RUTACEALS. 421 
at our flower shows; pyramids, domes, and clusters are there 
presented, with flowers of every hue, in such profusion as to be 
almost oppressive, and one sighs for a glimpse of native heath as a 
relief from the g picture, though it should be but a hill-side 
covered with Calluna eulgaris. 
Rhododendrons differ from Heaths chiefly in having ten instead 
of five stamens, in the bell-shaped corolla, and in the foliage being 
hard and evergreen. The first of the species introduced seems to 
have been from Asia Minor, whence R. ponticum was obtained ; 
but the species introduced from the Sikhan Himalayas, excel all 
others in beauty, and variety of form and colour. The various 
Species are too well known to justify our entering on further 
description here. 
The Kalmias are evergreen shrubs, with a small five-leaved calyx, 
cup-shaped corolla with angular open limb, and a five-celled and 
many-seeded capsule ; when in blossom their elegant striated petals 
give them a beautiful appearance, but they are said to be-poisonous. 
K. latifolia yields a nectarous juice eagerly sought after by bees 
and wasps, but the honey secreted from the juice is said to be 
Poisonous; and the juice which exudes from the flowers is said to 
have dangerously intoxicating properties. 
RUTACEALS. 
Polypetalous exogens, having monodichlamydeous symmetri- 
cal flowers, axial placente, imbricated calyx and corolla, definite 
_ Stamens, and embryo with little or no albumen. By the older bota- 
 hists the Ruracears were all considered as one order. De Jussieu 
places them among his dicotyledonous hypogens, which have the 
stamens inserted upon the receptacle under the ovary. Dr. Lindley 
es the group into thirteen natural orders, as follows :— 
and 
ent n eceptaes for volatile oils ; succulent indehiscent fruit ; leaves 
» altern: en com artic with the petiolar petals and 
oa ma CLXX. Aurantiacee. 
ce ree “and fi uding oranges, 
‘ ano and shadd — ,equal or double of the latter. Including 
shrubs, bark almost smooth, and filled everywhere with little 
‘ : detect eS ie tor in beilattl: —_ alternate or — ; — 
8 Xi terminal flowers in sabtons or penis es; pel : cg 
vara wi ; stamens twice the number; fruit hard, dry and CLXXI, Amyridacese 
ae Dances trees, with alternate pinnate leaves, without stipules ; Howers in see 
. petals, four or five gl ns free or monodelphous ; double in t CLXXII. Cedrelacer. 
Cas fruit ; senda winged ; numerous. 
wees or with leaves, d iternate, sometimes opposite ; non- i 3 
foie na or a imperfect by abortion ; fruit, CLXXIIT. Meliacez. 
oF capsular ; stame ns monodelphous ; re eigen Hen ae 
