1915] SHERFF—BIDENS 2IT 
chilensis,> and hence likewise must be synonomized with B. alau- 
Sensis. 
It is interesting to note that Bidens crithmifolia H. B. K. was 
suspected by SPRENGEL (Syst. Veg. ed. 16. p. 454. 1826) of be- 
longing to B. alausensis. A study of the types of both species 
shows, however, that they are entirely distinct. 
Fic. 1.—Type of Bidens alausensis H. B. K. in Herb. Mus. Hist. Nat. Paris; the 
two photographs slightly overlap. 
BIDENS TENELLA L., Amoen. Acad. 6:96. 1763.—This species, 
was included by DECANDOLLE (Prodr. 5: 605. 1836) among the 
“species non satis notae.” A sheet with two specimens exists 
however, in the Linnaean Herbarium. These are in good condi- 
tion and show at once that the species is in no way a Bidens, and 
‘ B. valparadisiaca was based (CoLta, /. c.) upon a specimen from Valparaiso, 
while B. chilensis, which DECANDOLLE himself equated with it, was based upon a 
ag wnnasie in the immediate vicinity, but to the northeast (‘circa Quillota,”’ 
s> 6. €.). 
