18 RANUNCULACE.E. Thaliclnnn. 



Brunswick and Canada, nortli to lat. 67°, west to the hase of the northern Eocky Moun- 

 tains, and south to Carolina, Alabama, &c. ; fl. earl}' spring. 

 T. debile, Buckl. Fascicled roots tuberous : stems weak and slender or filiform, a span to a 

 foot long, 2-4-leaved : leaves mostly twice ternate ; leaflets small (2 to 8 lines long), roundish : 

 panicle loosely few-flowered, slender and racemiform : flowers greenish yellow ; male with 7 

 to 1 1 stamens with slender filaments shorter than the oblong-linear mueronulate anthers ; 

 female with 3 to 9 carpels : stigmas subulate : akenes sessile and subtended by the marcescent 

 calyx, oblong, 6-8-costate. — Am. Journ. Sci. xlv. 175; Gray, PI. Wright, ii. 8; Chapm. 

 Fl. 5; Lecoyer, 1. c. 139. — Woods and moist prairies, Alabama, Buckle >/, N. W. Georgia, 

 Chapman, and E. Texas, Wrujht. Var. TexAnum, Gray (Cat. Coll. Hail, PI. Tex. 3), is a 

 form with firmer stem and thicker smaller leaflets much whitened beneath and but 1 to 2^ 

 lines in breadth ; collected on moist prairies about Houston, Hall. 



T. CoRNUTi, L. Spec. i. 545. It becomes evident that this name ought to subside, as De 

 CandoUe suggested. It rests wholly on the descriptions and figures of Cornuti and of 

 Morison, the latter apparently taken from the former; which, though mentioned as "in 

 Cauadensi solo nascitur," was almost certainly figured and described from a plant of the 

 European T. aquilegifvlium, L. 



T. RUGOSUM, Ait. Kew. ii. 262, said to be a native of North America, and to have been 

 introduced into cultivation in England by Dr. Fothergill in 1774, has hermaphrodite flowers 

 and is a form of T. (/laucitm of Europe. T. discolor, Willd. ace. to Spreug. Pugill. i. 39, is 

 also T. glaucum, and not American. 



6. TIIAUTVETT£:RI A, Fisch. & Meyer. {Prof . Ernst Rudolph Traut- 

 vetter, Russia.) — Perennial herbs ; with palmatifid and reticulate-veiny leaves, 

 the radical ample and long-petioled, the few cauline short-petioled or sessile ; the 

 stem branching at summit and bearing loose corymbose cymes of white flowers, 

 the filaments being white and conspicuous in the manner of Thalictrum, the 

 greenish white sepals falling when they open. — Ind. Sem. Hort. Petrop. 1835, 

 22 ; Torr. & Gray, Fl. i. 37 ; Gray, Gen. III. i. 25, t. 1} Hydrastis, Lam. 111. 

 t. 500, not L. — Three sjjecies, much alike, the third in Japan and Amur ; fi. 

 summer. 



T. palmata, Fisch. & Meyer, 1. c. Two or three feet high, puberulent or glabrous : 

 radical leaves a span to a foot in diameter, 5-1 1-cleft, with lobes irregularly and acutely 

 incised and serrate, or some again 2-3-lol)ed, extremely and conspicuousl}' reticulate-veiny; 

 cauline leaves sessile or the lowest petioled : akenes 2 or 3 lines long, obliquely obovate in 

 outline, tipped with very short style. — Torr. & Gray, 1. c. ; Gray, 1. c. 26, & Man. 40.2 

 Hi/drastis Carol inejisis, Walt. Car. 156. H. Canadensis, Poir. Suppl. iii. 71, not L. Clmici- 

 fuga palmata, Michx. Fl. i. 316 ; Sims, Bot. Mag. 1. 1630. Thtdictrum ranunculinum, Muhl. in 

 Willd. Enum. 585 ; DC. Syst. i. 186. T. palmatum, ii]n-eng. Syst. ii. 674. Actoia palmata, 

 DC. Syst. i. 383. — Moist ground along streamlets, Indiana ^ and E. Kentucky, and along the 

 Alleghanies from Maryland to Georgia. 



T. grandis, Nutt. Not larger: leaves thinner, inconspicuously reticulate-veined; cauline 

 usually petioled : akenes smaller, broader and more rounded at base, tipped with a longer 

 style. — Nutt. in Torr. & Gray, 1. c. 37; Wats. Bot. Calif, ii. 425; Lawson, Rev. Canad. 

 Ranunc. 43. T. palmata, var. occidentalis, Gray, Proc. Am. Acad. viii. 372. Actcea pal- 

 mata, Hook. Fl. Bor.-Am. i. 26. A. grandis, Dietr. Syn. PL iii. 233. — Woods, W. Idaho 

 and Brit. Columbia to Plumas Co., California, Mrs. Austin ; first coll. by Menzies. 



7. AD6NIS, Dill. Pheasant's-eye. {Adonis, the youth loved by Venus, 

 and after his death changed into a flower.) — Caulescent herbs of the Old World; 

 with finely dissected leaves and handsome flowers ; a perennial vernal species 



1 Recent literature : E. Huth, Revision, in Engl. Jabrb. xvi. 286. 



2 Add syn. T. Carnliniensis, A. M. Vail, Mem. Torr. Club, ii. 42. 



.8 Westward to Beardstown, 111., Geyer (a thickish-leaved form, the var. coriacea of Huth,l. c. 288). 



