RANUNCULACEAE. 



Vol. II. 



6. Thalictrum dasycarpum Fisch. & 



Lall. Purplish or Tall Meadow- 



Rue. Fig. 1937. 



Thalictrum dasycarpum Fisch. & Lall. Ind. Sem, 

 Hort. Petrop. 8; 72. 1842. 



Stout, erect, purplish, 4°-7° high, leafy, 

 branching above, pubescent or glabrous ; leaves 

 3-4-ternate, those of the stem sessile or short- 

 petioled; leaflets oblong or obovate, dark green 

 above, commonly somewhat pubescent, but 

 neither waxy nor glandular beneath, and with 

 3 main apical pointed lobes ; panicle compound, 

 leafy, 1° long or more; flowers dioecious or 

 perhaps sometimes polygamous ; filaments 

 narrow, slightly widened above ; anthers linear 

 or linear-oblong, cuspidate ; achenes ovoid, 

 glabrous or pubescent, short-stipitate, with 6-8 

 longitudinal wings. 



In copses and woodlands. New Jersey to North 

 Dakota, Saskatchewan, Nebraska and Arizona. 

 Illustrated in our first edition as T. purpurascens 

 L. June-Aug. 



7. Thalictrum venulosumTrelease. Veiny 

 Meadow-Rue. Fig. 1938. 



TJialictrum veniilosnm Trelease, Proc, Bost. Soc. Nat. 



Hist. 23 : 302. 1886. 

 T. compcstre Greene. Erythea 4: 123. 1896. 

 T, confine Fernald. Rhodora 2 : 222. iQoo. 



Glabrous, pale green and glaucous, stem erect, 

 or assurgent at the base, 6-2° tall. Leaves 

 3-4-ternate, long-petioled ; leaflets firm, obovate 

 or suborbicular, rounded at the apex, cuneate, 

 obtuse or subcordate at the base, 4"-%" long, 

 3-5-lobed, the lower surface rather prominently 

 nigose-veined ; panicle narrow, its branches 

 nearly erect; flowers dioecious; stamens 8-20; 

 filaments slender; anthers linear, slender-pointed; 

 achenes ovoid, nearly sessile, tapering into a 

 short beak, thick-walled, slightly 2-edged. 



In gravelly and rocky soil. Nova Scotia to Maine, 

 New York, Manitoba, Washington, South Dakota and 

 Colorado. Has been confused with T, occidentale 

 A, Gray. M'ay-July, 



8. Thalictrum dioicum L. Early Meadow- 

 Rue. Fig. 1939. 



Thalictrum dioicum L. Sp. PI. 545. 1753. 



Glabrous, erect, i°-2° high, slender, leafy. 

 Roots not yellow ; leaves 3-4-ternate ; leaflets 

 thin, pale beneath, orbicular or broader, often 

 cordate and the terminal one somewhat cuneate, 

 S-9-lobed ; flowers dioecious, greenish, drooping 

 or spreading; panicle elongated, of numerous 

 lateral corymbs or umbels; filaments longer than 

 the sepals ; anthers linear, blunt, longer than the 

 filaments ; stigma elongated ; achenes ovoid, ses- 

 sile or minutely stipitate, strongly ribbed, much 

 longer than the stvle. 



In woods, Maine to Alabama, Saskatchewan and 

 Missouri. Ascends to 4500 ft. in North Carolina. 

 Poor-man's rhubarb. Shining grass. Quicksilver- 

 weed. Feathered columbine. April-May. Recorded 

 from Labrador. 



