HO NEW YORK STATE MUSEUM 



In woods and on shaded banks, Maine to Alabama, Saskatchewan and 

 Missouri. Flowering in April and May. 



Fall Meadow Rue 



Thalictrum polygamum Muhlenberg 



Plate 72 



Stems stout, smooth or pubescent but not glandular or waxy, 3 to 10 

 feet high, branching. Leaves three to f our-ternate ; leaflets thickish, light 

 green above and pale beneath, oblong or orbicular with three main apical 

 pointed or blunt lobes; panicle compound, leafy, a foot long or more. 

 Flowers polygamous, white or purplish, usually the pistillate flowers pur- 

 plish and the staminate flowers white; filaments broad, narrowly clavate; 

 anthers oblong, short. Fruiting achenes ovoid, sessile or short-stipulate, 

 six to eight- winged, glabrous or pubescent. 



Marshes, open sunny swamps and low meadows. Newfoundland to 

 Florida, Ontario and Ohio. Flowering from July to September. 



Virgin's Bower; Woodbine; Wild Clematis 



Clematis virginiana Linnaeus 



Figure XVI and Plate 73 



A long vine, climbing over bushes in low woodlands, and along fences 

 and watercourses. Stems somewhat woody below but only the root peren- 

 nial in the north at least. Leaves opposite, glabrous, trifoliate; leaflets 

 broadly ovate, acute at the apex, toothed or lobed, sometimes slightly 

 cordate. Flowers in leafy panicles, white, polygamo-dioecious, two- 

 thirds to \\ inches broad when expanded. Sepals usually four, spreading, 

 petallike; petals none; stamens numerous, spreading; filaments glabrous; 

 pistils numerous. In fruit the styles become an inch long or more, 

 plumose and persistent on the achenes (figure XVI). 



Nova Scotia to Georgia, west to Manitoba and Tennessee. Flowering 

 in midsummer, July to September. 



