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PACIFIC SCIENCE, Vol. Ill, April, 1949 
10942 (Johore; Sing); Sing. Field no. 34057 
(Selangor; A); C. Smith 18151 (Selangor; 
Sing). 
Singapore. — Anderson 140 (BM, K, L); 
Baker 5660 (G); Corner (Sing); Cantley 
2789 (Sing); Goodenough 2714 and 2716 
(Sing); Maingay 1070 (L); Ridley 14138 
(Sing), 2714 (L), 2716 (K), 2834 (BM, 
L, Sing), 6706 (Sing); Wallich 1650 (1822; 
type coll.; fl.; G, K). 
Sumatra. — Palembang: Dumas 1533 (fl.; L) ; 
Grashoff 974 (fl.; L). 
Bangka. — Grashoff 50 (fl.; L). 
Borneo. — Beccari 1628 (type coll. Amblyo- 
calyx Beccarir, fl.; K), 3207 (Sarawak; fl.; K); 
Boschproefst. 6320 (Mempawa; L); Hallier 
1622, B.2559 (Semitau); Haviland 2064 (Sara- 
wak; K, L, Sing), 2093 (Sarawak; BM, L, 
Sing); Mjoberg (Sarawak). 
Type of Amblyocalyx Beccarii. — "Sarawak, 
Borneo, Beccari 1628.” 
Type of A. angustifolia var. elliptica . — 
"Penang: Curtis .” King and Gamble write 
"Scarcely a variety, but the shape of the leaves 
is very distinct . . . elliptic ... 3 to 4 in. long, 
1.25 to 1.75 in. broad.” Ridley (1923: 347) 
places the variety in synonymy of A. latifolia. 
A. Guillaumin (1943: 55) writes that ” Al- 
stonia angustifolia (? Par sonia angustifolia )” 
truly exists in New Caledonia. It is very likely 
that his crediting A. angustifolia to New Cal- 
edonia is due to some confusion. The original 
description of Parsonia angustifolia Baillon does 
not suggest Alstonia. 
16a. Alstonia angustifolia var. annamensis 
Monachino, var. nov. 
A forma typica speciei tubo calycis brevissimo 
et corollis brevioribus (tubo 2.3-2.6 mm. 
longo) extus minus pubescentibus recedit. 
Type. — Poilane 5970, Indo-China, Annam, 
prov. Phan Rang, Cana; received at herb. Paris 
in June, 1923. (Arnold Arboretum.) 
Annam. — Poilane 5970 (type; A, P), 6784 
(massif de la Mere et l’Enfant) (fl.; A, NY), 
10142 (Phan Rang; fl.; P). 
Vernacular name. — Annam: Cay lac. 
16b. Alstonia angustifolia var. latifolia King 
& Gamble, in Jour. As. Soc. Beng. 74 (2) : 
441. 1907. 
A. latifolia Ridley, Fl. Mai. Penins. 2: 347. 
1923. 
Petioles about 2.5 cm. long; leaf blades 
usually 6.5-8 cm. broad. Calyx lobes hardly 
spreading, sharper at apex than those of the 
typical form; corolla tube 4. 5-5. 5 mm. long; 
anthers 1-1.3 mm. long. 
Cotypes cited: "Penang: Maingay (K.D.) 
1070/1, 1070/2; Curtis 2491; Fox 80; Ridley 
9306; Stoliczka; King’s Collector 1341.” 
Lectotype. — A. C. Maingay 1070/1, Malay 
States, Penang; flowering. 
Distribution. — Malaya (principally in Pen- 
ang) and the east coast of Sumatra. 
Malay States. — Penang: Corner 32451 
(Sing); Curtis 2491 (fl.; BM, Sing); King’s 
coll. 1637 (fr.; Sing); Maingay 1070/1 (type; 
L); Ridley 9356 (fl.; Sing); Symington 28042 
(fr.; Sing). 
Malacca. — Ridley 3189 (fr.; Sing). 
Sumatra. — Boschproefst. 2917 (Simeloen- 
goen; fl.; L); 3843 (Silindoeng; fl.; L); 
Rahmat Si Boeea 8534 (vincinity of Toemoean 
Dolok; fl.; A). 
Ridley states that A. angustifolia var. latifolia 
is highly distinctive. In elevating the variety 
to specific rank he placed A. angustifolia var. 
elliptica in synonymy. Specimens cited by him: 
"Penang Hill (Maingay and others).” 
This variety seems transitional to A. spec- 
tabilis. 
17. Alstonia parvifolia Merrill in Philippine 
Bur. Gov. Lab. 35: 59. 1905. 
Leaves and inflorescence like those of A. 
angustifolia ; pedicels up to 4 mm. long; calyx 
more than 3-3.5 mm. long and about 2.5 mm. 
broad, the calyx tube 1. 2-2.9 mm. long and 
2.2-3.2 mm. broad, the calyx lobes densely 
tomentose outside and inside; corolla tube 4- 
4.7 mm. long, varying from glabrous to densely 
pubescent outside; corolla lobes oblong, (2.5-) 
3.7-4. 1 mm. long and 1. 4-2.9 mm. broad, vary- 
ing from glabrescent to sparsely pubescent, 
