.146 SAXIFEAGACE^. (SAXIFRAGE FAMILY.) 



Suborder II. £SCALiL,OIVIEJi:. The Escallonia Famil-? 



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;groovcd, 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. ( Tlio Greek name 

 of the Willow.) 



1 . I. Tirg^inica, L. — Wet places, New Jersey and southward, near the 

 coast. June. — Shrub 3° - 8° high. 



Suborder HI. HYDRATVGI]^.<X:. The Hydrangea Family. 



10. HYDRANOEA, 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. — Shrabs, with opposite petiolcd loaves, no stipules, 

 and numerous flowei's in compound cymes. The marginal flowers are usually 

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

 dilated calyx, and showy. (Name from vSap, water, and ayyos, a vase.) 



1. H. ai'boresccns, L. (Wild Hydrangea.) Glabi-ous or nearly 

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

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

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

 Hydrangea. 



11. PMII,A»]E1,PHIJS, L. Mock Obange or Sykinga. 



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

 ing, persistent, valvate in the bud. Petals rounded or obovate, lai-ge, 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 placentiB 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 the 

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



— Mountains of Virginia and southward. 



Var. grandiflorus. Somewliat pubescent ; flowers larger ; calyx-lobes 

 longer and taper-pointed. — Virginia and southward, near the mountains. 



