Thalictrum. i. RANLiNCULACEiE. 14"? 



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. PA.) White Bane-berry. 



Lvs. twice and thrice ternate ; rac. oblong ; pet. truncate ; pedicels ofthefruii 

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

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

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

 nate. Raceme 1 — 3' long, \h' 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. CIMICIFtJGA. 

 Lat. cimex, a h\is,fugo, 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. (Actaea. Linn. Macrotys. Raf.) Black Snake-root. 

 Lvs. 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 monogynous 

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

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

 Jn. Jl. 



2. C. Americana. Michx. (C. podocarpa. £;//. Actaea podocarpa. Z?C.) 

 Glabrous ; Ics. 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— 6f high. Leaflets ^—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 indehiscent, 3-carinate, 1-seeded, 

 tipped with the short, hooked style. — % Lvs. palmately lobed. 

 T. PALMATA. Fisch. and Meyer. (Cimiciftiga. Hnok.) 

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

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

 lanceolate, acute, incisely serrate ; Jls. cvmose. — Prairies, la. S. to Tenn. Plant 

 2— 5f high. Radical leaves 4—6' 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 ^aXXw, 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. tcniatdy divided. F/s. often 9 c^. 



1. T. DioicuM. Earhf Mcad/m Rue. 



Very smooth ; Irs. decnm]xn\ni\ ; Iffs. roundish, witli obtuse lobes ; fihmcTUS 



filiform; p. 9 cT.— Herl) I— 'Jf lii-li, ' m-adows and wootls, British Am. to 



Car. Stem striate, jointed. Lea lifts paler beneath, with 5—7 rounded lobes 



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



13* 



