400 MR. 8, T. DUNN: A REVISION 
Leaves oblong-lanceolate 
Leaves green beneath. [et Thoms. 
Buds perulate ....... TEE 13. strigosa, Hook. f. 
Buds eperulate ........, eren 14. Hemsleyana, Dunn. 
Leaves glaucous Бепеа!һ...................... 15. Henry’, Dunn. 
Mature leaves densely hairy. 
Рифезсепсе strigose .,...‚,,,,................ 16. rudis, Dunn. 
Pubescence velvety ....... ene heres 17. Davidit, Franch. 
Lenves tomentose with stellate hairs. 
Leaves cuneate at bas... 18. lanceolata, Dunn. 
Leaves rounded or cordate at base, 
Petioles 6-8 mm. long ........ ТЕРАН 19. eriantha, Benth. 
Petioles over 12 mm. long. 
Leaves broadly ovate. 
Young shoots setose, .,,,,,,,........ TENE 20. chinensis, Planch. 
Young shoots woolly TEE 00 21. lanata, Hemsl. 
Leaves oblong, 
Leaves membranous ..,.,,,.,,........... 22, fulvicoma, Hance. 
Leaves coriaceous. ,,,,.,..,..,..,....... 25. pachyphylla, Dunn. 
Geographical distribution *.—The genus as at present known falls naturally 
into three divisions, distinguished by their floral and vegetative characters 
no less than by their geographical dispersion. One is essentially northern, 
extending over the islands of Sachalien and Japan across Manchuria to Shensi 
in N. China, and then penetrating to the south along the mountain-ranges of 
W. China, or, in other words, the eastern flank of Ti bet, almost to the tropies in 
Yunnan. [t is distinguished by its smooth stems and leaves, by its glabrous 
ovaries and unspotted fruit, and comprises the first two sections, which are 
separated principally by the marked difference in the shape of their ovaries. 
The Ampulliferæ, which, as their name implies, possess bottle-shaped ovaries, 
cover the whole of the region indicated. The most widely distributed species 
is A. polygama, the area of which is flanked near its southern extremity by 
the isolated areas of two closely allied species with reduced floral whorls, 
viz., A. tetramera on the west and А. valvata on the east. A. rufa has a 
range extending further south, but not so far north as A. polygama. The 
Leiocarpæ, represented at present by only one species, A. Kolomicta, have 
almost the same limits as the Атри ог, 
The Maculatie, with mostly glabrous leaves and stems, but with their ovaries 
usually pubescent, form a natural transition between the above-mentioned 
sections and the next. They are, moreover, intermediate in geographical 
area. They occupy a well-defined band immediately north of the tropics 
from the Himalaya to Formosa. The first two sections are almost wholly to 
the north of this band, while the fourth is only so to a small extent, though 
reaching far beyond it to the south. The dispersion of the Maeulatze has 
* See Map (PI. 25). 
