[Vor. 5 
146 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
5. P.floribunda Rydb. Bull. Torr. Bot. Club 28 : 279. 1901. 
Distribution: in the mountains of Colorado. 
6. P. Osterhoutii, n. sp.! 
Silvery stellate perennial from a simple or branched cau- 
dex; basal leaves small, blade lanceolate to hastate, usually 
acute, 5-10 mm. long, petiole 5-15 mm. long; cauline leaves 
from narrowly hastate or lanceolate to linear, 1-3.5 cm. long; 
caudex branches terminated by sterile, leafy soboles 1-4 ош. 
long; flowering stems lateral, decumbent-ascending, leafy, 
8-12 em. long; flowers yellow, conspicuous, fruiting inflo- 
rescence elongating; pedicels recurved, 1 cm. or more long; 
pods pendent, obcordate, base truncate or obtuse, apex deeply 
emarginate, cells inflated, rather loosely stellate; styles 
slender, about 4 mm. long, stigma capitate. 
Distribution: north central Colorado. 
Specimen examined: 
Colorado: Kremmling, Grand Co., June 22, 1907, Osterhout 
3477 (Rky. Mt. Herb.), TYPE. 
Named in honor of Mr. Geo. E. Osterhout, of Windsor, 
Colorado, who was the first to recognize its specific distinction 
from the other known species of Physaria. 
7. P. Newberryi Gray, Ives’ Rept. Colo. River, pt. 4, 6. 
1861. 
P. didymocarpa (Hook.) Gray, var. Newberryt Jones, Proc. 
Calif. Acad. Sci. II. 5 : 624. 1895. 
Distribution: northeastern New Mexico, southern Utah, 
northern Arizona, and southern Nevada. 
8. P. Geyeri (Hook.) Gray, Gen. Illustr. 1: 162. 1848. 
Distribution: eastern Washington to western Montana. 
9. P. oregona Wats., Proc. Am. Acad. 17 : 363. 1882. 
1 Physaria Osterhoutii, sp. nov., planta perennis undique indumento argen- 
teo-stellata; caudicis ramis adscen dentibus in a foliosas steriles terminanti- 
bus; foliis radicalibus petiolatis (petiolis 5-15 mm. ongis) plus minusve hastatis, 
laminis lanceolatis plerumque acutis; foliis caulinis аек sed (— 
1-3.5 em. longis; caulibus foliosissimis 8-12 cm. longis; corolla a; racemis 
remotifloris post anthesin; pedicellis fructiferis SER ра tn circa 1 c^ longis ; 
siliquis obcordatis basi truncatis vel obtusis, apice valde emarginatis laxe stellato- 
pubescentibus; stylo circa 4 mm. longo. — Collected at oo Grand Co., 
Colorado, June 22, 1907, Osterhout 3477 (Rky. Mt. Herb.), 
