Revision of Genus Alstonia — MONACHINO 
165 
nao: For. Bur. 29612 (UC). Mindoro: Bur. Sci. 
29586 (A), 46440 (A); Merrill 2278 (US). 
Palawan: Curran 4495 (type coll. A. oblongi- 
folia ; K, NY, US); Elmer 12929 ; For. Bur. 
29279 (A). Panay: For. Bur. 22956 (Mo). 
Romblon: Elmer 12157. Sihutu: Herre 1201, 
1202 (A). 
Malay States .—Corner (Trengganu; Sing) ; 
CVMif 278 (Penang); Maingay 1066/2 (L), 
1070/2 (GH); Seortechini 1024 (type coll. A. 
pangkorensis ; fr.; Cal) ; Sing. Field No. 252 and 
21950 (Penang; Sing), 22422 (Kelantan; 
Sing); W alii ch 1649 (Penang). 
British North Borneo. — Balajadin 4020 
( Kudat; Sing); For . Dept. Sandakan 2680 
(UC) ; Villamil 248 ( A) ; Castro and Melegrito 
1492 (Banguey; A). 
Bosch fir oefst. 5250 (Tapanoeli 
Silindoeng; sterile; L). 
Biliton. — Herb. Biliton 84 (sterile; L). 
Celebes. — Koorders 16041 , 16042 , 16044, 
19745 and 24068 (Minahassa; sterile; L). 
Java. — - Brink 5299 (Batavia; L); Hort. Bot. 
Bog. 286 (cult.; US) ; Merrill (cult. IV-A-65). 
India. — Haines 2994 (Paraganas; prob. cult.; 
K). 
Mauritius.-— H orne ( cult. ; K ) . 
Vernacular names.— Philippine Islands: 
Batino, Cayacayao ; Annam: Cay So Dua; North 
Borneo: Bakau. 
Type of A. macrophylla (2 glabra.—" Insula 
Penang. A. costata Wall list n. 1650” (error 
for 1649). Don first called attention to this 
plant: ", . . does not appear to differ from A. 
macrophylla , unless in the leaves being gla- 
brous, narrower, and the veins more distinct.” 
De Candolle assigned a varietal name to it on 
basis of Don’s comment. Examination of the 
numerous collections now available make it 
obvious that the characters given for this 
variety do not hold. The leaves of the type 
collection are not entirely glabrous but faintly 
pubescent along the veins on the underside. 
A. Batino, described from the Philippines 
without citation of type, is referred with pro- 
priety to A. macrophylla by Merrill. Blanco’s 
Echites trifida , which was a misapplication of 
Jacquin’s name, is also referred with certainty 
to A. macrophylla by Merrill. 
Type of A. pangkorensis. — 'Dindings: Pang- 
kor Island, Seortechini 1024.” Described from 
a fruiting specimen and placed under "Species 
of Doubtful Position” by King and Gamble, the 
type apparently represents old leaves, greatly en- 
larged and with lateral nerves more distant and 
the veins more boldly raised than is usual for A. 
macrophylla. The calyces and pedicels, as well 
as the fruits, are characteristically those of A. 
macrophylla. 
Type of A. paucinervia. — "Luzon, Province 
of Camarines, Paracale, For. Bur. 18726 Dar- 
ling, Mar. 19, 1910, in forests at an altitude of 
about 70 m., locally known as batino.” Flower- 
ing material from New Guinea (in the present 
paper named A. Brassii) has been identified 
by Markgraf as belonging to this species. The 
vegetative and fruiting characters of the Philip- 
pine type and the New Guinea plants are very 
similar, but not reliable. It is most likely that 
A. paucinervia is merely an atypical form of 
A. macrophylla as Merrill himself suggested. 
Type of A. oblongifolia.—" Palawan, in old 
clearings near Puerto Princesa, For. Bur. 4495 
Curran, June 5, 1906.” It seems that because of 
its small leaves the type was originally com- 
pared with A. angustifolia. The flowers are 
typically those of A. macrophylla, which not 
infrequently also has small leaves. 
Type of A. macrophylla var. mollis. — ”F. B. 
17128 Curran.” As pointed out by Markgraf 
(1927: 178) the type of the species is the 
pubescent form. 
Forbes and Hemsley (1889: 95) cite, from 
Yunnan, an Alstonia sp. "allied to A. macro- 
phylla Wall., but apparently different . . . (An- 
derson!) herb. Kew.” I have seen from Yunnan 
only species in the § Blaberopus. 
It has been estimated (fide Macmillan) that 
1,000 seeds of A. macrophylla weigh less than a 
gram. 
