34 ADIANTUM. 



Zealaud Fcni wiih which I am actitiaiiited. — Var. ^. I consider a less per- 

 fect form of trapezifinme, with smaller, rounder, more entire, and blunt 

 pinnules. — Our y. has the pinnules more approximate, more spreadiuj;, 

 almost horizontal, the inferior oblique base cut oft' as it were by a much 

 longer line, and hence the lorm of the pinnse rather approaches to oblonpf; 

 but intermediate gradations exist in our herbarium among some speci- 

 mens ; and U])on these varieties themselves there are, here and there, cor- 

 dately rhomboid pinnules. Our specimen of A. trapeziforme of Cuba, 

 Poeppig (from Kunzc), evidently belongs to this variety, which may, I 

 think, be seen to pass inio our next species, A. cultratum, chiefly differ- 

 ing by iis blunt pinnules. 



()7 A. ciillratum, J. Sm. iiist. ; frond amjjle decouipouiul, 

 pinnules chartaceo-menibianacoous approxiniato peliolate 

 (upper ones shortly so) spreading nearly liorizontally oblong 

 obliquely rhomboid very obtuse lobed and subincised upper 

 base truncate and parellel witli the rachis lower base elon- 

 gated and arched (rarely straight) lobes soriferous, involucres 

 oblong-renilorm, stij)es rachis and pedicels ebeneous intensely 

 black. A. cultratum, {an Pr. Teni. Pierid. ? p. 157). J. Snt. 

 Herb. 



Hab. St. Vincent, Macrae, in J. Sm. Herb. St. Catharine's, Brazil, Ami- 

 strong. — Were this and the normal f(U'm ol A. trapeziforme only to be seen, 

 few would hesitate in pronouncing them two good and distinct species. But 

 with the large suite of specimens we have the good fortune to possess, a 

 passage to this from A. trapeziforme, through Galeotti's n. 6338, and our 

 var. y. of the latter species to the present, may without much difficulty be 

 traced ; indeed it differs from the last-mentioned variety of A. tra))ezifr)rme 

 in little else than the very obtuse pinnules. The narrow and oblong, and 

 spreading and approximated pinnules give the peculiar feature; but in our 

 A. cultratum some of the pinnules approach very nearly to cordato-rhomboid. 



68. A. siihcordalum, 8\v.; fronds ample supradecouipound, 

 pinnules large chartaceo-membranaceous glaucous beneath 

 all pctiolate obliquely rhombeo-cordate acuminated slightly 

 lobed the lobes equal approximate sometimes nearly entire 

 sterile portions more or less inciso-serrate or entire u])per 

 base truncate lower very oblique angles obtuse, sori reniform 

 copious ap])roximate, stipes rachis and pedicels ebeneous in- 

 tensely black. " Sw.'" Spreng. Syst. Veget. iv. p. 114. A. 

 betidinnm, Kaiilf. En. Fil. p. 207. A. truncatum, Raddi., 

 Fil. Brasil. p. 59, t. 78,/. 1 [pinnules less acuminated than 

 in vnj specimens). A. Klotzschianum, Presl, {specimen from 

 Dr. Klaizsch). 



flab. Brazil, C/iamisso and others. Gardner, n. 197 (A. penladactylon. 

 not Langsd. awl Fisch.) and n. r)2f)!), A. suhcordaliuii (with pinnules rather 

 more lobed and approaching to A. trapeziforme). — In deference to other 

 botanists, rather than froni my own conviction, 1 retain this as a species. I 



