THALICTRUM. 1. RANl/NCULACE^E. 147 



Leaves 2 or 3-ternate, with ovate-lanceolate leaflets, variously lobed and cut. 

 Petioles 4 1' long, smooth, and slightly glaucous, like the whole plant. 

 Flowers 20 40, in a short dense raceme. Berries bright red, on slender pedi- 

 cels. May. 



2. A. ALBA. Bw. (A. Americana. /?. alba. Ph.} White Bane-berry. 



Lvs. twice and thrice ternate ; roc. oblong ; pet. truncate ; pedicels of the fruit 

 thicker than the peduncles ; berries white. Grows in rocky woods, common, 

 Can. to Ga., much like the last in foliage. Plant 1J 2f. high, bearing 2 com- 

 pound leaves and a cluster of flowers. Leaflets 1 2' long, as wide, acumi- 

 nate. Raceme 1 3' long, !' thick, the pedicels f long, at length purple, and 

 about as thick as the purple peduncles, characters which, as well as the milk- 

 white fruit, readily distinguish this species from the last. May. 



15. CIMICIFUGA. 

 Lat. cimex, a bug,fugo, to drive away ; alluding to its offensive odor. 



Sepals 4 5 ; petals 3 8, sometimes wanting ; stamens 00, 

 anthers introrse ; follicles 18, oblong, many-seeded. 1j- Lvs. ter- 

 nately divided. Pis. white, in long slender racemes. 



1. C. RACEMOSA. Ell. (Actaea. Linn. Macrotys. Raf.} Black Snake-root. 

 Lvs. ternately decompound ; Ifts. ovate-oblong, incisely serrate ; roc. very 



long; pet. 2, forked, slender; sty. 1 ; capsule follicular, dry, dehiscent, ovate. 

 A tall, leafy plant, with the aspect of an Actaea, found in upland woods. Stem 

 4 8 f. high, with long, panicled racemes of white sepaled and monogynous 

 flowers. Petals 4 6, small. Stamens about 100 to each flower, giving the 

 raceme the appearance oi a long and slender plume. Flowers very fetid. 

 Jn. Jl. 



2. C. AMERICANA. Michx. (C. podocarpa. Ell. Actaea podocarpa. DC.} 

 Glabrous ; Ivs. triternate, segments ovate, terminal one cuneiform at base, 



3-parted or 3-cleft and incised ; pet. concave, sessile, 2-lobed, nectariferous at 

 base ; ova. 2 5, stiped, obovatr and pod-shaped in fruit ; sds. flat, scaly. 

 Woods, Penn. to N. Car. Stem 3 6f high. Leaflets 24' long, with coarse, 

 unequal, mucronate serratures. Flowers smaller than in C. racemosa, in a 

 long panicle of racemes. Follicles abruptly beaked, 6 8-seeded. 



16. TRAUTVETTERIA. Fisch. and Meyer. 



Named in honor of Trautvetter, a German botanist. 



Sepals 4 5 ; petals ; stamens 00, petaloid ; anthers introrse ; 

 carpels 15 20, membranaceous and indehiscent, 3-carinate, 1 -seeded, 

 tipped with the short, hooked style. ^ Lvs. palmately lobed. 

 T. PALMATA. Fisch. and Meyer. (Cimicifuga. Hook.} 

 St. slender, terete, smooth, branched above ; Ivs. few, rugose and reticulate- 

 veined, palmately 5 9-lobed, upper ones sessile, lower on long petioles, lobes 

 lanceolate, acute, incisely serrate ; fls. cymose. Prairies, la. S. to Tenn. Plant 

 2 5f high. Radical leaves 46' wide, 3 5' long, the petioles twice as long. 

 Stem leaves 2 4, remote. Flowers many. Sepals orbicular, concave, cadu- 

 cous, white. Stamens conspicuous, white. Jl. Aug. 



17. THALICTRUM. 



Said to be from -&aXXco, to be green. 



Calyx colored, of 4 5 roundish, concave, deciduous sepals ; 

 corolla ; filaments 00, compressed, dilated upwards, longer than 

 the calyx ; ovaries numerous (4 15), with sessile stigmas ; achenia 

 awnless, ovoid. % Lvs. ternately divided. Fls. often $ J*. 



1. T. DIOICUM. Early Meadow Rue. 



Very smooth ; Ivs. decompound ; Ifts. roundish, with obtuse lobes ; filaments 



filiform ; fls. 9 tf. Herb 1 2f high, meadows and woods, British Am. to 



Car. Stem striate, jointed. Leaflets paler beneath, with 5 7 rounded lobes 



or teeth. Flowers in long-stalked panicles. Sepals 5, obtuse, purplish. The 



13* 



