16 PITTONIA. 
and very erect: sepals villous, reflexed : corolla 4 to 6 lines 
broad, the 5 petals oblong-obovate, obtuse, commonly per- 
sistent until the maturing of the achenes, these forming a 
subglobose rather large head; body of the achene com- 
pressed, but not thin, marginless, tbe sides strongly punctate 
under a lens, but smooth and glabrous, the beak stout and 
rather long, but with a more slender closely recurved tip. 
Along the Mancos River and other streams, June 22 and 
28, Baker, Earle and Tracy (38,39, 187). Distributed as R. 
acriformis, to which it bears nothing likea near affinity. It 
is, as I have said, most related to R. Bongardi, Greene, but 
differs essentially by its large and more or less persistent 
petals. 
CLEOME INORNATA. Annual, a foot high or more, erect, 
rather widely branching above the middle; lower face of 
leaflets, and also the inflorescence; sparsely hairy, the whole 
plant otherwise glabrous: leaflets 3, rather broadly lanceo- 
late, acute, entire, less than an inch long, racemes short and 
dense: calyx-teeth broadly triangular and cuspidately acu- 
minate: petals white or faintly purplish: stamens very 
short, not exserted, the filaments not longer than the linear 
anthers; stipe of ovary longer than the rather short erect 
somewhat ineurved ovary; the latter tipped with a very 
distinct slender and incurved style. 
Near Grand Junction, Colorado, 26 Aug., 1896. Related 
to C. serrulata (otherwise known as C. integrifolia) somewhat 
closely, this notwithstanding its small size, and almost in- 
conspicuous white flowers. The showiness of the flowers 
in most members of this genus is owing to the greatly elon- 
gated and distinctly colored filaments which always surpass 
the corollas; but here the stamens are short and almost 
included within the corolla. The prominent inflexed style 
is another notable character. 
