Plantae novae occidentali-americanae. 917 
one (rarely two), drooping on short slender pedicel: perianth segments 
narrowly oblong or oblong-lanceolate (in shape much like the leaves), 
obtusish, 2—3 cm long, twice as long as the slender filaments, dark- 
purple on the ontside, purple mottled with yellow within: anthers large, 
oval: style cleft only one-third its length or less: the thickened linear 
stigma somewhat recurved: capsules!) pyriform or broadly obovoid, about 
15 mm long, smooth, furrowed rather than angled at the sutures. 
In the timbered foothills of Mount Hood, Wasco Co, Oregon, by 
J. Lunell. 
2. Roripa pectinata A. Nelson, l. c., p. 35. 
Glabrous winter annual, with vertical taproot, most of the plants 
branching freely, beginning to blossom when quite small but in fruit 
1—3 dm high: winter crown leaves small, oblanceolate, from entire to 
pectinately toothed, withering early: those of the stem and branches 
larger, 2—6 cm long, mostly oblanceolate in outline but deeply pecti- 
nately toothed or lobed: the yellow flowers small and crowded but the 
naked racemes in fruit stout and half the length of the plant: sepals 
oval, yellowish with membranous margins,. slightly exceeding the oblong- 
spatulate petals: silique broadly linear, abruptly pointed by the almost 
sessile stigma, slightly curved, 12—16 mm long, ascending, on divaricate 
pedicels less than half as long as the silique: seeds rather large, pale, 
crowded, minutely impressed punctate. 
Most nearly allied to R. curvisilequa (Hook.) Bessey which differs 
from this in being minutely pubescent or subscabrous, with petals 
exceeding the sepals, siliques falcate and linear, somewhat torulose, and 
the seeds small, smooth and somewhat triquetrous. 
The leaves in young plants of the species now proposed are stri- 
kingly pectinate, the linear lobes either entire or with a few linear teeth. 
This species blossoms very early in the season and is in full fruit by 
May first in the type locality. Its ally comes into blossom and fruit 
much later in the season (June and July), Collected at The Dalles, 
Oregon, by Dr. J. Lunell, April 12 and April 16, 1903. Secured again 
by the same collector, in mature condition, May 4, 1906, at the type 
station. 
3. Sidalcea sylvestris A. Nelson, l. c., p. 36. 
Perennial from a rhizome which is sometimes thickened and corm- 
like: stems more or less clustered, mostly simple, slender, 5—10 dm 
high, green, inconspicuously and very sparsely pubescent below with 
short forked hairs, the inflorescence minutely stellate: leaves nearly or 
quite glabrous, the slender petioles somewhat hirsute with branched 
hairs: radical leaves 5—7 lobed, divided or parted, each lobe mostly 
3-toothed: stem-leaves palmately 5—7 foliate: leaflets linear, with conspi- 
cuous midnerve, 7 —12 cm long, 6—10. mm broad, tapering gradually to 
1) There is a possibility of error as to the capsule since the single fruiting 
specimen was secured at another time. 
