


ADJACENT TO HORTICULTURAL HALL. 85 

petals, the edges of which turn slightly inwards in the bud; stamens 8 or 10, 
the alternate ones longer and in some species with a tooth on either side near 
the top of the flat filaments. 
Deutzia crenata, Siebo/d and Zuccarin?. Well known in gardens; 
younger parts and leaves rough with short hairs ; leaves pale, oblong or ovate, 
minutely and bluntly toothed ; filaments widening upwards and toothed near 
the summit; usually called D. scaéra. It has produced varieties under culti- 
vation. 
Deutzia Fortunii, —— ? “is a new introduction, with dark-green foliage 
and a large white bloom.” ° 
Deutzia gracilis, Stebo/d and Zuccarini. Is only 2 feet high; with lance- 
shaped, dark-green, sharply-toothed leaves, and small white flowers with 
toothed filaments, 
Deutzia scabra, 7hunderg. Has roughish, finely and sharply toothed 
leaves; flowers white, drooping, and filaments tapering upwards without teeth, 
Hydrangea. Shrubs with flowers in flat-topped clusters, of 2 kinds; the 
marginal ones with neither pistils nor stamens, and calyx enlarged and colored 
to resemble a corolla; central ones inconspicuous, but with 8 to Io stamens 
and 2 to § diverging styles; fruit opening on the top between the styles. 
Hydrangea arborescens, Zinn@us. Small native shrub, with ovate, 
heart-shaped, somewhat pointed, toothed green leaves; flowers in a flat-topped 
cluster, of which the outer row may or may not be conspicuously enlarged. 
Hydrangea Hortensis, De Candol/e. From China and Japan. Common 
in cultivation. The variety Otaksa, recently introduced from Japan, is said by 
Hoopes “to have corymbs of flowers of very large size, deep rose-color; 
foliage larger than the species. Growth vigorous and attractive.” 

Hydrangea deutziafolia, ? Also known as H. paniculata. ‘The 
finest shrub of recent introduction, and especially beautiful. Flowers in very 
large panicles, pure white; and the plant is entirely hardy.” 
Hydrangea quercifolia, Bartram. OAK-LEAVED HYDRANGEA. Native 
of the Southern States, but hardy with us; distinguished by its large oak-like 
leaves and its conspicuous and numerous marginal flowers. 
Hydrangea radiata, Walter. (Hydrangea nivea, Michaux.) With ovate, 
heart-shaped leaves, pointed, and white woolly on the under surface, but green 
above; enlarged marginal flowers not numerous. Native from Virginia south, 
Itea. Native shrub, with alternate, pinnately veined, oblong leaves; 5-cleft 
calyx (almost free from the 2-cefled ovary), in the bottom of which the 5 
stamens and 5 lanceolate petals are inserted. Our species is 
Itea Virginica, Zinnzus. With handsome, simple, elongated clusters of 
small white flowers on the ends of the short lateral branches. 
Philadelphus. Mock-ORANGE, SYRINGA. Calyx and 3- to §-celled ovary 
united, though the lobes of the former are not prolonged beyond the top of the 

