ANEMONE. RANUNCULACE2. I 
Cased tone carte ces Sab eee | 
A. trifolia L. Sp. i, 540. Involucral leaves with rare exceptions regular- 
ly trifoliate; leaflets ovate-lanceolate; rather regularly serrate, large, in well de- 
veloped specimens 2 to 8 inches long, and more than an inch wide; radical 
leaves subsimilar, but sometimes 5-foliate: peduncle long and slender, usu- 
ally more than 2 inches in length: flowers large, 15 to 16 lines in diameter: 
sepals white or pinkish: carpelsin a globular head. Idaho, Sandberg, to the 
Atlantic States and Europe. 
§ 3. OmaLocarpus DC. Style short, not plumose. Mature ach- 
enes smooth, orbicular, much compressed, wing-margined. Invo- 
lucre sessile, palmately parted or cleft, Peduncles 1-several. 
A. narcissiflora L. Sp. i, 542. Villous: radical leaves palmately 3-5- 
parted ; segments cuneiform, incisely many-cleft into linear lobes: involu- 
cral leaves similar, 3-5-cleft, sessile: peduncles several, umbelled, leafless: 
sepals white: carpels roundish-oval, much compressed. Alpine: Idaho to | 
Alaska and the Rocky Mountains. : 
3 THALICTRUM Tourn. Inst. 270. L. Gen. n. 597. 
Tall, usually smooth perennial herbs with 2- or 3-ternately 
compound leaves and dic-cious or polygamous flowers in panicles. 
Sepals 4-8, white or greenish, petaloid. Petals none. Stamens 
several ; with linear anthers on rather long almost. capillary fila- 
ments. Pistils few-several, becoming ribbed or veined achenes 
_ that are tipped: with the persistent style. 
T. sparsiflorum Turcz. in F. & M. Ind. Sem. i, 40; Stem firm, erect, 1- 
6 feet high, with ascending branches: leaves 3-ternate, ample, the lowest 
petioled ; leaflets approximate, short-petioled, thinnish, round- or spatulate- 
oblong, 3-15 lines long, slightly cordate at base, divided above into 3 obtuse 
or short-acuminate lobes that are again incised: flowers perfect, not large, 
erect or soon nodding on slender pedicels in a short, branched, leafy pani- 
cle: sepals obovate, whitish, soon reflexed: stamens 10-25, the short ex- 
serted filaments widened to the pointless elliptical anthers: achenes 9-15, — 
short-stipitate, obliquely obovate, with 4 or 5 low, often forked nerves on 
each side.. From the mountains of California to Alaska and Colorado. 
T. polycarpum Watson Bot. Cal. ii, 424. Stout, 3-8 feet high, glab- 
rous; leaves with short petioles or the upper sessile; leaflets variable, 3-12 
lines long, 3-lobed with acute or acuminate lobes: panicle narrow: flowers 
dicecious ; the staminate usually crowded, on short pedicels; anthers acute, 
on very slender filaments: fruit in dense heads; achenes compressed, 3-5 
lines long, on a short stipe. obovoid, turgid, tapering into a reflexed beak 
their thin walls with free, or anastomosing low veins: seed slender, terete, 
2 lines long. Along small streams from the Columbia river to California. 
T. Fendleri Engelm. in Gray Pl. Fendl.5. Stems 1-3 feet high, with 
3 105 cauline leaves, the lower ones petioled; the stalked remote leaflets often 
deeply cordate with three divergent lobes, the central or all of them again 
lobed, their divisions rounded or mucronate-pointed : flowers dicecious; stamens 
numerous; anthers linear, | --2 lines long, mucronate;akenes féw 10 numérous 
in the heads, snbstipitate, 2--3 lines long, obliquely oval or with the dorsal su- 
ture straightish, thin-walled, flattened, with 8 to 10 prominent nearly parallel 
ribs the median heaviest, not filled by the oblong or linear seed. From the 
Siskiyou mountains, in southern Oregon, to Arizona, New Mexico, and the 
Rocky Mountains. 
T. venulosum Trelease Proc. Bost. Soc. xxiii, 302. Glabrous and glau- 
cous. the stem, petioles and sepals purple-tinted, the foliage typically pale 
ot whitened: stem simple, erect, 7-20 inches high: stem leaves 2 or 3, long 
