THALicTRnM. RANUNCULACEiE. 37 



2-4 inches long, thin, coarsely serrate and incised ; the serratures mucro- 

 nate. Panicle (in fruit) nearly 2 feet long. Flowers smaller than in C ra- 

 ceinosa, on short bracteate pedicels ; the upper ones often with but 2 or 3 

 ovaries. Sepals 5. !'?etals resenii)ling those of C. foctida, l)ut smaller, and 

 more distinctly 2-lob'>d. Follicles very obtuse, scarcely beaked ; the j)ersis- 

 tent slender style siibterminal. Seeds 6-8, oblong, with long light-colored 

 chaff. 



17. TRAUTVFiTTERIA. Fisch. f Meyer, ind. sem. St. Petersb. 



1835, p. 22. 



Sepals 4-5. Pf;tals or sterile filaments none. Stamens numerous : an- 

 thers introrse. Carpels 15-20, membranaceous and indchiscent, 3-carinate, 

 l-seeded, tipj)ed vnth the very short hooked style. Seed erect. — Perennial 

 herbs. Leaves palmately lobed. Stems simple or branching above. In- 

 florescence cyraose. 



1. T. pahnata (Fisch. &. Meyer) : leaves slightly coriaceous, with 

 conspicuous reticulated veins ; cvme mostly compound. — Cimicifuga pal- 

 mata, Mirh.v. ! fi. 1. p. 316; Pursh, Ji. 2. p. 373 ; Ell. sk. 2. p. 17. Actsea 

 pahnata, DC. fiyst. 1. p. 383 ; Bat. mag. t. 1630. Thalictrum ranunculinum, 

 Muhl. in Willd. enuni.7 Hydrastis, Lam. ill. t. 500; Pair, suppl. 3. 

 p.l\. 



a. lobes of t.he leaves incisely lobed and serrate. 



/?. lobes of the upper leaves lanceolate, serrulate. 



Along stre ams and mountain rivulets. North Carolina! to Tennessee! P. 

 Kentucky, — Short! July— Aug. — Stem 2-3 feet high. Leaves 2-3, large, 

 5-9-lobed (t'le lowest on a long petiole), with smaller sessile ones subtending 

 the branches of the cyme. Cyme fastigiate, nearly simple or much branched, 

 diehotomously corymbose, loosely flowered: pedicels ebracteate. Sepals or- 

 bicular, concave (the veins arranged after the same manner as in the leaves). 

 Achenia utriculate, small, gibbous on the back, carinate, als.o with 2 lateral 

 ribs. Seed very small. 



2. T. grandis (Nutt. ! mss.): "leaves membranaceous, the veins scarcely 

 prominent; cyme nearly simple. — Cimicifuga palraata, Hook. Ji. Bor.-Am. 1. 

 p. 26. 



" Shady i 70ods of the Oregon. A taller and larger plant than the preced- 

 ing, with th inner, more acuminate, sharply and deeply toothed leaves. The 

 flowers are also larger." Nuit. — Perhaps scarcely distinct: the more mem- 

 branaceous leaves may be owing to the shady situations. 



18. THALICTRUM. Linn.; DC. syst. 1. p. 168. 



Sepals 4, rarely 5. Petals none. Stamens numerous : anthcxs innate. 

 Carpels (ichenia) 4-15, pointed with the style or stigma, sulcate or ribbed, 

 sometime s inflated. Seed suspended. — Perennial herbs. Leaves 2-3-ter- 

 nately di /ided. Flowers corymbose or paniculate, often dioGcious or polyga- 

 mous, gr aenish, white, or yellow. 



* Carpels inflated or stipitate : sepals caducous. 



/ 



1. T. clavalum (DC): floAvers perfect (moncEcious, DC); filaments 



clavate • anthers elliptical, pointless ; carpels compressed, not striate, stipi- 



