ADIANTUM. 27 



7/iedium) he yet pronounces A. fovearum, Raddi, to be a synonym. If 

 Dr. Klotzsch's specimens which we have received be the true plant 

 of Kaulfuss, I am inclined to keep it separate from intermedium, though 

 it is very closely allied. It still more nearly resembles the A. villosum, 

 L. ; and our specimen from Maynas, gathered by Poeppig, is inscribed 

 by Kunze with that name. The sori are, however, here copious and 

 nearly equal, though contiguous, but not continuous. — What I call var. 

 /3. ? may be something very different: it exists in Mr. J. Smith's Her- 

 barium, and has the pinnules 2 inches and 2\ long, and narrow : in other 

 respects it resembles our trianyulatum. 



52. A. denticulatum, Svv. ; " fronds pinnate or bipinnate, 

 pinnules trapezoid oblong acuminate subcrenato-denticulate 

 the upper margin soriferous." — Sw. Fl. Ind. Occ. p. 1711. 

 Syn. Fil. p. 123. Willd. Sp. PL v. p. 434. Adiantum lati- 

 folium, Lam. Encycl. excl. syn. Plum. Fil. t. 52, simple. 

 Pluken. Aim. ii. /. 252, /. 5, Sw., also simple and wilhout 



fructijication. 



Hab. Jamaica, Sicartz. IMarliuique, Plumier. — Most recent botanists 

 are silent on the subject of this fern, and Presl excludes it from his cata- 

 logue. The figures' referred to by Swartz are very unsatisfactory : both 

 represent the fronds simi)ly pinnate, Plumier's figure alone has fructi- 

 fication : each pinnule exhibits 3 large lunulate sori. Swartz notices its 

 affinity with the A. serrulatum, for which Sloane's figure 1, t. 35,/. 2, is 

 quoted, but which api)ears to be a simply pinnated state of A . pulvenden- 

 turn, of the monosorous group. This would seem to have distinct and 

 equal sori. 



53. A. proximum, Gaudich. ; fronds bipinnate, pinna3 9 or 

 10 alternate, pinnules oblong dimidiate truncate at the base 

 villous beneath, sterile ones with the superior margin and 

 apex dentato-subserrate, serratures denticulate, fertile ones 

 entire ovato-oblong obtuse, superior margin and a])ex sorife- 

 rous, sori distinct oblong subreniform, stipes subglabrous, 

 rachis villous, caudex creeping. — Gaudicli. in Freyc. Voy. 

 Bot. p. 403. 



Hab. Brazil ; Rio Janeiro, Gaudichaud. — Said to form a sort of con- 

 necting link between A. nllosum and serrato-deniatum, but having the sori 

 free, numerous and subreniform, and consequently belonging to the polyso- 

 rous group. 



54. A. Lancea, Linn. ; " fronds pinnate (bipinnate, »SV/-.)pin- 

 nae (and pinnules Stv.) opposite oblong, terminal ones trian- 

 gulari-hastate." — Linn. Sp. PI. p. 1557, Stvartz, Syn. Fil. p. 

 1 23. Willd. Sp. PI. V. p. 440. Sieh. T/ies. n.p. 65, /. 64,/. 78. 



Hab. Surinam {Sieber). — Liuuseus seems to have taken this up wholly 

 from Sieber's figure, and no modern author appears to be acquainted with 

 it. 



