640 CONVOLVULACE^. 



confluent; peduncle shorter than the petiole; cyrae compact; calyx-lobes 

 lanceolate-subulate ; corolla white. — Rich woods, Northern Alabama and 

 Mississippi, and northward. 



H. appendiculatum, Michx. Hirsute, erect, branching (1° high), 

 lowest leaves pinnately divided, with toothed lobes, the others palmately 

 5-lobed ; peduncles longer than the leaves, the cyme loosely flowered ; calyx 

 with short reflexed appendages between the subulate lobes ; corolla blue. — 

 Damp woods, mountains of North Carolina, Tennessee, and northward. 

 May. 



Okder HYDROLEACE^. 

 HYDROLEA, L. 



H. OVata, Nutt. Spiny, closely pubescent ; stem branching near the 

 summit; leaves siiort (I'-l^' long), ovate; flowers crowded at the end of 

 the branches ; calyx-lobes lanceolate, villous, shorter than the corolla ; sta- 

 mens exserted. — Central Alabama (Prof. E. A. Smith), and westward. — 

 Stem 10-2° high. Corolla 1' wide. 



Order POLEMONIACE^. 



PHLOX, L. 



P. Stellaria, Gray. Low (6' high), smooth, branching; leaves linear 

 {V -2' long) ; lobes of the pale blue corolla wedge-shaped, deeply notched. — 

 Near Nashville, Tennessee (Gray). Kentucky (Short), on rocky cliffs. 



Order CONVOLVULACE^. 



IPOMCE3A, L. 



I. trifida, Don., var. Torreyana, Gray. Perennial, smoothish ; pedun- 

 cles longer than the leaves, 3- 10-flowered ; sepals glabrous; capsules as 

 long as the calyx; otherwise like 7. commidata, which it greatly resembles. 

 — Cultivated ground, Apalachicola. Introduced. 



CONVOLVULUS, L. 



Sepals, corolla, ovary, &c. of Ipomoea. Style single; stigmas 2, filiform 

 or subulate, or broader and flat. Capsule 2-9-valved. 



C. Havanensis, Jacq. Stems very long, woody, prostrate, canescent- 

 tomentose ; leaves small, oblong, obtuse, short-petioled ; peduncles stout, 

 single or by pairs, 1-3-flowered ; outer sepals obovate, twice as long as tlie 

 roundish inner ones ; corolla white, sharply 5-lobed ; valves of the capsule 

 6-9. (C. Garbed, CAapm.) — Sandy coast at Cape Florida (Garber). — Stem 

 15° -20° or more long. Leaves 6"- 10" long. Corolla 9" long. 



