514 MINNESOTA BOTANICAL STUDIES. 
in a long, loose, leafy panicle, polygamo-dicecious; filaments 
narrow, anthers rather long, taper pointed: akenes slightly 
stalked, ovoid, glabrous or pubescent with 6 to 8 longitudinal 
wings; style slender, persistent; stigma long and narrow, 
Canada to Florida, west to the Rockies. June, Aug. Intro- 
duced 1883. 
Var. ceriferum Austin, Gray Man. 5 ed. 39. 1867. 
Je eevolmameuae. 1. C. 140. ¢..35.f> T« 
This is a variety with waxy glands. 
T. polygamum Mun. Cat. 54. 1813. 
T.. corynellum DC. Syst. 1: 172. 1818. 
T. Cornuti var 8 Hook. |. c. 3. 
ie Coranit Torr. & GRAY, Fl. 2:38. 1898. 
T. leucostemon Kocu. & Baucus, Ind. Sem. Hort. Berol. 
App. 13.) 1954. 
Erect, 3to8 or more ft. high, branching and leafy, smooth or 
pubescent, not glandular: leaves 3-4 times ternate or terminally 
pinnate; leaflets oblong to orbicular, bases variable, 3-5 apical 
lobes: flowers in a long, leafy panicle, polygamo-dioecious ; 
sepals white; filaments broadened when young; anthers short: 
akenes ovoid, stipitate, 6-8-winged or ribbed; with stigmas as 
long, which become curled. July-August. Low or wet 
grounds, Canada to Florida, west to Ohio. Introduced 1881. 
Izec. 2.7. 12. T. pubescens Pursh, Fl..2: 388, 6Gieuee 
probably a very pubescent form of this and might be called 
var. pubescens. 
Var. macrostylum Rosinson, Syn. Fl. 1: 17. 1895. 
T. Cornutt var. macrostylum SHUTTLE. in Dist. PI. 
Rugel, 1845-6. 
T. Cornuti var. monostyla Bot. ZEIT. 3: 218,219. 1845. 
T. macrostylum SMALL & HELLER, Mem. Torr. Club, 
go°S.> “EOe2. 
Slender; leaflets small, nearly entire: fertile flowers less 
numerous and in a more spreading panicle: akenes in a small, 
dense, spherical head. Mountains of western North Carolina 
to Georgia. 
T. aquilegifolium Linn. Sp. Pl. 547. 1753. 
Stem large, hollow, 1 to 3 feet high, glaucous: leaves once or 
twice 3-5-parted; leaflets stalked or the lateral ones nearly ses- 
sile, slightly lobed or obtusely toothed, smooth, suborbicular: 
