16 PROCEEDINGS OP THE AMERICAN ACADEMY 



( Wrightii) of PI. Wright, ii. 90, which we have also from Rothrock 

 aud from Lemmon. 



Bid ENS LEUCANTHA, Willd. This, the Coreopsis leucanthema^ L. 

 Amoen. Acad., 0. leucantha, L. Spec. ed. 2, 1282 (Desc. Fl. Ant. t. 

 583), and the C. coronata, L. as to Plumier's plant, I take to be quite 

 distinct from the radiate form of .5. pilosa. The B. striata, Sweet, 

 Brit. Fl. Gard. t, 237, represents a large-rayed form of it. 



BiDENS DONDLEFOLiA, Lcss. To this nuist belong no. 551 of 

 Ghiesbreght's Chiapas collection, perhaps also 569 and 570. 



BiDENS PROCERA, Don in Bot. Reg. t. 684. An older and surer 

 name for the plant which I had in PI. Wright, referred to B. foe.niculi- 

 folia, DC, probably correctly. It is known by its annual root, head 

 of numerous short and (for the section) broadish akenes (outer cuneate- 

 oblong and owX^ 2 lines long, inner cuneate-linear and 3 lines long), 

 not overtopping the disk, as in its allies, and the rather long and con- 

 spicuously barbed awns. Ilemsley has confounded it with the similar 

 perennial species, B. ferulcBfolia, DC, Coreopsis ferulcefolia, Jacq. Hort. 

 Schoenb. t. 375, and Bot. Mag, t. 2059, which I take to be the species 

 still cultivated in the gardens in a low form, and which has the narrow 

 linear akenes of the section, and short inconspicuously barbed awns. 

 But the fruit is not described by Jacquin, nor in the Bot. Magazine. 

 To C jjrocera, the annual species, I refer .Schaifuer's no. 231. Bour- 

 geau's 502, and perhaps Gregg's 397, which has no fruit, nor root. 

 To B. ferulcBfolia, Bourgeau's 954i. and 85 and 533 of Ghiesbreght's 

 collection. 



Allied to B. feridcefolia are B. dnucifolia, DC (if no. 1117 of Parry 

 and Palmer's collection is that species), and B, caucalidea, DC (to 

 which Parry and Palmer's 484 has been referred) ; perhaps also the 

 Cosmos chrysanthemijolius, HBK. t. 382, which is certainly a Blde/is, 

 and which should be re-examined at Berlin, to ascertain if it may 

 not have had yellow ligules. In that case, as the habitat " Nova 

 Hispania" is given with a query, this may be Bidens humilis, HBK. 



" Bidens Seemanni," Sclmltz Bip. in Seem. Bot. Herald, 307. 

 To this has been wrongly referred no. 485 of Parry and Palmer's 

 Mexican collection, which seems to be only Cosmos crithmifolius, IIBK. 

 But there is a plant of an early collection by Ghiesbreght, no. 2G4, 

 which may be it (if so, Cosmos Seemanni), having filiform divisions 

 to its leaves, and essentially beakless 6-awned akenes. Cosmos teiiui- 

 folius, Lmdl. Bot. Reg. t. 2007, is only G. bipinnatus^ Cav. 



Thelesperma ambigudm. This name is assigned to the radiate 

 species which replaces T.JiliJolium in the western part of Texas and 



