_” 
aa 
7. Plagiobothrys Fisch,& Meyer. Popcorn Flower. 
Small anmals with alternte hispid leaves often forming a basal rosette 
or the lowermost opposite. Flowers small, white, in ome-sided, coiled cymes, 
Calyx 5-parted. Corolla white, the limb saucer=shaped, the tube short, the 
throat closed by small protuberances. Stamens included. WNutlets wrinkled, 
attached at the base. 
oO Pubescence of stems spreading; corolla 4 mm. long | Pe. tenellus 
O Pubescence of stems appressed; corolla 1.5 mm. long 2. Pe scopulorum 
1. P. tenollus (Nutt.) A. Gray. Annual 65-20 CMe tall, usually branching 
from the base, the stems ascending, spreading hirsute; leaves of basal rosette 
1-2 cme long, 2-5 mme wide, oblanceolate, hirsute, the cauline few, mostly 
oblong-lanceolate, 5-10 mn. long; calyx-lobes linear-oblong, 2.5-3 mm. long, 
increasing somewhat in fruit, hispid with yellow hairs; corolla white, 4 mm. 
long; nutlets aaapanaen brownish, 1,5-2 mm, long shining, the back rounded 
with a low median ridge and numerous fine transverse ridges. ° a 
In meadows and along roadways in the grasslands, 
2. Pe scopulorum (Greene) Johnston. Annuals 5-20 cm. tall, the stems 
usually branching profusely at the base, forming a small bushy plant, some- 
times nearly sinple, appressed-hirtellous; lowermost leaves opposite, linear, 
1-3 cme long, 1-2 mm. wide, the upper similar, alternate, all hirtellous; 
calyx-lobes linear-lanceolate,1.5 mme long in flower, hispid, increasing to 
205 mme in fruit; corolla white, scarcely 1.5 mme long; mitlets silvery-green, 
1.5 mme long, narrowly ovoid, acute, with an acute ventral ridge extending 
below the apex on the dorsal side as well, the wrinkles acute, obliquely 
transverse. 
| 
At low elevations in pastures and meadows in muddy ground which later 
becomes dry, especially about the margins of vernal pools. 
ee 
