36 BOTANICAL GAZETTE [JULY 
trisected, in having heads smaller, and in coming from a different 
region (“‘Differt a B. squarrosa foliis glabriusculis . . . . capitulo. 
minore, foliis etiam superis trisectis et patria’). But he had not 
seen the type material of B. squwarrosa, as is evidenced by his 
failure to use the abbreviation “‘v.s.’’ in connection with its descrip- 
tion (Joc. cit., 599). At Paris (in Herb. Mus. Hist. Nat. Paris) is 
still preserved KUNTH’s type of B.squarrosa. Upon the label are the 
words “‘ Bidens squarrosa mihi... . Caracas.”’ This is positively 
the specimen Kuntu had at hand in drawing up his description. 
It consists of a branchlet coming from a portion of a stem. The 
eaves of the branchlet are simple, as described by KunTH. One 
well preserved leaf, still attached,’ and certain similar but more 
fragmentary leaves, some of them broken loose, remain with the 
stem proper. These leaves are very important, as they establish 
definitely and beyond all question the identity of B. squarrosa 
with pubescent forms of B. tereticaulis DC., and not with B. 
reptans (L.) G. Don (with which it is equated by O. E. Schulz, 
loc. cit., 140). This will become evident on reference to pl. IX, 
drawn directly from the type with the utmost fidelity to all details. 
The presence of pubescence in this species is not of specific 
_ importance, a fact recognized by GREENMAN (loc. cit.) and by 
Scuutz (loc. cit., 142) when they treated very tomentose specimens 
as mere varieties of B. tereticaulis. Nor is the presence of several 
or even many undivided leaves of decisive value, a fact recognized 
by Rosrinson (loc. cit.) in treating as a variety of B. tereticaulis a 
specimen with all of its leaves simple. That CoutrTer (loc. cit.) 
treated his B. antiguensis (pl. X) as a distinct species? is easily 
explained by the fact that the strong superficial resemblance of _ 
: his first type specimen’s foliage to that of certain hispid forms of 
oS leucantha (L.) — led him to contrast seeds that species, 
. raat ey ee a ae Ce ae 
TATA ac 
At least @ Bessa omc appa” 
hencieat aes a Geen wee cs le 
Os od certain 
: genus Bidens, in the herbarium of Field Museum. a 
tema be noted that the Gu setuid inca. 2h 
