OBDEB 1. RANUNCULACE^E. 203 



(few, long-stalked (35 '), ternate, the segments stalked, simple, or incisely 3-lobed or 

 parted. Scape 816' high, silky pubescent above. Lvs. of the invoL totally unlike 

 the others, the segments 11^' by 1", placed (in flower) above the middle of the 

 scape. FL greenish, scentless: sepals commonly 8, all linear-oblong, 5 6" long, 

 soon falling. Heads of carpels !' long ; ach. flattened. Mar. Apr. 



4 A. parviflora MX. Invol. 2-leaved; sep. 5-6, oval; food of carpels globular. 

 Canada and northward. Stem 212' high, pubescent. Lvs. 3-parted, segments 

 cuneiform, 3-cleft, crenate lobed, those of the involucre similar, subsessile. Flower 

 whitish. (A. cuneifolia, Ph.) 



5 A. multifida DC. RED WIND-FLOWER. Invol. sliort-petiokd ; lateral peduncles 

 involucellate : heads of carpels oval. Rocks, northern Yt. and N. Y., W. to Lake 

 Superior; rare. Plant hairy, about If high. Radical Ivs. ternately divided, segm. 

 cuneiform, gashed into 3 linear acute lobes, petioles 2 4' long. Invol. 2 3-leaved, 

 similar, subtending 2 or 3 peduncles. Involucels 2-leaved, sessile. Fls. of 5 8 

 obtuse sepals, small, purple, varying to white. Jn. (A. Hudsoniana Rich.) 



6 A. Virginiana L. Invol. long-petioled; lateral peduncles involucellate ; heads 

 of carpels oblong) A tall species in dry woods and hilly pastures, Can. to Car. 

 Scape erect, 2-3 f. high, hairy, dividing above into about 3 long parallel 1-flowered 

 peduncles, middle one naked, lateral ones each with an involucel of two bracts. 

 Lvs. 2-3' by 3-4', 3-parted; Ifts. ovate-lanceolate, toothed and lobed; petioles 

 6 10' long, petioles of the bracts much shorter. Sepals 5, yellowish green. Fruit 

 woolly, in heads f ' long. July. 



l3. ALBA. Fis. larger; sep. white. Ledges, Vt. (Dr. Robbins.) 



7 A. cylindrica Gray. Invol. long-petioled; peduncles aU naked; head of carpels 

 cylindrical. Dry soils, Mass., N. H. to Iowa. Plant silky pubescent, 1 2f high. 

 Lvs. 2 3' wide, 3-parted ; segm. cuneate, deeply gash-lobcd and cut-toothed, petioles 

 3 6' long; ped. 3 6, 1-flowered, G -10' long, umbellate, sometimes one or two 

 with involucles ; sep. 5, silky, greenish-white, obtuse ; heads of fruit 1 J' long. May. 



8 A. nemorosa (and quiuquefolia) L. Low, smooth, l-flowered; invol. petiolate. 

 ' _ jf. A common and interesting little plant, 6 9 high, found in old woods, hedges, and 



in open fields. Radical leaf 1, ternate, segm. cleft or lobed. Invol. of 3 petiolate 

 leaves, placed in a whorl near the top of the stem, its bracts cut-toothed and 

 lobed, the lateral segments cleft, sometimes quite to the base, so as to render the 

 leaf quinate. At the top of the stem is a single wliite flower, purplish outside. 

 Apr., May. 



9 A. Fennsylvdnica L. Hairy : invol. sessile : ped. one, at length 2 or 3, lateral 

 ones involucellate. Shores and wet prairies, Can. to Penn. W. to Ind. and Wis. 

 Stem 12 to 20' high; Ivs. large, vein}', those of the root 5-parted, segm. cuneate, 

 3-lobed, pointed. Lvs. of the involucre 3-parted, acuminate-lobed and toothed. 

 First flower on a naked stalk. From its base arise two branches, each 2-leaved 

 (involuceled) and 1-flowered. Sep. 5, obovate, large, white. Jn. Aug. 



10 A. narcissiflora L. Villous ; involucre sessile ; achenia flattened. In Canada 

 and northward. Plant clothed with long silky hairs. Lvs. palmately 3 5-parted, 

 segm. cuneiform, incisely many cleft into linear acute lobes. Invol. somewhat 

 similar, the sessile leaflets 3 5-cleft. Flowers several, umbelate, white, on leafless 

 stalks. 



11 A. thalictroides L. RUE ANEMONE. (Fig. 361.) Glabrous, low; invol. 

 petiolate: ach. grooved. In woods, Can. to Ga., W. to Iowa, common. A fine 

 little plant of early spring. Root consisting of several oblong tubers ; Ivs. biter- 

 nate or triternate, the common petiole 2 1' long. Lfts. like those of the invoL 

 612" long, as wide, oval, subcordate, 3-lobed. Invol. of two ternate leaves 

 appearing as a whorl of 6 petiolulate Ifts. Flowers several, white varying to 

 pale purple. Hight 6 8'. Apr., May. (Thalictrum anemonoides MX.) 



12 A. coronaria L. Lvs. ternate, with multifid segments and linear mucronate 

 lobes : sep. 6, oval, close. From Levant. A hardy, flowering plant, with large 

 single or double variegated flowers. May.f 



13 A. hortensis L. Lvs. 3-parted, with crenate, cul-dentatel obes : invol sessile, 

 of oblong, entire or cut leaflets. Sep. 10 12, oblong. From Italy. A fine 

 garden species, with double and semi-double varieties of red, white, and blue 

 flowers. May.f 



