312 BOTANICAL GAZETTE [APRIL 
may even be founded upon two distinct plants from widely 
separate parts of the world. In fact, the sheet bears a ‘determi- 
nation by ScHuLTz BIPONTINUS, naming the plant “ad sinistram 
Pectis (tenella)? and that ‘‘ad dextram Charieis heterophylla 
Cass.”’ 
BIDENS ANDONGENSIS Hiern, Cat. Welw. Afr. Pl. 177:588. 1898.— 
At the time of describing this species, H1ERN confessed himself 
uncertain as to its generic status, owing to the insufficient material. 
Since then, however, an admirable, well developed specimen (John 
Gossweiler 3631, Angola, August 3, 1907) has been received at the 
Herbarium of the British Museum. This matches sufficiently in 
each detail the plant fragment and drawings on the type sheet, at 
the same herbarium, and proves conclusively that the species is a 
true Bidens. 
/ Bidens elata, comb. nov.— Bidens cernua L. var. elata Torr. and 
Gr., Fl. N. Amer. 2:352. 1842; Bidens dentata Wieg., Bull. Torr. 
Bot. Club 26:412. 1899, non Bidens quadriaristata DC. var. den- 
tata Nutt.; Bidens amplissima E, L. Greene, Pittonia 4: 268. 1901. 
—An excellent specimen of this species, collected by SCOULER at 
the Straits of De Fuca, is in the Torrey Herbarium, now included 
in the Herbarium of the N.Y. Bot. Garden. It is identical with the 
Scouler specimen of HooKER’s herbarium (now in Kew Herb.), a 
specimen referred by Hooker (Hook. Fl. Bor. Amer. 1: 314. 1833) 
to B. chrysanthemoides Michx. (but entirely distinct from Michaux’s 
two type specimens in Herb. Mus. Hist. Nat. Paris). It is iden- 
tical also with the type and cotype specimens of B. amplissima 
Greene. However, it is very different from the type (fig. 2) of 
B. quadriaristata DC. var. dentata Nutt. (in Herb. Brit. Mus.), 4 
plant cited synonomously by Torrey and Gray, but probably 
never seen by them, as indeed their failure to use their customary _ 
exclamation marks would partly imply. : 
WiecanD, following Torrey and Gray’s treatment, likewise 
equated these two plants, but GREENE (I. ¢.), who, however, had 
not seen NuTraLt’s type, justly denied their identity. Still 
GREENE’s name B. amplissima is superfluous according to rule 
of nomenclature, and the name elaia, supported by a description 
(“leaves . . . . unequally and incisely serrate,” etc., Torr. an 
