146 SAXIFRAGACE^!. (SAXIFRAGE FAMILY.) 



SUBORDER H ESCAtL-ONIEjE. THE ESCALLONIA FAMILY. 



9. ITEA, L. ITEA. 



Calyx 5-cleft, 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 (septicidal) when mature, several-seeded. 

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

 without stipules, and white flowers in simple dense racemes. (The Greek name 

 of the Willow.) 



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

 coast. June. Shrub 3 - 8 high. 



SUBORDER HI. HYDRANGI^JE. THE HYDRANGEA FAMIIY. 



1C. 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 

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

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

 sterile and radiant, consisting merely of a membranaceous and colored flat and 

 dilated calyx, and showy. (Name from vScap, water, and ayyot, a vase.) 



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

 so ; leaves ovate, rarely heart-shaped, pointed, sen-ate, green both sides ; cymes 

 flat. Rocky banks, N. Penn., Ohio, and southward, chiefly along the moun- 

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

 Hydrangea. 



11. PHH.ADEL.PHUS, L. MOCK ORANGE or SYRINGA. 



Calyx-tube top-shaped, coherent with the ovary ; the limb 4 - 5-parted, 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. 

 Stigmas oblong or linear. Pod 3 - 5-celled, splitting at length into as many 

 pieces. Seeds very numerous, on thick placentse projecting from the axis, pen- 

 dulous, with a loose membranaceous coat prolonged at both ends. Shrubs, 

 with opposite often toothed leaves, no stipules, and solitary or cymose-clustered 

 showy white flowers. (An ancient name applied by Linnaeus to this genus for 

 no particular reason.) 



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

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

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

 Mountains of Virginia and southward. 



Var. graiidiflorilS. Somewhat pubescent ; flowers larger ; calyx-lobes 

 Jonger and taper-pointed. Virginia and southward, near the mountains 



