Descriptive Flora 



165 



flowers that close with the heat of day. Leaves simple, alternate. 

 Blades mostly strongly 3-lobed, the shorter lateral lobes usually 

 again 2-lobed. Corolla resembling the horn of an old fashioned 

 phonograph, about l 1 /^' long, purple with darker purple throat. 

 3 to 10 at the end of slender axillary stalks. Stamens 5, unequal. 

 Pod 4 to 6-seeded, hairy, about the size of a pea. Widespread. 

 Common in all vacant lots and uncultivated fields, and a weed 

 in the average flower garden. 



Ipomoea lindJheimeri A. Gray. Wild Morning Glory. 



(Pharbitis lindheimeri [A. Gray] Small.) 



Vines similar to the preceding species in general appearance 

 and habit. Flowers much larger, light blue, solitary on slender 

 peduncles, the corolla being 2 to 3" long and nearly as broad. 

 Stems retorsely pubescent. Leaf-blades 2 to 4 inches in 

 diameter, rounded in outline, 5-parted, the 3 interior lobes ovate 

 with a much contracted base. Sepals bristly-hairy at the base. 

 April to July. On rich ledges and shaded tops of limestone 

 hills. 



Convolvulus Tiermannioides A. Gray. Bindweed. 



Vines that twine and trail extensively over the ground or 

 low shrubbery and weeds, and have white flowers usually with 

 red centers similar to a morning glory only smaller. Leaves 

 simple, alternate. Blades usually oblong or oblong-lanceolate, 

 1 to 2y 2 " long, with prominent basal lobes, wavy and irregularly 

 toothed margins. Petioles nearly as long as the blades. Flowers 

 y 2 to 1" across, flaring bell-shaped, solitary on peduncles shorter 

 than the subtending leaves. Calyx consists of 5 overlapping 

 sepals with a projection on each side at base. March to late 

 fall. Widespread. 



Evolvulus sericeus Swartz. Silky Evolvulus. 



Dwarf Morning Glory. 

 Low plants with few, slender, short, somewhat zigzag, 

 spreading branches (2 to 12" long) and small white flowers re- 



