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The Philippine Journal of Science 
1913 
3. Leaves definitely 3-plinerved. 
4. Leaves pale on the lower surface, their margins not revolute, the 
acumen sharp; inflorescence subglabrous 17. A. subcaudata 
4. Leaves green on the lower surface, their margins revolute, the 
acumen more, or less blunt; inflorescence densely dark ferru- 
ginous-lepidote 18. A. gitingensis 
2. Leaves more or less densely covered on the lower surface with minute, 
ferruginous to cinereous-ferruginous or pale lepidote indumentum 
which quite or nearly covers the lower surface of the leaf, often 
more or less evanescent in fully mature leaves. 
3. Leaves very densely ferruginous-lepidote, the individual scales more 
or less distinct under a lens 19. A. pulchra 
3. Leaves minutely pale- or cinereous-ferruginous-lepidote, the scales 
indistinct under a lens. 
4. Calyx 1.5 to 2.5 mm in diameter. 
5. Calyx glabrous or nearly so, the leaves pale-gray to nearly 
white beneath 20. A. bicolor 
5. Calyx densely cinereous- or ferrugineous-lepidote; leaves more 
or less pale-brownish beneath. 
6. Leaves 10 cm long or less, apex slenderly caudate-acuminate, 
adult ones glabrescent 21. A. parvifolia 
6. Leaves exceeding 10 cm in length. 
7. Leaves pale-gray or whitish beneath; rachis and branches 
of the inflorescence glabrous or subglabrous. 
22. A. discolor 
7. Leaves pale-brownish-cinereous, the inflorescence densely 
lepidote or more or less furfuraceous. 
8. Lower surface of the leaves with pale-brownish indu- 
mentum of the same color on all parts. 
23. A. cumingiana 
8. Lower surface of the leaves pale-lepidote in strong con- 
trast to the dark brown lepidote nerves and nervules. 
24. A. piperi 
4. Calyx 3 to 4 mm in diameter. 
5. Leaves 3-nerved or obscurely 3-plinerved, more or less glaucous 
beneath. 
6. Indumentum of the inflorescence pale; leaves 3-nerved, up to 
16 cm in length 7. A. meyeri 
6. Indumentum of the inflorescence dark reddish-brown; leaves 
obscurely 3-plinerved, 8 to 10 cm long 25. A. glauca 
5. Leaves very prominently 3-plinerved, 20 to 30 cm long. 
26. A. platyphylla 
1. ASTRONIA APOENSIS Elm. Leafl. Philip. Bot. 4 (1911) 1206. 
Mindanao, District of Davao, Mount Apo, Elmer 1H27 (type number). 
This very characteristic endemic species is readily recognizable by its 
unusually large, many-nerved leaves. 
2. ASTRONIA MEARNSII sp. nov. 
Arbor circiter 10 m alta ut videtur polygamo-dioica ; foliis 
coriaceis, ellipticis ad oblongo-ellipticis, circiter 20 cm longis, in 
siccitate utrinque pallide viridibus, subtus distinct lepidotis, basi 
