SAXIFUAGACIC.E. (SAXIFKAGK lAMILY.) 155 



Streams, among the mountains, Georgia, and nortlnvurd. April and May. y, — 

 Stems 4' -6' long. 



9. ITEA, L. 

 Calyx campanulatc, 5-cleft, free from the ovary. Petals 5, lanceolate. Sta- 

 mens 5, sliortcr than the petals. Styles 2, united. Capsule 2-ccllcd, 2-furro\ved, 

 septicidally 2-valved, several-seeded. — A shrub with simple oblong or oval ser- 

 rate pulK'sccnt leaves, and close mostly drooping racemes of white fragrant flow- 

 ers terminating the branches. ^ 



1. I. Virginica, L. — Swamps, Florida to Mississippi, and northward. 

 May and June. — ■ Slirub 4° - 10° high. 



10. HYDRANGEA, Gronov. 



Calvx-tubc hemispherical, 8-10-ribbed, coherent with the ovary; the limb 

 4 - ."i-tootlied, persistent. Petals ovate, valvate in the bud. Stamens 8- 10, fili- 

 form. Capsule crowned with the 2 diverging styles, 2-celled, many-seeded, open- 

 ing at the apex between the styles. — Erect shrubs, with opposite petioled leaves, 

 without stipules, and whitish or purplish flowers, in ample compound cymes ; 

 the marginal flowers mostly sterile, with the calyx-lobes enlarged and showy. 



1 . H. arborescens, L. Smoothish ; leaves ovate, acute or acuminate, 

 serrate, mostly rounded or cordate at the base; cymes crowded, flat-topped; 

 8t€rile flowers few or none. (H. vulgaris, Michx. H. cordata, Pursh.) — Banks 

 of streams, Florida to Mississippi, and northward. June and July. — Shnib 

 4° - 8° high. Leaves 3' - 6' long. 



2. H. radiata, Walt. Leaves ovate, acuminate, serrate, mostly cordate at 

 the base, white-tomentose beneath; cymes flat-topped; sterile flowers few. — 

 Rich soil, Georgia, Carolina, and Tennessee. May and June. — Shrub 4°-8° 

 high. 



3. H. quercifolia, Bartram. Young branches and leaves densely to- 

 mentose; leaves oval, sharply 5-lobed, serrate; Cannes clustered, forming a close 

 oblong panicle ; sterile flowers large, numerous. — Shady banks, Florida, Geor- 

 gia, and westward. May and June. — Slirub 3° - 6° high. Leaves 4' - 8' long. 

 Sterile flowers whitish, turning purple. 



11. DECUMARIA, L. 



Flowers all fertile. Calyx-tube turbinate, coherent with the ovary, 7-10- 

 toothed. Petals valvate in the bud, oblong. Stamens 21-30. Styles united, 

 persistent. Stigma thick, 7-10-rayed. Capsule 10-1.5-ribbed, 7-10-celled, 

 bursting at the sides ; the thin partitions at length separating obliquely into nu- 

 merous chaff'y scales. Seeds numerous, suspended. — A smooth climbing 

 shrub, with opposite ovate or oblong entire or serrate leaves, and numerous odor- 

 ous white flowers in compound terminal cymes. 



1. D. barbara, L. — Banks of streams, Florida to North Carolina, and 

 westward. May and June. — Leaves shining, sometimes pubescent. Capsule,, 

 with the persistent style and stigma, um-sbaped, pendulous. 



