450 SAXIFRAGACEAE (SAXIFRAGE FAMILY ^ 



11. DECUMARIA L. 



Flowers all fertile. Calyx-tube turbinate, 7-10-toothed. Petals oblong. 

 Stamens 20-30. Styles united into one, persistent. Stigma thick, 7-10-rayed. 

 Capsule 10-15-ribbed, 7-10-celled, many-seeded, bursting at the sides, the thin 

 partitions at length separating into numerous chaffy scales. Smooth climbing 

 shrub, with ovate or oblong entire or serrate leaves, no stipules, and numerous 

 fragrant white flowers in compound terminal cymes. (Name said to be derived 

 from decumanus, of the tenth part, referring to the often 10-merous flowers. ) 



1. D. barbara L. Leaves shining, sometimes pubescent ; capsule with the 

 persistent style and stigma urn-shaped, pendulous. Banks of streams, Dismal 

 Swamp, Va., to Fla. and La. 



12. HYDRANGEA [Gronov.] L. 



Calyx-tube hemispherical, 8-10-ribbed, adherent to the ovary ; the limb 4-5- 

 toothed. Petals ovate, valvate in the bud. Stamens 8-10, slender. Cap- 

 sule 16-ribbed, 2-celled below, many-seeded, opening by a hole between the 

 2-4 diverging styles. Shrubs, with opposite petioled exstipulate leaves. The 

 marginal flowers of the compound cymes usually sterile and radiant, consisting 

 merely of a showy membranaceous and colored flat and dilated calyx. (Name 

 from v5wp, water, and dyyeTov, a vessel, from the shape of the capsule. ) 



1. H. arbor6scens L. (WILD H.) Glabrous or nearly so, 3-25 dm. high ; 

 leaves ovate, rarely heart-shaped, pointed, serrate, usually somewhat paler green 

 beneath ; cymes flat ; flowers often all fertile, rarely all radiant. Rocky banks, 

 s. N. Y. to Fla., w. to la. and Mo. 



2. H. cinerea Small. Branches cinereous-puberulent ; leaves densely tomen- 

 tose, much paler beneath. (H. radiata Man. ed. 6, not Walt. ) S. C. and Ga. 

 to Tenn, and Mo. 



13. fTEA [Gronov.] L. 



Calyx 5-cleft, free from the ovary or nearly so. Petals 5, lanceolate, much 

 longer than the calyx, and longer than the 6 stamens. Capsule oblong, 2- 

 grooved, 2-celled, tipped with the 2 united styles, 2-parted (septicidal) when 

 mature, several -seeded. Shrubs, with simple alternate petioled exstipulate 

 leaves, and small white racemose flowers in simple racemes. (Greek name of 

 the Willow.) 



1. I. virgfnica L. Leaves deciduous, oblong, pointed, minutely serrate. - 

 Swamps, chiefly on the coastal plain, N. J. and Pa. to Fla. and Tex. ; inland in 

 Miss, basin to 111. and Mo. May, June. 



14. RIBES L. CURRANT. GOOSEBERRY 



Calyx 5-lobed, often colored ; the tube adherent to the ovary. Petals 5, 

 inserted in the throat of the calyx, small. Stamens 6, alternate with the petals, 

 i )\ary 1-celled, with two parietal placentae and 2 distinct or united styles. 

 Berry crowned with the shriveled remains of the calyx. Low sometimes 

 prickly shrubs, with alternate palmately lobed leaves, which are plaited in tire 

 bud (except in one species), often fascicled on the branches ; the small llowrrs 

 from the same clusters, or from separate lateral buds. (Kibes, the Arabic 

 name.) 



* Peduncles l-4(raroly 5) -flowered, stems mostly bearing spines at the base of tin' le:ifst:ilks or 

 clusters of leaves, and often with scattered bristly prickles. (Our species are indiscriminately 

 called WILD < HM.SKIU.KKY.) 



Calyx-lobes decidedly shorter than the tube; berries apt to be prickly. 



Leaves densely soft-pubescent 1. R. Cynosibati. 



Leaves only sparinplv pilose . . . . . . (1) R. Oi/iioxtxiti. v. t/lnhr< 



Calyx tube narrowly cylindric '-'. A'. // tini,nx<-. 



