1917] SHERFF—BIDENS 37 
from which he very properly regarded it as distinct. It is inter- 
esting to observe that CouLTER also noted the remarkable varia- 
tion in pubescence (‘‘exceedingly variable in pubescence, from 
glabrous to pilose-pubescent”’). 
B. Coreopsidis DC. var. procumbens Donn. Sm. is a form of 
this species. Its leaves are mainly 5-parted and are slightly 
narrower than in most specimens. It approaches rather closely 
B. reptans (L.) G. Don var. bipartita O. E. Schulz, of Porto Rico, 
but as a rule is quite distinct from that form. 
Since B. squarrosa thus is found to be so highly variable, it is thought 
best to present here a rather full and representative list of specimens studied: 
H. H. Rusby 1642, at altitude of 609 m., Guanai, Bolivia, May 1886; Mig. 
H. H. Smith 519, at altitude of 609 m., Jiracasaca, Santa Marta, Colombia, 
October 1898-1901; C. Hoffmann 383, Valley of the Rio Legardo, Costa 
Rica; Ad. Tonduz Sooke at altitude of 1800 m., forests of the Mala Via at 
Copey, Costa Rica, April 1898; idem 7265, banks of the Rio Maria Aguilar 
near San Jose, Costa Rica, December 29, 1892; idem 13600, in thickets, Nicoya, 
Costa Rica, January 1900; idem 7058, at altitude of rroo m., San Francisco 
de Guadalupe, Prov. San Jose, Costa Rica, January 1896; idem 7248, in thickets 
18, 1892; C. F. Baker 2121, Dept. Leon, Nicaragua, January 17, 1903; idem 
_ 2214, Masaya, Dept. Masaya, Nicaragua, January 27, 1903; H. Pittier 1838, 
at altitude of 600 m., in hedges around Copan, Honduras, January 9, 1907; — 
Luis V. Velasco 8873, San Salvador, Salvador, December 1905; W. A. Keller- 
man 5341, El Rancho, Sierro de las Minas Mountains, Baja Vera Paz, Gente: 
mala, January 6, 1906; idem 5351, at altitude of 1205 m., Moran, 
Guatemala, February 11, 1905; idem 6118, Volcano Acatenango, Chimalte 2 
nango, Guatemala, February 8, 1907; idem 8035, at altitude of 1067 m., El. 
Rancho, Sierra de las Minas Mountains, pais in toe temele, Jeetey 
1908; Maxon and Hay 3162, at altit de m., 
_ Alta Vera Paz, Guatemala, January 4 1905; JZ ; 
altitude of 1778 m., Antigua, Sacatepequez, Guat 
an 
D 
and Lux 4193, at altitude of 1956 m., Buena Vis Pt anta 
[ seh acer Ww. D. ASE at ee 79 
