304 PITTONIA. 
involuere of 4 or 5 leaves which are distinct and herbaceous 
above, but scarious and united at base. Calyx vesicular and 
urceolate, thin-searious, only the unequal teeth herbaceous. 
Corolla salverform, with long and slender tube; the some- 
what dilated throat bearing the stamens, the whole mar- 
cescent-persistent, the dilated base of the tube still investing 
the thin apparently indehiscent capsule with its ripe seeds. 
Seeds many, obliquely somewhat cubical, the angles mem- 
branaceously margined or winged; testa thin, mucilaginous 
when wetted, but not developing spiraeles. 
A most distinct genus, as to vegetative and floral charac- 
ters ; one of its most remarkable peculiarities being the almost 
wholly connate cotyledons; a character not before pointed 
out. The fact that the leaves of the involucre are united at 
base has also hitherto been overlooked. 
G. NuDICAULIS. Collomia nudicaulis, Hook. & Arn. Bot. 
Beech. 368. Gilia nudicaulis, Gray, Proc. Am. Acad. viii. 
266,in part. Very small and slender, the single filiform 
stem seldom 2 inches high: the involucre 4-parted almost to 
the base and the segments lanceolate: flowers very small and 
inconspicuous. 
Plains of the northern interior from eastern Oregon to 
northern Utah and Colorado. 
Q. PULCHELLA. Much stouter than the preceding, but 
little taller, a pair of lateral branches commonly arising, 
with the main stem, from the axils of the cotyledons, and 
floriferous at summit: involucre 5-cleft and less deeply so, 
the segments ovate-lanceolate: flower clusters large and 
showy, the filiform corolla-tube nearly } inch long, and the 
expanded limb 4 lines wide or more, white or lilac, and in 
either color marked with a yellow center. 
Sandy plains of western Nevada ; distributed by Mr. C. F. 
L Ae 
Sonne, in excellent specimens, from near Steamboat Springs, — 
Washoe County. 
