24 HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 
contiguous, whilst in the specimen before us they are 2-3 times 
their own diameter apart. It should be noted in Nuttall’s 
-description (see below) that the leaves are described as being 
-glaucous, and also as less scaly than in R. Jenkinsti (=R. Mad- 
deni), points which fit the specimen shown in the drawing 
exactly 
weve 3. Rhododendron brachysiphon, Balf. f. nom. nov. 
R. brevitubum, Balf. f. et Cooper, in Notes, Roy. Bot. Gard. 
W474 Edinb. x. 88 (1917), non J. J. Smith (1914). 
A shrub about 2.5 m. high. Brvanchlets straight, sparingly 
leafy, the older parts grey and shining, punctate with the scars 
of the fallen scales, those a year old about 4 mm. thick and 
rather closely lepidote ; axillary leaf-bearing buds still dormant 
or only just expanding at the time of flowering, the bud-scales 
densely lepidote outside, slightly ciliate. Leaves obovate or 
the larger ones more or less elliptic, 5.5—12.5 cm. long, 2.5—5 cm. 
broad, narrowed to the base, rounded to a small blunt mucronate 
apex, rather thinly coriaceous, glabrous and reticulate above 
when mature, very densely rusty-lepidote beneath, the scales 
nearly contiguous with a few larger ones scattered here and 
there, fleshy in the middle with a fairly wide membranous fringe, 
the epidermis between the scales rather laxly papillous ; midrib 
sunken and closely lepidote on the upper surface, prominent be- 
low and rather laxly lepidote, 2 mm. wide at the base, gradually 
tapered to the apex; lateral nerves 6-8 on each side of the 
midrib, diverging from it at an angle of about 60°, slender, 
arcuate and ascending parallel with the margin, distinct below 
and a little flexuous ; secondary nerves not visible ; petiole up 
to 1 cm. long, channelled on the upper side, closely lepidote- 
punctate. Inflorescence 2-3-flowered ; pedicels 0.5-1 cm. long, 
closely lepidote. Calyx about 7 mm. long, 5-lobed to near the 
base ; lobes ovate-triangular, unequal, submembranous, glabrous 
except the lepidote base outside. Corolla 5-lobed, pink and 
scented, only 4.5 cm. long; tube 2 cm. long, lepidote outside 
and on the back of the lobes; lobes 2.5 cm. long, rounded. 
Stamens 20, unequal, exserted, reaching to above the middle 
of the corolla lobes; filaments slender, strigillose-pubescent in 
the lower third or half ; anthers 3.5-4 mm. long. Ovary short, 
broadly ovoid, about 5 mm. long, rusty-lepidote ; style about 
as long as the corolla, curved, laxly lepidote in the lower half, 
crowned by a large lobulate stigma. Capsule not seen. 
BuuTan. Punakha, 6000-7000 ft., bush 8 ft. high, on 
steep hillsides, fls. 27th June 1915, R. E. Cooper, 3936 (Herb. 
bias 
