HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON, 41 
13. Rhododendron Nuttallii, Booth in Kew Journ. Bot. 
V. 355 (1853) ; Hooker, Bot. Mag., t. 5146 (1859); FI. des 
Serres, xiii. t. 1326-27 (1858) ; Illustr. Hortic. 1859, t. 208 ; 
C. B. Clarke, in Hook. f. Fl. Brit. Ind. iii. 470 (1882) ; 
Gard. Chron. xx. (1883), 49. Millais, Rhododendrons, 218, 
with photograph (1917). 
A tree Io m. high or a parasitic shrub about 4 m. high and 
then straggling with thick tuberous roots; one-year-old branch- 
lets stout, 6-8 mm. thick, dark purplish-brown when dry, nearly 
glabrous; axillary leaf-buds very small and still dormant at the 
time of flowering; young branchlets with a few of the lower scale- 
leaves persistent, densely lepidote with scales which soon fall off. 
Leaves large, coarsely and strongly bullate-reticulate, elliptic, 
rounded at both ends, shortly and obtusely mucronate at the 
apex, 12-20 cm. long, 6—10 cm. broad, coriaceous, at first densely 
lepidote on the upper surface, soon becoming glabrous, densely 
lepidote below, the scales about 14-2 times their own diameter 
apart, rather small, unequal in size and more or less rusty- 
brown when dry, the epidermis between the scales laxly papillous; 
midrib raised on the upper surface especially towards the base, 
very prominent below, sparingly lepidote, about 3-4 mm. broad 
at the base, gradually tapered to the apex ; lateral nerves 12-16 
on each side of the midrib, slightly elevated in a depression 
above, very prominent beneath, diverging from the midrib at an 
angle of about 45°, repeatedly looped and flexuous towards the 
margin; secondary nerves lax and distinct below; petioles 
about 2 cm. long, 3-4 mm. thick, compressed-terete, convex 
and not grooved on the upper side, rather sparingly lepidote 
when mature. Inflorescence about 5-flowered (sometimes up to 
t1-flowered, Hooker, l.c.), the pedicels arising from approxi- 
mately the same level; flower-bearing buds very large, broadly 
ovoid, about 5 cm. long and 3.5 cm. through, the scales glaucous 
outside, very thick and leathery, and fringed in the upper 
part with soft short hairs, appressed silky villous towards the 
-apex within; pedicels nodding, about 3 cm. long, reaching 
4-5 cm. in fruit, lepidote, about 4mm. thick. Calyx 1.5-2.5 cm. 
long, 5-lobed nearly to the base, the lobes chartaceous, oblong- 
elliptic, rounded at the apex, usually about 1 cm. broad, glabrous 
outside, sometimes with a few short weak hairs on the margin. 
Corolla 10 cm. long or more, widely campanulate in the upper 
part, with a limb about 15 cm. across, 5-lobed, white suffused 
with yellow within the tube, the lobes slightly tinged pink ; 
tube lepidote mainly towards the base outside; lobes scarcely 
lepidote, rounded. Stamens 10, crowded together in the middle 
of the flower, about as long as the corolla tube; filaments 
