24 BOTANICAL GAZETTE [JULY 
Bidens Langlassei, sp. nov.—Herba (annua ?) erecta, circiter 
1 m. alta, parce ramosa; caule glabro, acute et perspicuissime 
quadrangulato, basi tumido et ligneo. Folia opposita, petiolata, 
petiolo adjecto 2.5-5.5 cm. longa, pariter 2.5-5.5 cm. lata, bi- 
aut tripinnata (summa pinnata aut indivisa), supra glabra, margine 
hispidulo-ciliata, infra remotissime hispida, ultimis segmentis — 
linearissimis, o.5—1 mm. latis, integris, acute apiculatis; petiolis 
3-7 mm. longis, plus minusve hispido-ciliatis, basi connatis. 
_ Capitula terminalia, ligulata, tenuiter pedunculata, pedunculis 
1-11 cm. longis. Involucrum basi sparsim hispidum, squamis 
duplici serie dispositis; exterioribus (12-16) linearissimis, fere 
glabris, 6~7 mm. longis; interioribus linearibus, margine diaphanis, 
circ. 3 mm. longis. Ligulae (6-7) flavae, subanguste ellipticae, 7— 
I 5-striatae, ad apicem denticulatae, circ. 1.5 cm. longae. — 
squamis interioribus similes sed demum longiores. A 
immatura. Ovaria (1-1.3 mm. longa) subplana, apice ay 
10-15 setulorum coronato. 
E. Langlassé 332, in clay soil at altitude of 1200 m., “Le Faixin,” southern 
Mexico (perhaps Farascon, Michoacan), September 8, 1898 (type in Herb. 
Gray). 
The description is drawn from the type and one cotype (the latter in U.S. 
Nat. Herb.). 
Bidens capillifolia, sp. nov.—Herba tenuis, verisimiliter 
annua, +3 dm. alta, ramosa, glabra (aut ramis ad eorum basim 
hispida); caule et ramis subteretis, striatis. Folia opposita, 
petiolata, petiolo adjecto 2-6 cm. longa, pinnata, foliolis linearis- 
-simis, indivisis aut lobatis, margine integris, o.5-1 mm. latis; 
petiolis o.6-1.5 cm. ee 5 ee meee ‘Capitula termi- 
nalia, discoidea, 1 ionge et tenuiter fp ) 4-15 cm. 
 Jongis. Involucrum basi plus minusve ‘setoso-hispidum, squamis 
: some serie Sooparyde weenie G5) linearibus, seh aut 
