STANDLEY—STUDIES OF TROPICAL AMERICAN PHANEROGAMS. 449 
appended technical descriptions of two new forms, Hemsley lists 8 
species. More recently the group has been monographed by Brand 
in Engler’s Pflanzenreich.1_ Brand recognizes three sections which 
include 9 species and 1 subspecies. House, in the paper cited 
above, published a key to the known species, 11 in all, 1 of which he 
described as new. Examination of the material of the genus in the 
U. S. National Herbarium indicates the presence of several unde- 
scribed species, some of them very unlike any of these hitherto recog- 
nized. These new species, seven in all, are described in the accom- 
panying enumeration, which includes all members of the genus so 
far as now known. It is probable that more extended exploration 
of the mountains of Central and South America will bring to light 
a number of additional species. The writer has seen no specimens 
from Colombia or Nicaragua, regions in which some of the species 
doubtless occur. 
COBAEA Cav. 
Cobaea Cav. Icon. Pl. 1: 11. pl. 16, 17. 1791. (Name misspefled * Cobbea ” by 
Andrews and “ Cobea” by Desfontaines. ) 
Rosenbergia Orst. Vid. Medd. Naturh. For. Kjgbenhavn 1856: 30. 1856. 
KEY TO THE SPECIES, 
Corolla lobes linear or with linear tip. 
Calyx lobes densely long-villous; corolla lobes ovate 
at the base, abruptly contracted into a long 
linear tip_- ----- 5. OC. aschersoniana. 
Calyx lobes glabrous or minutely pilose; corolla 
lobes either linear or tapering gradually from 
the base. 
Stamens shorter than the corolla; corolla lobes 
bifid at the apex__- ~------------- 2. C. hookeriana. 
Stamens longer than the corolla; corolla lobes 
entire. 
Corolla yellow ; calyx segments villous-ciliate. 4. C. gracilss. 
Corolla purple or greenish purple; calyx seg- 
ments not villous-ciliate. 
Calyx lobes minutely pilose, about equal- 
ing the corolla tube; stigmas 
very short; corolla lobes of about 
equal breadth throughout, obtuse. 1. C. pendulifiora. 
Calyx lobes glabrous, much longer than 
the corolla tube; stigmas elong- 
ated; corolla lobes tapering to the 
long-attenuate apex ____.-----~-- 5. C. panamensis. 
oo 
* 27: 24-29. 1907. 
