34 HutTcHINsoN—THE MADDENI SERIES OF RHODODENDRON, 
fringe, the epidermis very slightly papillous between the scales ; 
midrib slightly raised in a groove, raised below, rather densely 
covered with a little larger scales than on the leaf surface, about 
2.25 mm. broad at the base, gradually tapered to the apex ; 
lateral nerves probably about Io (in one small leaf there are 8), 
slightly impressed above, a little prominent below, diverging 
Fic, 5.—Rhododendron liliiflorum, Lév. Nat. size, 
from the midrib at an angle of about 60°, slightly flexuous, 
faintly looped towards the margin; secondary nerves scarcely 
visible below; petiole 2.5 cm. long, nearly 3 mm. thick at the 
base, closely scaly, apparently not grooved on the upper side, 
reddish-purple. Pedicels (length?) rather closely scaly, about 
3 mm. thick at the tip. Calyx 1 cm. long, lobed to nearly the 
base on one side, on the other the lobes connate nearly their 
full length, very broadly oblong, rounded at the apex, with 
crenulate (probably at first scaly) margins, membranous, about 
