HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 31 
towards the margin, the junctions of the nerves forming a 
distinct coarsely crenate intramarginal nerve ; transverse nerves 
faint and inconspicuous ; petioles terete, about 3.5 mm. thick, 
dark purple, covered with small scales and at length punctate 
with their impressions. Inflorescence 3—4-flowered, the pedicels 
arising from about the same level; scars of the fallen bud-scales 
very dense, transversely linear, straw-coloured ; pedicels stout, 
2 cm. long, about 4 mm. thick, densely covered with dark red 
rather fleshy scales. Calyx 1-1.5 cm. long, tubular and slightly 
scaly outside at the base, the lobes rounded, glabrous outside, 
very slightly or not at all ciliate on the margins. Corolla white 
(Henry), rather widely funnel-shaped, gradually widened from 
the base upwards, rather densely scaly outside the tube and 
up the back of the lobes; tube 7.5-8 cm. long, about I cm. in 
diameter at the base, 7 cm. broad at the top when flattened out ; 
lobes 5, shallowly and widely emarginate, about 2.5 cm. long 
and 3.5 cm. broad. Stamens 15, much shorter than the corolla 
tube; filaments rather densely pubescent in the lower two- 
thirds ; anthers large, 1.2-1.3 cm. long. Ovary 5-celled, 1.5 cm. 
long, gradually narrowed into the style, densely covered with 
reddish-brown scales ; style slightly exceeding the corolla tube, 
8.5-9 cm. long, scaly for about the lower 4 of its length, glabrous 
above, stout, crowned by a very large lobulate disk-like stigma 
about 7 mm. in diameter. Capsule not seen. 
SOUTH YUNNAN. South of the Red River from Mengtze ; 
“only one specimen brought by a native, shrub ro ft., fls. white,” 
7th July, A. Henry, 13666 (Herb. Kew; photograph in Herb. 
Edinb.). 
I have given a new and more detailed description of this 
truly magnificent species because there is so far only one dried 
specimen in existence. As it flowers in July in S. Yunnan, it 
would probably also flower late in cultivation. 
8. Rhododendron megacalyx, Balf. f. et Ward in Notes, 
Roy. Bot. Gard. Edinb. ix. 246 (1916). 
A bushy tree of 3-5 m.; one-year-old branchlets dark 
brownish-purple, terete, rather laxly marked with the remains 
of small scales; axillary leaf-buds already elongating at the 
time of flowering, then about 1.5 cm. long, their scales slightly 
lepidote on the back but not ciliate. Leaves fairly large, elliptic 
or slightly obovate-elliptic, slightly narrowed to the rounded 
base, rounded to a sunken tip at the apex, 11-14.5 cm. long, 
4-7 cm. broad, rather rigidly coriaceous, glabrous and dull 
above when mature (densely lepidote above when young), 
glaucous and densely lepidote below, the scales small and much 
