VIII. c, 5 Merrill: Philippine Melastomataceae, II 339 
3. Leaves rounded at the base 2. A. mearnsii 
3. Leaves acute or decurrent-acuminate at the base. 
4. Bracts and calyx glabrous or nearly so; petioles nearly glabrous. 
3. A. lagunensis 
4. Bracts and calyx prominently ferruginous-furfuraceous ; petioles 
and inflorescence more or less densely setose 4. A. loheri 
2. Leaves definitely 5-plinerved, rarely nearly or quite 5-nerved, always 
colored on the lower surface, cinereous to ferrugineous or cupreous, 
the lepidote scales minute, indistinct, mostly entirely covering the 
lower surface of the leaf, not scattered. 
3. Leaves very definitely 5-plinerved, the inner pair of nerves leaving 
the midrib about 1 cm above the base of the leaf. 
5. A. williamsii 
3. Leaves less definitely 5-plinerved, the inner pair of nerves leaving 
the midrib nearer the base of the leaf. 
4. Lower surface of the leaves very densely ferruginous-lepidote; 
leaves thickly coriaceous 6. A. ferruginea 
4. Lower surface of the leaves densely papery-lepidote with very 
thin, pale-brown scales; leaves chartaceous 7. A. meyeri 
4. Lower surface of the leaves very densely cupreous-lepidote; leaf- 
blades distinctly decurrent along the petioles 8. A. dioica 
4. Lower surface of the leaves cinereous or pale brownish-cinereous, 
the minute scales very indistinct. 
5. Leaves 10 to 15 cm long 9. A. ramosii 
5. Leaves 20 to 30 cm long. 10. A. candolleana 
1. Leaves definitely 3-nerved or 3-plinerved, the additional pair, if present, 
always very slender and marginal, never prominent. 
2. Leaves entirely glabrous, green or nearly so on the lower surface, 
sometimes glaucous, or the younger ones minutely cinereous- 
lepidote, glabrescent; nerves sometimes more or less furfuraceous, 
usually glabrous. 
3. Leaves 3-nerved. 
4. Calyx 3 to 4 mm in diameter, the teeth very prominent; leaves 
entirely glabrous 11. A. viridifolia 
4. Calyx about 2 mm in diameter, the teeth small; leaves at least 
somewhat furfuraceous on the nerves on the lower surface. 
12. A. rolfei 
3. Leaves 3-plinerved. 
4. Lateral nerves extending to the very apex of the leaf. 
5. Leaves 1.5 to 3.5 cm wide, slenderly caudate-acuminate. 
13. A. acuminatisshna 
5. Leaves 4 to 8 cm wide 12. A. rolfei 
4. Lateral nerves confluent with the midrib at the base of the prom- 
inent acumen 14. A. vjenzelii 
2. Leaves with distinct, scattered, brown, lepidote scales which do not 
cover the entire lower surface, usually about one scale to each 
ultimate reticulation. 
3. Leaves definitely 3-nerved. 
4. Petals 4 to 5 mm long; calyx 6 to 8 mm in diameter. 
15. A. megalantha 
4. Petals 3 mm long; calyx about 5 mm in diameter. 
16. A. negrosensis 
