54 OSTERHOUT: NEW PLANTS FROM COLORADO 
2. Phacelia formosula sp. nov. 
Biennial, 1.52 dm. high, stem single and upright, the flowering 
branches from near the top, or more commonly branched from 
near the base, the assurgent branches almost equaling the main 
stem, densely pubescent and somewhat hispid, becoming more 
glandular and hispid above; leaves lanceolate, or some of them 
oblanceolate, in outline. 5-7 cm. long pinnate with leaflets 5-10 
mm. long, 3-5 mm. wide, entire or toothed, a terminal portion 
lobed or pinnatifid, not much enlarged, hispid with rather short 
hairs, the upper more glandular; inflorescence of several branches 
of two-ranked scorpoid racemes becoming 3-5 cm. long, corolla 
blue, its Jobes rounded and entire, the filaments and style long- 
exserted; mature capsule the length of the calyx lobes, or very 
nearly so, 4 mm. long, four-seeded, the seeds 2.5 mm. long, rounded 
on the back, foveolate, the hollowed ventral side with a salient 
ridge lengthwise through the middle, the edges rounded. 
I am indebted to Mr. J. Francis Macbride of the Gray Her- 
barium for the information that Mr. C. F. Baker’s No. 758, col- 
lected at Ouray, Colorado, in 1901, is the original specimen from 
which Phacelia Bakeri (Brand) F. Macbr. was described. It is 
possible that P. formosula may be considered as closely related to 
P. Bakeri, which Dr. Rydberg has made a synonym of P. glandu- 
losa Nutt., or may be it might be considered the same species. 
But P. formosula is a rather smaller plant, the leaves are smaller, 
the hispid pubescense is not so coarse, the calyx lobes are narrower, 
and the capsule is smaller and shorter pediceled. The difference 
is also notable in the character of the seeds. Dr. Gray, in. the 
Synoptical Flora of North America, observed of the group in which 
P. glandulosa is placed, “seeds oblong or elliptical, flatter and thin- 
ner”’ than those of the group in which P. crenulata Torr. is placed, 
and it might be added that their edges are surrounded by a thin 
flat margin. P. formosula has ‘‘seeds with excavated ventral 
face divided by a salient ridge,” and rounded edges, like those of 
P. crenulata or P. corrugata A. Nels., except that they are not 
corrugated on the edges. The seeds are like those of P. splendens 
Eastw., only smaller. 
The only locality from which I have P. formosula is North 
Park, Colorado; and the type specimens were collected near 
Walden, along the road descending to the Michigan Creek, 
August 6, 1918, No. 5794. : 
