H6 SAXIFRAGACE^E. (SAXIFRAGE FAMILY.) 



SUBORDER II. ESCAJLLONIEJE. THE ESCALLOXIA FAMILY. 



9. I TEA, L. ITEA. 



Oalyx 5-clcft, free from the ovary. Petals 5, lanceolate, much longer than 

 the calyx and longer than the 5 stamens. Pod oblong, 2-grooved, 2-celled, 

 tipped with the 2 united styles, 2-parted (septieidal) when mature, several-seeded 



A shrub, with simple alternate and minutely serrate oblong pointed leaves, 

 *- : thout stipules, and white flowers in simple dense racemes. (The Greek name 

 ^i*the Willow.) 



1. I. Virgioftica, L. Wet places, New Jersey and southward, near the 

 coast. June. Shrub 3 - 8 high. 



SUBORDER III. IIYDRAIVGI^^E. THE HYDRANGEA FAMILY. 



IO. HYDRANGEA, Gronov. HYDRANGEA. 



Calyx-tube hemispherical, 8-10-ribbed, coherent with the ovary; the limb 

 4-5-toothed. Petals ovate, valvate in the bud. Stamens 8-10, slender. Pod 

 crowned with the 2 diverging styles, 2-celled below, many-seeded, opening by a 

 he le between the styles. Shrubs, with opposite petioled leaves, no stipules, 

 nnd numerous flowers in compound cymes. The marginal flowers are usually 

 sterile and radiant, consisting merely of a membranaeeous and colored flat an 1 

 dilated calyx, and showy. (Name from vScop, water, and dyyoff, a vase.) 



1. H.'lirborescens, L. (WILD HYDRANGEA.) Glabrous or nearly 

 so ; leaves ovate, rarely heart-shaped, pointed, serrate, green both sides ; cynics 

 flat. Rocky banks, N. Penn., to 1)1. and southward, chiefly along the moun- 

 tains. July. Flowers often all fertile, rarely all radiant, like the Garden 

 Hydrangea. 



li. PHBLADELPHJJS, L. MOCK ORANGE or SYRINGA 



Calyx-tube top-shaped, coherent with the ovary; the limb 4 -5-partcd, spread- 

 ing, persistent, valvate in the bud. Petals rounded or obovate, large, convolute 

 in the bud. Stamens 20-40. Styles 3-5, united below or nearly to the top. 

 S'l-rmas oblong or linear. Pod 3-5-ccllcd, splitting at length into as man) 

 pi'-cps. Seeds very numerous, on thick placenta projecting from the axis, j.en- 

 dHous, with a loose membranaeeous coat prolonged at both ends. Shrubs, 

 with opposite often toothed leaves, no stipules, and solitary or eyniose-elusn-ivd 

 showy white flowers. (An ancient name applied by Limucus to this genus i'oi 

 no particular reason.) 



1. P. inoclorilS, L. Glabrous; leaves ovate or ovate-oblong, pointed, 

 entire or with some spreading teeth; flowers single or few at the ends of the 

 diverging branches, scentless; calyx-lobes acute, scarcely longer than the tube, 



Mountains of Virginia and southward. 



Var. frrsiiUliflorilS. Somewhat pubescent; flowers buyer ; fsilyx-iobus 

 longer and tap'-r pointed Virginia and southward, near the mountains 



