HuTCHINSON—THE MADDENI SERIES OF RHODODENDRON. 17 
Filaments of the stamens hairy in their lower part : 
Corolla tube about 2 cm. long ; anthers 3-4 mm. long 
- 3. brachysiphon. 
Corolla tube over 3¢ cm. long ; anthers 5-6 mm 
Stamens 25; leaves rather small, |, oblong-lanceolate obtuse and 
rounded at besa: ends : : . 4. polyandrum. 
Stamens 15-2 
Seales of the winter flower-bearing buds not pubescent 
: mani purense 
Scales of the winter buds silky “pubescent towards the t 
6. fase 
oe Megacalyx.—Petiole convex and not grooved on the upper side (very 
slightly so in R. megacalyx) ; na usually large and. ebtest! 
nerved, with the midrib raised on the upper surface ; stamen 
10-1 
the filaments always haba ; ovary cells 5; calyx ee 
with broad lobes I-2.3 cm. long. 
Stamens 15; corolla lepidote all over the outside; leaves large, 
15-19 cm. long, ae with 18-20 lateral nerves ; petioles 
2.5-4 cm. long ; fo ‘excellens, 
Stamens Io: 
ene and calyx not lepidote; calyx divided to about the 
e, with very broad lobes ; ongal 2 cm. long, scarcely 
ger than the persistent calyx lob . 8. megacalyx. 
Pedicels and lower part of the calyx fepeocte Cs 
mgt! puis all over the outside; capsule 4.5 cm. long, 
acute ; Chinese Ssiceeee del species . 9. lilitflorum. 
i Ts ] epidote e or only the lower part of the tube or 
at the base ; Indian snes 
sees softly pubescent as well as lepidote ; goons 
ne-year-old branchlets bristly hairy ; calyx lo os kk 
brous on the margins 
Corolla cream, with er ey lines outside down the middle 
of the lobes and down t 10. rhabdotum. 
Corolla white, sometimes tinged with rose outside 
. Dalhousiae. 
Pedicels only lepidote 
Corolla about aes cm. long ; calyx lobes nee densely 
ciliate ; lateral-nerves of leaves 12-16 . 2. iM 
Corolla about 10 cm. long or more; calyx ies sparingly 
or scarcely ciliate ; lateral nerves 10-12. 13. Nu¢ttalltt. 
Ill. Ciliiealyx.—Petiole with a V-shaped groove on the upper concave 
side ; Lagos Ss m-sized or rather small, the midrib ee 
above ; o (-13) ; ovary cells 5-7 (frequently 6) ; calyx 
tially pita i Bevsloped a aa ciliate. 
— quite smooth its full length, neither hairy nor lepidote ; Pat bes 
a sae ad, 8-10 mm. long; corolla not lepidote outside ; 
nchlets bristly hairy ; Sikkim species 14. pS ehe 
Style slightly lepidote at the base ; calyx lobes large, about 8 mm. 
long, densely fringed with crinkly hairs, lepidote outside ; corolla 
densely lepidote outside, a: leaves age _ the young 
branchlets hee sate ee ; W. Yunnan 
£3: Pitacinicaniill 
B 
