MITELLA. SAXIFRAGACE. 201 
MITEL_ASTRA. 
M. Breweri Gray Proc. Am. Acad. vi, 533. ey pubescent 
with long crisp brownish hairs: scapes slender, 4-8 inches high: leaves 
round-cordate to reniform, obscurely 3-5-lobed, irregularly crenately 
toothed, with callous-apiculate teeth, 1-3 inches in diameter, on petioles 
3-4 inches long that are subtended by scarious ciliate brownish bracts: 
racemes 4-20-flowered: flowers on short spreading pedicels subtended by 
minute scarious bracts; calyx short-campanulate, with short and rounded 
somewhat scarious lobes, petals greenish-vellow, pectinately pinnate with 
3-5 filiform pinnza ; stigma distinctly 2-lobed. On the highest mountains, 
Brit Columbia to California. 
M. ovalis Greene Pitt. i, 32, Pubescent with long whitish hairs: 
scapes 6-18 inches high: leaves oblong-cordate, obscurely 5-7-lobed, re- 
tat toothed, 6-18 lines long, on rather stout petioles 1-4 inches long: 
owers numerous, on short erect pedicels that are subtended by minute 
scarious bracts, often two or three together on a short peduncle and thus 
somewhat paniculate; calyx saucer-shaped, its short rounded lobes green- 
ish-yellow; petals pectinately pinnate, with 3-5 rather short and distant 
pinnea; filaments subulate, inflexed; stigma slightly 2-lobed. Along 
mountain streams in wet places, Brit. Columbia to California. 
M. trifida Graham Edinb. New Phil. Journ. 185. Sparingly pubes- 
cent with coarse whitish hairs: scapes slender, 6-18 inches high, trom a 
stout rootstock: leaves broadly cordate to reniform, 12-18 lines long, cre- 
nately toothed, ciliate: flowers several, in a short secund somewhat cir- 
cinate raceme, on very short pedicels subtended by scarious white bracts: 
calyx campanulate, its oblong or triangular acute lobes white and petal- 
like, glabrous; petals ovate, on long slender claws, 3-toothed or 3-parted 
at the apex; stigma 2-lobed. On the high mountains of Washington and 
Oregon to the Rocky mountains. 
* * Stamens 5, opposite the petals. 
M. pentandra. Hook. Bot. Mag. t.293'. Sparingly pubescent with short 
white hairs: scapes slender, 6-12 inches high: leaves\cordate to round-ren- 
iform, obscurely 3-5-lobed, unequally serrate, an inch or more in diame- 
ter: flowers numerous, in a subpaniculate raceme, calyx short-campanu- 
late, its very short obtuse lobes green; petals pinnate with 7-9 approximate 
filiform pinnza: filaments very short, inflexed. In wet piaces, on the 
highest mountains. Alaska to Oregon and the Rocky mountains. 
18 MITELLASTRA. 
MITELLA § MITELLASTRA T. & G. Fl. i, 586. 
Low herbs with alternate leaves without stipules and small 
flowers in spicate cymes. Calyx short-campanulate, 5-cleft, co- 
herent with the base of the ovary. Petals 5, pinnatifid, inserted 
into the throat of the calyx. Deciduous. Stamens 5, not ex- 
serted, alternate with the petals. Styles 2, short and distinct. 
Stigmas simple. Capsule l-celled with 2 parietal many-seeded 
placentee, 2-valved. Seeds black and shining. 
M. caulescens. . Mitella caulescens Nutt. Retrorsely hispid and min- 
utely scabrous, especially on the petioles and stems: stems simple, soli- 
tary, slender, bearing 1-3 leaves with 1-2 scarious bracts below them, 
6-12 inches high, from a scaly slender caudex, propagating by long filiform 
runners: leaves broadly cordate, 3-5-lobed, the lobes crenately apiculate- 
toothed, 1-2 inches in diameter: flowers numerous, in a long slender sim- 
ple cyme, on long slender pedicels, reflexed in bud, soon spreading or 
erect; calyx saucer-shape, its lobes ovate, colored and petal-like; petals 
pectinately pinnatifid with 7-9 filiform pinnea; filaments subulate, nearly 
