RANUNCULACE.E. (CROWFOOT FAMILY.) 37 



§ 1. PULSATILLA. Carpels numerous in a head, with long hairy styles 

 which in fruit forjn feathery tails, as in Clematis; flower large, usuallj with 

 some minute or indistinct gland-like abortive stamens answering to petals. 



1. A. patens, L.,var.Nuttallikna, Gray. (Pasque-flower.) Villous 

 with long silky hairs; peduucle solitary; flower erect, developed before the 

 leaves, which are ternately divided, the lateral divisions 2-parted, the middle 

 one stalked and 3-parted, the segments deeply once or twice cleft into nar~ 

 rowly linear and acute lobes ; lobes of the sessile involucre like those of the 

 leaves, at the base all united into a shallow cup ; sepals 5-7, purplish or whitish 

 (1 -1|' long), spreading when in full anthesis. — Prairies, 111. and Mo., thence 

 northward and westward. March -April. — A span high. Tail of carpels 2' 

 long. (Eu., Siberia.) 



§ 2. ANEMONE proper. Styles short, not plumose. Staminodia none. 



* Achenes densely long-woolly, compressed ; involucre far below the flower. 



-1- Stem single, from a small tuber ; sepals 10-20; style fliform. 



2. A. Carolini^na, Walt. Stem 3 -6' high; root-leaves once or twice 

 3-parted or cleft ; involucre 3-parted, its wedge-shaped divisions 3-cleft ; sepals 

 10-20, oblong-linear, purple or whitish; head of fruit oblong. — 111. to Neb. 

 and southward, ]\Iay. 



•t- -(- Stems several : sepals 5-8; style fliform. 



3. A. parviflora, Michx. Stem 3-12' high from a slender rootstock, 

 1-flowered; root-leaves 3-parted, their broadly wedge-shaped divisions crenate- 

 incised or lobed ; involucre 2 - 3-leaved ; sepals 5 or 6, oval, white ; head of 

 fruit globular. — Lake Superior, northward and westward. May, June. 



4. A. multifida, Poir. Stems from a branching caudex, silky-hairy 

 (6-12' high); princij)al involucre 2 -3-leaved, bearing one naked and one or 

 two 2-leaved peduncles; leaves of the involucre short-petioled, similar to the 

 root-leaves, twice or thrice 3-parted and cleft, their divisions linear; sepals 

 obtuse, red, sometimes greenish-yelloAv or whitish ; head of fruit spherical or 

 oval. — Rocks, etc., N. E. Maine to Lake Superior, north and westward; rare. 

 June. 



•«-•<-•>- Taller, commonly branching above or producing two or more peduncles ; 

 involucral leaves long-petioled ; sepals 5-8, silky or downy beneath (4-6" lojig), 

 oval or oblong ; style subxdate. 



5. A. Cylindrica, Gray. (Loxg-fruited A.) Slender (2° high), silky- 

 pubescent ; flowers 2-6, on very long upright naked peduncles ; im'olucral 

 leaves twice or thrice as many as the peduncles, 3-divided; their divisions 

 wedge-lanceolate, the lateral 2-parted, the middle 3-cleft ; lobes cut and toothed 

 at the apex; sepals 5, rather obtuse, greenish-white; head of fruit cylindrical 

 {V long). — Dry woods, N. Eng. to Mo., and northwestward. May. — Pedun- 

 cles 7 -12' long all from the same involucre and naked throughout, or one 

 involucellate in the middle. 



6. A. Virginiana, L. More loosely pubescent or glabrate ; involucral 

 leaves 3, 3-parted ; their divisions ovate-lanceolate, pointed, f^-t-serrate, the lat- 

 eral 2-parted, the middle 3-cleft; peduncles elongated, the earliest naked, the 

 others witli a 2-leaved involucel at the middle, repeatedly proliferous ; sepJs 5, 



