22 HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 
R. Maddeni is well worth cultivating, but except in the 
warmer parts of these islands it requires the shelter of a cool 
greenhouse. At Kew it flourishes in the Himalayan House. 
In the herbarium there is a dried specimen with semi-double 
flowers which occurred at Kew in July 1882. One of the leaves 
of this is remarkable in that it is obovate-orbicular, a character 
which appears to occur occasionally in garden forms inclined 
to doubling of their flowers. 
In cultivated examples especially the leaf-scales are fre- 
quently laxer than in wild specimens, and I strongly suspect 
that this condition is brought about by change of environment. 
The calyx, too, seems to be very variable in garden plants of 
this species. 
2. Rhododendron calophyllum, Nutt. in Hook. 
Kew Journ. Bot. v. 362 (1853). 
Leaf rather widely obovate, narrowed to the base, rounded 
to a shortly mucronate obtuse apex, 9.5 cm. long, 4.8 cm. broad, 
glabrous and laxly reticulate above, very glaucous and rather 
laxly lepidote beneath, the scales about 2-3 times their own 
diameter apart and very small, the epidermis very densely 
papillous between the scales with rod-like papillae; midrib a 
little impressed above, prominent beneath and scaly, about 
2.25 mm. wide at the base, gradually tapered to the apex; 
lateral nerves about 6 on each side of the midrib, the lower 
ascending, the upper ones more spreading, slightly raised but 
covered with papillae below; petiole broken off but rather wide 
and finely channelled above, lepidote. Inflorescence 4-5-flowered 
(Nuttall). Calyx not seen, lobes short, sub-equal, obtuse 
(Nuttall). Corolla 7 cm. long, 5-lobed; tube broad, straight 
in the lower part, a little expanded above, 4 cm. long, about 
I cm. in diameter at the base, very densely scaly all over the 
outside ; lobes ovate-rounded, 2.5-3 cm. long, about 2.5 cm. 
broad, densely scaly outside. Stamens probably more than 15 ; 
filaments unequal, the longest reaching to about the middle of 
the corolla lobes, glabrous; anthers about 7 mm. long. Ovary 
and style not seen. Capsule (according to Nuttall) “ cylindric- 
ovate, obtuse, ro-celled.” 
Buutan. On the southern slope of the Oola Mountain, 
at about 6000-7000 ft., Booth. 
The accompanying drawing shows part of the material (one 
eaf and two flowers) upon which the above description is based. 
The specimen is labelled ‘‘ Rhod. calophyllum, Nutt. Bot. Mag., 
t. 5002, Hort. Nutt.’ It agrees with Nuttall’s account of the 
