140 
5(1). Leaf blades markedly spatulate, rounded 
at apex, principal lateral nerves 20 
to 35 pairs. Malaya 6 
Leaf blades elliptic, narrowed or acum- 
inate at apex 8 
6(5). Inflorescence loosely cymose, sparsely 
flowered, glabrous; pedicels long, up 
to 13 mm. long; corolla lobes large, 
7 to 12 mm. long, 4 to 5 mm. broad; 
follicles glabrous 7. A. spatulata 
Inflorescence with numerous flowers 
very closely crowded, puberulent:; 
pedicels very short, up to 3 mm. long; 
corolla lobes 3 to 5 mm. long, about 
2 mm. broad, follicles puberulent 7 
7(6). Petioles 0 to 0.7 cm. long 
6. A. pneumatophora (typical) 
Petioles about 2 cm. long 
6a. A. pneumatophora var. petiolata 
8(5). Inflorescence in rather closely flowered 
cymes, puberulent; calyx lobes puber- 
ulent outside; leaf blades 3 to 7 cm. 
broad, principal lateral nerves 40 to 
100 pairs. Malaya 5. A. angustiloba 
Inflorescence in loose cymes, glabrous; 
calyx lobes glabrous outside; leaf 
blades narrow, 1 to 3 cm. broad, 
principal lateral nerves 35 to 50 
pairs. Australia-New Guinea 
8. A. actinophylla 
Section Blaberopus (A. DC.) Benth., in 
Benth. and Hook., Gen. PL 2: 705. 1876. 
Blaberopus A. DC, Prod. 8: 410. 1844. 
Subgen. Blaberopus King and Gamble, in 
Jour. As. Soc. Beng. 74(2): 435. 1907 
{in clavis). 
Shrubs, sometimes dwarf; leaves 3- to 6-ver- 
ticillate, acuminate and finely pointed at apex, 
not markedly pale beneath, not microscopically 
papillose, the lateral nerves numerous, close, 
finely raised-striate on upper surface, lightly 
arcuate, joined by a fine marginal nerve, the 
transverse veins hardly showing; corolla tube 
densely bearded with moniliform hairs at throat; 
corolla lobes with left margins overlapping; 
anthers located at throat of corolla (below the 
throat in A. Curtisii ) , comparatively large (over 
1.4 mm. long), the pollen grains much larger 
than in other sections (about twice as large or 
45-60/a), the filaments attached manifestly 
above middle of corolla tube; ovary apocarpous, 
PACIFIC SCIENCE, Vol. Ill, April, 1949 
the disc manifest, with two conspicuous lobes 
opposite sutures of ovary; seeds a little nar- 
rowed but not acuminate at ends, long-ciliate at 
ends and often truncate-erose, faintly mem- 
branous-margined particularly at ends, sparsely 
pubescent on faces; placental scar short. 
Type species. — In proposing this section 
Bentham (1876) cited the genus Blaberopus 
A. DC. in synonymy and referred to the illus- 
trations Wight Ic. t. 436 and Lodd. Bot. Cab. 
t. 1180. These illustrations are of A. venenata, 
which is .the earliest species representing Bla- 
beropus. The type of § Blaberopus is therefore 
A. venenata R. Br. 
, 
Key to Section Blaberopus 
1. Calyx lobes ciliate 2 
Calyx lobes not ciliate, not acuminate; 
follicles not stipitate; leaves 5 to 12 
cm. long, glabrous.. : 8 
2(1). Calyx lobes greatly attenuate and finely 
acute at apex; leaves sessile or almost 
so, hispidulous beneath or at least 
scabridulous on midrib; corolla lobes 
3 to 6 mm. long, ciliate; corolla tube 
about 1 cm. long; follicles not stipi- 
tate 15. A. yunnanensis j 
Calyx lobes not acuminate; leaves mani- 
festly petioled; corolla lobes not cili- 
ate - 3 
3 ( 2 ). Follicles with slender stipes (stipes 1.5 
to 3.0 cm. long), somewhat fusiform, 
6 to 13 cm. long, 6 to 7 mm. diam- 
Foilicles not stipitate, slender cylindric, 
10 to 14 cm. long, 3 to 4 mm. diam- 
eter; corolla lobes 6 to 18 mm. long.. 7 
4(3). Corolla lobes short, 2 to 3 mm. long; 
corolla tube about 1 cm. long; 
stigma-apiculi long and sharp 5 
Corolla lobes long, 12 to 20 mm. long; 
corolla tube 2 to 3 cm. long; stigma- 
apiculi short and blunt 6 | 
5(4). Leaves beneath and inflorescence pubes- 
cent with short spreading hairs. 
Himalaya ....11. A. Sebusi (typical) 
Leaves and inflorescence glabrous. Yun- 
nan 11a. A. Sebusi var. szemaoensis 
6(4). Leaves and inflorescence glabrous 
9. A. venenata (typical) . 
Leaves beneath and inflorescence pubes- 
cent with short spreading hairs 
9a. A. venenata var. pubescens 
