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PACIFIC SCIENCE, Vol. Ill, April, 1949 
species were involved in African Alstonia. 
These, although best distinguished by their 
flowers, almost always present slight differences 
in leaf habit, differences which are quite evident 
in typical collections. From a study of the vege- 
tative features of A. Gilletii and the type of A. 
congensis it is concluded that the two represent 
one and the same species. Consequently the 
plants previously referred to A. congensis need 
some other name. This need is filled by A. 
Boonei. 
5. Alstonia angustiloba Miq., FI. Ind. Bat. 2: 
438. 1856. 
A. calophylla Miq., FI. Ind. Bat. 2: 439. 1856. 
A. angustiloba var. (3 glabra Koord. & Val., 
Bijdrage 1: 121. 1894. 
A. ituahigensis Elmer, Leaflets Philip. Bot. 4: 
1447. 1912. 
Paladelpha angustiloba Pichon, in Paris Mus. 
d’Hist. Nat. Bui. II, 19: 299. 1947. 
Trees up to 40 m. tall and 1 m. in diameter. 
Petioles 2-3.5 cm. long. Leaf blades elliptic, 
7-23 cm. long and 3-8 cm. broad, acuminate 
at apex, the lateral nerves 45-100 pairs, 1-3 
mm. apart, horizontal, very straight, the trans- 
verse veins often prominulous on upper side but 
not as prominent as those of A. scholaris. In- 
florescence puberulent, many-flowered, the pedi- 
cels short- (up to 3 mm. long), puberulent; 
calyx lobes ovate to lanceolate, 0.9— 2.2 mm. 
long, obtuse or acute at apex, puberulent out- 
side, glabrous or sparsely hairy inside, ciliate; 
corolla tube about 6-7 mm. long, glabrous out- 
side; corolla lobes oblong-ligulate to almost 
orbicular, very faintly ciliate near apex; anthers 
0.7-1 mm. long; follicles varying from densely 
puberulent to glabrous. 
Type. — " Alstonia spectabilis herb. L. Batav. 
excl. syn. R. Br. Java.” 
Illustrations. — Koord. and Val, Atl. Bau- 
mart. Java (1916) t. 642 (leafy br. and infl., fl., 
fl. analysis, frs., seed, habit of tree ) . 
Distribution. — Malay States, Sumatra, and 
Java, north to Borneo and Palawan in the 
Philippines. Reported from rain forests and 
teak woods; also from limestone hills. 
Malay States: Alvin’s coll. (Malacca; Sing); 
Cantley 166 (Singapore; K); Corner (Johore; 
Sing); Curtis 3087 (Penang; Sing); Derry 138 
(Malacca; Sing); Fox’s coll. 12699 (Penang; 
Sing); Griffith (Malacca; G, K, L); Hervey 
(Malacca; K); Holt turn (Singapore; Sing); 
King’s coll. 5270 (Perak; K); Ridley 8090 
(Singapore; Sing), 8095 (Singapore; K); 
Wray 4058 (Perak; K, Sing). 
Riouw: Neth. Ind. For. Serv. 27574 (Mo). 
Sumatra: Achmad 665 and 1032 (Simaloer; 
L), 1086 (Simaloer; K, L, Sing); Bartlett 7251 
and 8432 (Asahan); Boscbproefst. 515 and 
598 and 831 and 919 and 4148 (Palembang; 
L); Fndert E. 1065 (Benkoelen; L); Krukoff 
204 (Kisarin; NY, US); Neth. Ind. For. Serv. 
31968 (Palembang; A); Teysmann (herb. L. 
Bat. 994; Loeboe Aloeng; type coll. A. calo- 
phylla; G, K, L); Thorenaar 831 (Palembang; 
L). 
Java: Herb. Hort. Bat. Bog. 285 (cult. 
IV-A-47; US); Kollmann (1838); Ko orders 1 
(K), 12341 (Soekaboemi; UC), 14230 (K); 
Neth. Ind. For. Serv. 3923 (Pandeglang; A). 
Borneo: Haviland 1732 (Kuching; K, Sing); 
Neth. For. Serv. 14202 and 16068 (A), 18857 
(Berouw; A); Motley 775 ( Bangormassing; 
K). Brit. North Borneo: Keith 1271 and 
1321 (Sandakan; K). 
Philippines: Palawan: Elmer 13167 (type 
coll. A. iwahigensis; A, F, G, GH, K, L, Mo, NY, 
VS); Merrill 748 (sterile; NY, US). 
Vernacular names. — British North Bor- 
neo: Pulai; Malay States: Jelutong. 
Type of A. calophylla. — "Sumatra, bij Loeboe 
Aloeng (Teysm.).” Sterile, and apparently 
consists merely of juvenile leaves. Closely re- 
sembling the type of A. calophylla are Krukoff 
204 and, less so, the Hervey (June 29, 1885) 
collection. Flowering material has not yet been 
directly linked with these leaf forms. 
A. angustiloba var. glabra was distinguished 
solely by its glabrous ovary, that of the typical 
form being hirtellous. The ovaries of the speci- 
mens examined vary from completely glabrous 
to very sparsely pubescent (several hairs pres- 
ent) to sometimes definitely hirtellous. Because 
