A REARRANGEMENT OF AMERICAN PORTULACES. 39 
15. M. asarifolia. Claytonia asarifolia, Bong. Sitch. 
137. Radical leaves subcordate-reniform to rhombic-ovate, 
on long slender petioles: flowers white, in a simple raceme. 
—High mountains, from Alaska to Calif. and Nev. 
++ ++ Perennials with fibrous roots; racemes bracteolate. 
16. M. Sibirica. Olaytonia Subirica, Linn. Sp. 204. 
Leaves orbicular to lanceolate, the petioles not dilated at 
base: raceme geminate.—From Asia and Alaska to Calif. 
17. M. bulbifera. Claytonia bulbifera, Gray, Proc. Am. 
Acad. xii. 54. Leaves lanceolate to linear, their petioles 
short, widened and fleshy-thickened at base and so forming a 
bulb: raceme simple.—Southern Oregon and adjacent Calif. 
Grour IV. Sepals 2, broad, more or less scarious, persistent; 
eapsule 2-valved. 
9. SPRAGUEA, Torr. Pl. Frem. 4. t. 1. Succulent herbs, 
with small flowers spicately or capitately crowded at the 
ends of naked or leafy-bracted peduncles. Sepals nearly 
equal, emarginate at each end. Petals 4, unguiculate. 
Stamens 3, opposite the 3 larger petals, exserted. 
1. S. umpexzata, Torr.1.c. Biennial; stems all arising 
from a single crown: radical leaves spatulate to oblanceolate, 
with thick petioles 2 to 6 inches long: flowers in dense 
umbellate heads.—Siskiyou and Sierra Nevada Mountains. 
9 §. pantounaTa, Kell. Proc. Calif. Acad. ii. 187, fig. 56. 
Biennial: stems paniculately branching, forming a globose 
tuft near the ground, only 2 or 3 inches in diameter.—Imper- 
fectly known, from specimens found in a ravine some six 
miles west of Virginia City, Nevada. 
3. §. nuda. Calyptridium nudum, Greene, Pitt. i. 64. 
Annual, root fleshy-fibrous: leaves in a rosulate tuft 1 to 2 
inches long: flowers in a compact orbicular cluster of short. 
spikes.—California. 
4. §. multiceps. Depressed branching perennial: stems 
1 to 6 inches long, with densely leafy branchlets, leaves 3 to 
