Revision of Genus Alstonia — MONACHINO 
177 
coriaceous, linear-lanceolate, 5-9 cm. long, 
about 0. 5-0.8 cm. broad, blunt at apex, glabrous, 
the lateral nerves about 30 pairs. Inflorescence 
lax, branches divaricate, pedicels about 6 mm. 
long; calyx 1.25 mm. long; corolla tube 2.25 
mm. long; corolla lobes oblong, 4 mm. long; 
anthers 0.3 mm. long. ( Compiled from original 
description and photograph.) 
Type.-— "Riv. Ngoye; Spermolepsis-Casuarina 
forest; 500 ft.; serpentine. 1009.” R. H. Comp- 
ton , New Caledonia. (British Museum.) 
Specimen examined. — Type (photo). 
The available data on A. saligna are not suffi- 
cient to place the species precisely. Affinity 
with A. Lenormandi is suggested. Moore notes, 
"In the flowers this much resembles A. Comp- 
tonii, but its smaller narrow willow-like leaves 
are very distinct.” 
38. Alstonia Comptonii S. Moore, in Jour. 
Linn. Soc, Bot., 45: 363. 1921. 
Small tree up to 7 m. high; branches stout; 
leaves opposite; petioles 1.5-5 cm. long; leaf 
blades thinly coriaceous, oblong-oblanceolate, 
large, 12-25 cm. long, 3-6 cm. broad, rounded 
to shortly blunt-acuminate at apex, glabrous, 
the lateral nerves numerous, 35-50 pairs. In- 
florescence ample, lax, and diffuse, the branches 
greatly divaricate, the pedicels long and slender, 
about 4 mm. long; corolla tube 2.25 mm. long; 
corolla lobes 4 mm. long; anthers 0.75 mm. 
long. (Compiled from original description and 
photograph. ) 
Type. — "Kuakue; scrub-forest; 200 ft.; ser- 
pentine. 953.” R. H. Compton , New Caledonia. 
(British Museum.) 
Moore notes, "The long narrow Rauwolfia- 
like leaves coupled with the very divaricate 
branches of the cymes affords an easy means of 
recognizing this plant.” 
SECTION DOUBTFUL 
39. Alstonia quaternata van Heurck & Muell. 
Arg., in Flora 53: 170. 1870. 
Branchlets stout (7-15 mm. diam.) ; leaves 
4-verticillate; petioles 2-4.5 cm. long; leaf 
blades elliptic, 8-16 cm. long, 2.5-4 cm. broad, 
rounded or obtuse at apex, gradually and 
strongly attenuate at base, glabrous, strikingly 
nitidous above, the margins involute, the lateral 
nerves horizontally spreading, rather straight, 
35-60 pairs, 1.5-3 mm. apart, the reticulation 
not manifest. Inflorescence closely crowded, the 
ultimate branches adpressed or ascending, pro- 
fusely bracteate (bracts deciduous), the pedicels 
very short; calyx lobes carnose, ovate, about 1.3 
mm. long and 1.6 mm. broad, obtuse at apex, 
entirely glabrous; corolla tube 5-5.4 mm. long, 
glabrous outside; corolla lobes very thick, cucul- 
late, oblong, 2.8-4. 1 mm. long, 1.7 mm. broad, 
glabrous without, pilose within the lower half 
and bearded at base; anthers 1.2- 1.4 mm. long, 
the filaments inserted at about one-third from 
base of corolla tube; style very short or not 
apparent; ovary characteristically sulcate longi- 
tudinally with about 10 sharp ridges, glabrous, 
(either of two carpels very close together or 
syncarpous ) ; ovules in two rows ( sometimes 
reduced to one row?) in each cell, relatively 
few. 
Type. — "Nova Caledonia ad Ponebo: De- 
planche 456 (in herb, van Heurck).” 
New Caledonia. — Deplanche 456 (type coll.; 
fl.; G, K); Schlechter 15578 (mt. near 
Oubatche; fl.; G, GH, K, L). 
This interesting species is outstandingly 
unique and cannot be placed satisfactorily in 
any section. It suggests § Dissuraspermum, 
affinity with A. Legouixiae. Discovery of the 
fruits should clarify its position. 
DOUBTFUL SPECIES 
A. angustifolia var. latifolia: see A. angus- 
tifolia. 
A. elliptica: see A. costata. 
Alstonia Godeffroyi Reinecke, in Engl. 
Jahrb. 25: 667. 1898. Type. — "Upolu: Letogo- 
Siuma-Kamm, 750 m. Apr. 1895 (483)” 
Reinecke, Samoa. Belongs to § Dissurasper- 
mum , but without the type I am unable to sug- 
