10 SIR DIETRICH BRANDIS—AN ENUMERATION 
parvifolia, Dyer, pauciflora, King, macroptera, Dyer. These 
and others Mr. Ridley regards as sexennially flowering kinds; 
they flower with remarkable regularity, all blooming within 
one or two days of each other, so that, if one tree is found 
in flower or seed, all trees of the same kind in that district will 
be in the same condition. 
External Morphological Characters. 
The stipules are, as a rule, small and early deciduous. An 
exception is Dipterocarpus, where the large stipules form a good 
generic character. A small number of Shoreas have large 
stipules, which in some do not fall early. Most of them belong 
to section Pinanga, S. grandiflora and macrantha, sp. nove, 
purpuracea, Miq., with semipersistent, S. Pinanga, Scheff., 
S. Gysbertsiana, Burck, with deciduous stipules. But in other 
species closely allied to them they are minute or caducous. Of 
section Brachyptera, S. stenoptera, Burck, and of Anthoshorea, 
S. compressa, Burck, have large stipules. One Vatica, one Doona, 
one Stemonoporus have large stipules, but as a rule the stipules 
in these genera are small and caducous. 
The petiole is almost invariably thickened below the base of 
the blade, and this, as well as the lateral cortical leaf-traces, 
which often show in good herbarium specimens on a leaf-bearing 
internode, giving it an angular appearance, are useful characters 
to recognize specimens of this natural order. The leaves are 
coriaceous with few exceptions, and it is remarkable that most 
of these exceptions occur in the case of species which grow on 
the Philippine Islands. Dipterocarpus vernicifluus, Blanco, 
affinis and speciosus, nov. spp., as well as Anisoptera thurifera, 
Blume, and Shorea furfuracea, Miq., may be mentioned. However, 
even in the Philippine Islands, among the 26 species known, the 
majority have coriaceous leaves. The leaves are always penni- 
veined, and the arrangement of the secondary and tertiary nerves 
affords useful specific, and in a few cases (Shorea, Pachynocarpus) 
also good generic characters. At the risk of being considered 
pedantic, I have adopted this designation, as it also holds good 
in leaves with several basal primary nerves. The tertiary nerves 
are either reticulate or parallel, and in the latter case more or 
less at right angles to the secondary nerves, in some cases to the 
midrib. 
