the Cyaihae of the eastern and western world. Probably the 

 present is a pale variety of C arhorea. 



24. C. i)olyp(jdioides, "Sw."; " herbaceous, frond bipinuate 

 glabrous on both sides, leaves lanceolato-falcate acuminate, 

 leaflets oblong acute serrated, sori solitary on each side at 

 the costa." .S)?r. Syst. Veg. v. 'xs.'p. 126. — Brazil. I do not 

 find this species in Swartz . 



25. C. Wood'/cardwides, Kaulf. ; "fronds bipinnate, pin- 

 nules adnate oblongo-lanceolate obtuse obsoletely crenate at 

 the apex, costa hairy beneath, rachis rough above with hairs, 

 partial chaffy beneath, sori costal contiguous." Kaulf. Emim. 

 Fit. p. 255. Hab. ? 



* Dr. Greville informs me he has reason to believe that the description 

 of C Grevilleana, here quoted, was drawn up by Martius from a specimen 

 of our Alsophila aspcra. — Ic. Fil. t. 213 — o. 



