190 
ROBINSON. 
on the throat of. the calyx, each about 0.8 mm long, 0.4 mm wide near the 
apex, where it forms two lateral obtuse lobes and a short acute apical 
tooth, narrowed into a conspicuous claw at the base: male flowers with 
a disk covering the base of the calyx- tube and free for a very short 
distance, the androgynophore developing, with age, attaining a length 
of 2 mm, the 5 filaments widely spreading from its apex, gradually 
decreasing in thickness upwards, 1 mm long; anthers attached above 
the middle of the back, 1 mm long, 0.7 mm wide, cordate at the base, 
the cells diverging very slightly; rudiment of the ovary at the apex of 
the androgynophore, 1.3 mm long, lanceolate: female flowers with a 
thin disk attached to the calyx for about 0.7 mm, and then free for 1 
mm, its upper margin with a conspicuous tooth opposite each of the 
calyx-lobes and some smaller intervening ones; ovary ovoid, glabrous, 
1.5 mm long, narrowed at the apex to a neck bearing 3 styles 1 mm 
long, which divide into 2 blunt arms for an additional 0.5 mm; ovary 
3-celled, each cell containing 2 ovules which are ovate in outline, 0.5 
mm long and 0.2 mm wide in diameter. 
A glabrous tree 18 m high, with a trunk 20 cm in diameter, its bark 
reddish-brown, somewhat flaky, that of the ultimate branches brownish 
with scattered lenticels; leaves alternate, the petioles 6-8 mm long, the 
lamina coriaceous, entire, lanceolate or narrowly elliptic, 9-14 cm long, 
2. 5-4. 3 cm wide, the margins slightly revolute at the acute base, gradually 
narrowed from the middle and prolonged for 2-2.5 cm into a slender 
api culate acumen, sometimes merely acute on one side and then slightly 
falcate, the upper surface olivaceous, the lower surface brownish-green, 
both surfaces shining, the upper especially; pairs of primary lateral veins 
9—11, both they and the finely reticulated secondary venation conspicuous 
021 both surfaces, but the midrib much more prominent on the lower. 
Type collected at an elevation of 165 m at Sax River, District of Zamboanga, 
Mindanao, by R. S. Williams, no. 2356, with flowers of both sexes, February 23, 
1905. 
3. Cleistanthus myrianthus Kurz For. FI. Brit. Burma 2 (1877) 370? 
Nanopetalum myrianthum Hassk. in Versl. Ivon. Akad. Wetensch. 4 (1855) 140. 
Mindoro, Baco River, Merrill 1812. Masbate, Uson, For. Bur. 1005 Clarlc. 
Balabac, Cape Melville, Bur. Sci. 1/62 Mangubat. 
All three of the specimens cited have somewhat immature flowers and no 
capsules, but agree fairly closely in vegetative characters. The greatest dif- 
ficulty in this identification is the real identity of Cleistanthus myrianthus. 
Nanopetalum myrianthum is described as having leaves from the acute base 
oblong or oblong-lanceolate acuminate, rarely acute or obtuse, and a specimen 
from a tree cultivated at the Buitenzorg Garden agrees with this description. 
In Kurz’s original description the leaves are said to be oblong to oblong- 
lanceolate, obtuse at the base, more or less acuminate. But Hooker in the Flora 
of British India says that they are narrowly linear-lanceolate acuminate base 
acute. These latter descriptions are entirely inconsistent, and it seems most 
improbable that Kurz and Hooker can have had the same species in view. The 
