PLAGIOBOTHRYS BORAGIN ACE 485 
OREOCARYA 
++ ++ Calyx persistent, not circumscissile near the base: nutlets 
broadly ovate.and not at all cruciform. 
P. Shastensis Greene, Gray 1. c. 284. Canescently silky-tomentose: 
stem very slender, 4-10 inches high, not branching from the base, simple 
up to the 1-3 racemes: radical leaves linear to linear-spatulate, 4-8 lines 
long, appressed-silky above, hispid-ciliate; cauline leaves few linear-lanceo- 
late, smaller :racemes few-flowered; calyx cylindraceous,4 lines long silky- 
lanate both sides, cleft to near the middle; the lobes lingular and acute, 
nutlets shining, strongly incurved. carinate on the back, obscurely trans- 
versely rugose but not muricate. On a gravelly plain near Grant’s Pass 
Oregon, and Shasta Valley California. 
.P. colorans Greene Pitt. iii,262. Canescently tomentose or the leaves 
and calyces appressed-silky: stem 2-8 inches high, erect, not branching 
from the base: radical leaves linear, an inch or more long, in a loose rosu- 
late tuft; cauline leaves numerous, linear to lanceolate: racemes long and 
slender, few- to many-flowered often leafy-bracted below: calyx almost 
globular, 2-3 lines in diameter, cleft to below the middle, the acuminate- 
triangular lobes connivent over the fruit. sparingly hispid: nutlets broadly 
orbicular, abruptly stout-beaked, strongly carinate on the back, strongly 
transverse rugose, obscurely muricate on the ridge:. On gravel-bars along 
the creek at Hornbrook California; so near the state line that it may be 
looked for in adjacent Oregon. 
++ + ++ Calyx at maturity more or less promptly deciduous 
circumscissilly near the. base. 
P. canescens Benth. Pl. Hartw. 326. Villous-pubescent and some- 
what cinereous or canescent especially the calyx, which when young may 
be fulvous or even somewhat rufescent: stem diffusely branched from the 
base, 10-12 inches high: leaves linear: calyx 2-3 lines long, in fruit loosely 
erect or sometimes more open and accrescent, rarely disposed to be cir- 
cumscissile at base: nutlets opaque, not vitreous, slightly carinate on the 
back, rugose with sparse and somewhat reticulated obtuse wrinkles. Co- 
lumbia Valley to California. . 
?. nothofulvus Gray Proc. Am. Acad. xx, 285. Soft-hirsute through- 
oui: stems erect, 1-2 feet high, branching from the base: radical leaves 
oblong or lanceolate to linear, 1-2 inches long, numerous in a dense rosu- 
late tuft ; cauline leaves lanceolate to linear, sometimes 1 or 2 pairs opposite: 
racemes usually geminate or in threes with a flower in the fork, at length 
long and slender and loosely-flowered : calyx cleft only to the middle. silky- 
villous, rufescent only when young, soon fulvous or whitish, 1-2 lines long, 
the acuminate lobes connivent over the nutlets, soon circumscissile, leav- 
ing a persistent base which surrounds the lower half of the nutlets: corolla 
2-3 lines broad: nutlets abruptly stout-beaked, carinate on the back, trans- 
versely rugose and minutely granulate. Common on open hillsides, Brit. 
Columbia to California west of the Cascade Mountains. 
* * (Coarse and rough-hispid much branched low annuals with ob- 
long or lanceolate leaves, the upper subtending and equalling or ex 
ceeding the flower-clusters : nutlets inserted by a scar above the mid- 
dle, ventrally carinate only above the round scar, which is attached 
to the depressed gynobase by a small and soft false caruncle. 
.P. hispidus Gray |. c. 286. Rough-hispid throughout: stem stout, 
4-8 inches high, profusely branched: lower leaves linear-spatulate; upper 
leaves oblong, 6 lines long: calyx 5-parted, open in fruit, not circumscissile : 
nutlets turgid, ovoid, obliquely incumbent, acute at. the apex, obscurely 
carinate on tbe back, opaque, papillose-granulate, the scar hardly above 
the middle. Southeastern Oregon to eastern California. 
