20 HuTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 
margins of the leaves veut all setose pubescent ; 
Khasia Hills species 36. formosum. 
||| aes yellow or gre sa 
ature leaves densely oeides « on the upper surface, green 
bate between the scales; inflorescence several-flowere 
S.W. Burmese species 37. burmanicum. 
Mature leaves more or less lepidote on the upper surface, 
eS below between the scales; inflorescence often 
1-flowered unnan species. 38. pac oe 
§§ Leaves linear, acute, ey less than 1.5 cm. broad, 5 
long, the scales below about their own diameter cer: 
Assam (Khasia Hills) species : : 39. tteaphyllum. 
1. Rhododendron Maddeni, Hook. f., Rhod. Sikkim Himal. 
p. 19, t. 18 (1851) ; Journ: Hort. ‘Soc. Lond. vil. 79, 95 
(1852) ; Hook. Bot. Mag. t. 4805 (1854) ; Fl. des Serres, t. 
g12 (1854) ; Rev. Hortic. 301, t. 16 (1855) ; Illustr. Horticol. 
t. 140 (1857) ; C. B. Clarke in Hook. f. FI. Brit. Ind. iti. 472 
(r882), incl. var. calophylla (partly) ; Millais, Rhodod. 206 
(1917); R. Jenkinsii, Nutt. in Hook. Kew Journ. v. 361, 
incl. vars. (1853) ; Regel, Gartenfl. ix. 1, t. 277 (1860). 
A much-branched shrub up to 2.75 m. high; branches erect, 
supple, covered with pale papery bark ; older branchlets marked 
with the broadly triangular leaf-scars, the bark closely marked 
with small black spots; one-year-old branchlets laxly leafy, 
about 5 mm. thick, rather closely dotted with the minute dark- 
coloured remains of the fallen scales; young lateral branchlets 
closely covered with rust-coloured scales, not hairy. Leaves of 
the one-year-old shoots lanceolate or oblong-lanceolate, obtuse 
or subacute at the base, acutely shortly acuminate at the apex, 
averaging about 10-12 cm. long, and 3-4 cm. broad, the leaves 
from older parts of the shoots more elliptic and about 15 cm. 
long and 6.5 cm. broad, all firmly coriaceous, dull green and at 
length nearly glabrous above (at first fairly densely lepidote), 
completely covered below with very dense overlapping reddish- 
brown scales,* the latter with a membranous fringe nearly as 
broad as the nucleus ; lateral nerves 8—10, very slender, slightly 
raised and forming a reticulate surface above, fainter beneath, 
in the older leaves several secondary lateral nerves appearing 
between the original ones; petiole 1.5~2.5 cm. long, closely 
punctulate with the remains of the scales. Flowers 2-4 in each 
inflorescence, all arising from the same level; floral buds 
broadly ovoid, about 2.5 cm. long and 1.5 cm. in diameter, the 
surrounding foliage leaves gradually becoming smaller inwards : 
When these scales fall off, as they frequently do in older leaves, they leave 
sot lower leaf surface with a punctate appearance, the “pits” in this S species 
aring about their own diameter apart. 
