Thalictrum. 1. RAJMUNCULACE^. lYf 



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

 Petioles 4 — 7' 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 tcrnate ; ra^. oblong ; pet. truncate ; pedicels of the fruit 

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

 Can. to Ga., much like the last in foliage. ' Plant IJ— 2f. high, bearing 2 com- 

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

 nate. Raceme 1 — 3' long, U' thick, the pedicels J' 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 Irom the last. May. 

 15. CIMICIPUGA. 



Lat. cimex, a bug,/«g'0, to drive away ; alluding to its offensive odor. 



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

 anthers introrse ; follicles 1 — 8, oblong, many-seeded. — % Lvs. ter- 

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



1. C. RACEMosA. Ell. (Actasa. Linn. Macrotys. Raf.) Black Snake-root. 

 Las. ternately decompound ; Ifts. ovate-oblong, incisely serrate ; rac. 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 monog}Taous 

 flowers. Petals 4 — G, small. Stamens about lOO to each flower, giving the 

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

 Jn. Jl. 



2. C. Americana. Michx. (C. podocarpa. £;ZZ. Acteea podocarpa. Z?C.) 

 Glabrous ; lvs. 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, obovate and pod-shaped in fruit; sds. flat, scaly. — 

 Woods, Penn. to N. Car. Stem 3— Of high. Leaflets 2—4' 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 indeliiscent, 3-carinate, 1-seeded, 

 tipped with the short, hooked style. — %■ Lvs. palmateli/ lobed. 

 T. PALMATA. Fisch. and Meyer. (Cimicifiiga. Hook.) 

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

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

 lanceolate, acute^ incisely serrate ; fs. cymose. — Prairies, la. S. to Tenn. Plant 

 2— 5f high. Radical leaves 4— G' 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 SaWa, 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. icrnately divided. Fls. often $ c?. 



1. T. DioicuM. Early Meadow Rue. 



Verv smooth ; lvs. decompound ; Ifls. roundish, with obtuse lobes ; filaments 



filiform; Jis. Q (j^.— Herb I— 2f higl;," 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 



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