226 NEW YORK STATE MUSEUM 



The form illustrated here is the purple-flowered form which is not so com- 

 mon as the greenish purple-flowered form. 



The Purple Milkweed (Asclepias purpurascens Linnaeus) , 

 rather rare in this State, has smooth or puberulent stems, ovate, elliptic 

 or oblong leaves, smooth above and finely pubescent beneath; flowers deep 

 purple ; corona hoods oblong or ovate and nearly twice as long as the anthers, 

 the horns broad at the base, slender and incurved at the apex. The fol- 

 licles are downy and without the soft processes of the Common Milkweed. 



Morning-glory Family 



Convolvulaceae 

 Upright or Low Bindweed 



Convolvulus spithamaeus Linnaeus 



Plate i64b 



Stems erect or ascending, sometimes the tip of the stem feebly twining, 

 5 to 15 inches high, hairy or in late summer becoming nearly smooth. 

 Leaves alternate, oval, short petioled or the upper leaves sessile, usually 

 blunt or but slightly pointed at the apex, somewhat heart-shaped or rounded 

 at the base, i to 2 inches long, one-half to i^ inches wide. Flowers white, 

 open funnelform, about 2 inches long, solitary on long stalks from the axils 

 , of the middle or lower leaves; the calyx inclosed by two oval bracts. 



In dry, sandy or rocky fields, banks and open woods, Nova Scotia to 

 Manitoba, south to Florida and Kentucky. Flowering in June and July. 

 Rarely seen in sections with rich loamy or clayey soils. 



Hedge or Great Bindweed 



Convolvulus septum Linnaeus 



Plate 176 



Stems high, twining or trailing, often several feet long, smooth or 

 sometimes slightly hairy. Leaves triangular in outline, slender petioled, 

 hastate at the base, pointed at the apex, 2 to 5 inches long, the basal lobes 

 divergent, usually pointed or toothed. Flowers pink with white stripes or 

 entirely white, funnelform, 2 to 3 inches long, with a spreading, slightly 



