HUTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 53 
Ovary 6-celled, 5-mm. long, densely lepidote; style about as 
long as the stamens, scaly and slightly pilose only as far as 8 mm. 
above the base, the upper part glabrous, crowned with a green 
discoid stigma. Capsule 6-valved, 2 cm. long, about 1.5 cm. 
thick, rather asymmetrical at the base, densely scaly, girt at 
the base by the persistent calyx and the conspicuous tomentose 
disk. 
As Rhododendron ciliicalyx is likely to prove of considerable 
interest to physiologists (see note below), it seems advisable to 
give the salient features of the type specimen, collected by 
Delavay, 736, on Mt. Pee-cha-ho, near Mo-so-yn, Yunnan. 
These are as follows :— 
One-year-old branchlets scaly, sometimes sparingly strigose 
amongst the scars of the bud-scales. Petioles scaly, long-setose 
on the margin (these setae readily rub off). Leaf-scales below 
unequal-sized, considerably more than their own diameter 
apart. Pedicels densely scaly. Calyx lobes well developed but 
variable in size, oblong to oblong-ovate, rounded at the apex, 
2.5-6 mm. long in the same flower, in other flowers as small 
as 2-3 mm. long, sparingly scaly outside, rather densely 
fringed with hairs about 3 mm. long. Corolla sparingly lepidote 
only on the back of the lobes,’ the tube softly pubescent 
towards the base. Style pubescent and sparingly scaly only 
towards the base. 
W. YUNNAN. On the sides of rocky hills at the entrance to 
the gorges of Mt. Pee-cha-ho, near Mo-so-yn, 7300 ft., shrub 
about 3 ft. high, flowers rose or white, 27th March 1887, Delavay, 
736 (type); same locality, in fruit, 16th November 1887, 
Delavay ; in flower, 17th April 1888, Delavay. 
R. ciliicalyx has not appeared among any recent collection 
that I have seen, and it has probably not been gathered since 
the date of the specimens quoted above. In the plants of this 
species grown in the Himalayan and Temperate Houses at Kew 
I was very surprised to find that the papillae, so character- 
istic of the whole of the Maddeni series, have almost entirely 
disappeared. Only occasionally in leaves near the glass and 
exposed to good light do the epidermal cells of the lower leaf 
surface show a trace of papillous differentiation, and then only 
of the slightest. The same is evident of a plant grown in an 
unheated greenhouse by Mr J. C. Williams, Caerhays Castle, 
Cornwall, who very kindly forwarded a twig for examination. 
On the other hand, the specimens cultivated in the greenhouses 
at the Edinburgh Botanic Garden have papillous leaves. I 
hope to publish a separate note on this later. 
