CHAP. LXIX. ERICA CEH. RHODODE’/NDRON. 114] 
Stamens much exserted, (Don’s Mill., iii. p.847.) A deciduous shrub, a 
native of North America, from Canada to Georgia, on the sides of hills; 
where it grows from 3 ft. to 4ft. high, flowering trom April to June. In- 
troduced in 1734, It is the parent of numerous varieties, and, in con- 
junction with the preceding species, of numerous hybrids. 
Varieties and Hybrids. 
% R. 2. 1 cocctneum D. Don; Azalea n. coccinea Sims, Bot. Mag.. t. 180. ; 
has the flowers scarlet, and the leaves lanceolate. It is a native of 
Georgia, near Savannah. 
2R. n. 2 rutilans D. Don; A. n. ritilans Ait. Hort. Kew., p.319.; A. 
periclymendides rutilans Pursh Fl. Amer. Sept., i. p. 152.—The flow- 
ers are deep red. Calyxes minute. 
% R.n. 3 carneum D. Don; A. n. carnea Ait., 1. ¢., Ker Bot. Reg., t. 
120.; A. p. carnea Pursh, 1, c.—The corollas are pale red, having the 
tube red at the base, and the calyx foliaceous. 
R. x. 4 album D. Don; A. n. alba Ait., |. c.; A. p. alba Pursh ; has the 
flowers white, and the calyx middle-sized. 
% R. x. 5 papiliondceum D. Don, A. p. papilionacea Pursh, has reddish 
flowers, with the lower segment white, and the calyx foliaceous. 
R. 2. 6 partitum D. Don, A. p. partita Pursh.—The flowers are pale 
red, 5-parted, even to the base. 
% R.n. 7 polyindrum D. Don; A. p. polyandra Pursh, |. c.; has flowers 
R. x. 8 Govenianum D. Don in 
of a rosecolour, short. Stamens 10—20. It is found near Phila- 
delphia. 
Brit, Fl.-Gard., iti. t. 263., and 
our fig. 944., has the branches 
tomentosely downy. Leaves -—> 
evergreen or deciduous, oblong, ~= 
acute, downy while young, but 
glabrous in the adult state, and 
recurved at the apex. Tube of 
corolla a little shorter than the 
segments. Flowers delicate 
light purple, disposed in terminal 
racemose cerymbs. It is a hy- 
brid raised from the seed of A. 
nudiflora impregnated by the 
pollen of a hybrid raised be- 
tween R. ponticum and R. catawbiénse. This variety Mr. G. Don 
considers as proving “ clearly that Rhododéndron and Azalea are 
not generically distinct ;” (Don’s Mill., iii. p. 387.) which we believe 
to be the case, according to the canons for distinguishing genera, at 
present in use among botanists: but, as before observed, we have 
kept the genus Azalea distinct, for the sake of expediency, inde- 
pendently altogether of our own private opinion, that genera ought 
to be established on a totality of characters and properties; not 
taking merely the form and organisation of the parts of fructifi- 
cation. 

ge R. xn. 9 ribrum Lodd. Bot. Cab., t. 51., has the flowers red. 
aw R. 2. 10 extmium D. Don was raised, in 1829, from seeds of 2. nudiflorum 
coccineum majus, to which pollen of Rhododéndron arboreum had 
been applied. It resembles its female parent, having very little affinity 
with &. arboreum, except in its evergreen leaves and decandrous 
flowers. 
The varieties and hybrids assigned to A. nudiflora in Loddiges’s Catalogue 
for 1836 are the following : — 
4p 4 
