466 ARBORETUM ET FRUTICETUM BRITANNICUM. 
w 1. D. sca‘pra. The scabrous Deutzia. 
dani fication, Lin. Syst., p.425.; Thunb. Jap., t. 185. ; Don’s Mill., 2. 
. 808. 
Enaravings. Thunb. Jap., t. 24.3 Bot. Reg., t. 1718. ; and our Jig. 836. 
Spec. Char., §c. Leaves ovate, acuminated, serrated, 
scabrous from stellate down. Flowers in compound 
panicles ; peduncles and pedicels scabrous. Calycine 
lobes short and bluntish. (Don’s Mill.) A sar- 
mentose, showy, free-flowering shrub. Japan. 
Height 4 ft. to 6 ft. Introduced in 1822. Flowers 
white; May and June. Fruit brown; ripe in Sep- 
tember. Decaying leaves yellowish brown. Naked 
young wood purplish brown. 
a 2. D. (s.) corymBo'sa. The corymbose-flowered 
Deutzia. 
Identification. R. Br. in Wall. Cat., 3652.; Don's Mill., 2. p. 808. 
Synonymes. D.canéscens Steboldt; Philadélphus corymbdsus Wailj. 
mgravings. Royle Illust., t. 46. fig. 2.; and our jig. 837. 
Spec. Char., §c. Glabrous. Leaves ovate, acuminated, 
cuspidately serrated. Panicles corymbose, trichoto- 
mous. Panicle and outside of calyx dotted. Teeth of 
calyx short and rounded. Teeth of filaments, shorter 
than the anthers. (Don’s Mill.) A sarmentose shrub. 
Nepal, on mountains. Height 3 ft. to 4 ft. Introd. in 
1830. Flowers white, sweet-scented, produced in 
abundance; May and June. Fruit ?. Decaying leaves 
yellowish brown. Naked wood brown. 
836. Dedtzia scabra. 
D. staminea R. Br., Philadélphus stamineus Wall, 
has entire, scabrous, lanceolate leaves, and white sweet- 
scented flowers. A native of Nepal, on high mountains ; 
but not yet introduced. 
D. Brunénia Wall., Leptospérmum scabrum Wall., 
has ovate leaves, and axillary white flowers. It isa 
native of Kamaon, but has not yet been introduced. All these are pro- 
bably only varieties of one form. 
837. D. (s.) corymbosa. 
Genus III. 
ull 
DECUMA'RIA L. Tue Decumaria. Lin. Syst. Dodecdndria 
Monogynia. 
Identification. Lin. Gen., No. 597.; Lam. Ill, t. 403. ; Don’s Mill, 2. p. 808. 
Synonyme. Fors¥thia Walt., not of Vahl. 
Derivation. From decuma, a tenth; in reference to the prevailing number, in some of the parts 
of fructification, being ten. In DeCandolle’s description of the genus, it is stated that the teeth 
and nerves of the calyx, the petals, the stigmas, and the cells of the capsule, are each usually ten. 
Gen. Char. Calyx tube campanulate; limb 7—10-toothed. Petals oblong, 
equal in number to the teeth of the calyx, and alternating with them. Sta- 
mens thrice the number of the petals, disposed in one series. Style 1. 
Capsule ovoid, connate with the calyx. Seeds numerous, oblong. (Don’s Mill. ) 
Leaves simple, opposite, exstipulate, deciduous ; glabrous, entire or toothed 
at the apex. Flowers white, sweet-scented, disposed in terminal corymbs, 
sometimes dicecious. Leaf buds beset with short rufous pili. — Sarmentose 
shrubs, natives of North America. 
