558 
CVI. ACANTHACE^E. 
[Nelsonia. 
2. NELSONIA, R. Br. 
An ascending hairy herb. Leaves sub-equal. Flowers small in 
small dense spikes. Bracts spiral or alternate. Calyx 2-lipped. 
Corolla-tube slender; limb 2-lipped. Stamens 2. Ovary 2-celled; 
ovules 8 in a cell arranged in two rows on a double placenta. 
Capsule ovoid conic with 8 to 16 seeds, no retinacula. Species 
3 or 4, tropics. 
(1) N. campestris R. Br. Prodr. 481; Clarke , l.c. 633. 
Base creeping, ascending to 1 ft. and branching at top. Leaves 
oblong-ovate, nerves at least hairy, 2 in. long by 1 in. wide; 
petioles -75 in. long or less. Spikes *5 in. long on axillary, short 
branches with small sessile leaves. Bracts ovate acute, all white 
hairy. Corolla light blue and upper edge of lobes, middle purple 
brown violet, *15 in. long. Capsule -15 in. long. Hab. Open 
heathy country in the north and east coast, Pahang, Pekan. 
Penang, Balik Pulau (Deschamps); Pulau Betong (Curtis). Kedah, 
Alor Sta. Lankawi. Setul heath. Perlis, Tebing Tinggi (Ridley). 
Distrib. Africa, Burma, India, Australia. 
3. STAUROGYNE, Wall. 
Herbs or shrublets, base usually creeping, hairy. Leaves 
opposite, petioled. Flowers terminal or axillary in upper axils in 
racemes simple or panicled. Bracts wider than sepals. Sepals 
free nearly to base narrow, unequal, one larger than the other. 
Corolla-tube base narrow dilate upwards; lobes short, round, 
white or dark brown purple. Stamens 4, didynamous. Ovary 
oblong; style long, 2-branched. Capsule oblong, base ovoid acute, 
2-celled, 2-valved. Seeds 12 to 20 in rows on the carpel edges. 
No retinacula. Species 50, most in Indo-Malaya, 10 in Brazil. 
Sepals awned with a long bristly point; spikes 
dense. 
Spikes ovoid, 1 to 2 in. long; leaves 2 in. long 
Spikes oblong, 1 to 2 in. long;- leaves 4 to 5 in. 
long. 
Spikes several up to 3*5 in. long; sepals and 
bracts lanceolate ..... 
Spikes 2 to 3 in. long; sepals with bristly awns 
longer than corolla ..... 
Spikes 4 to 10 in. long; sepals with very long 
awns, glabrous ...... 
Spikes 4 to 10 in. long; sepals similar but hairy . 
Sepals lanceolate acute. Racemes laxer. 
Racemes dense nodding, 1 to 3, 3 in. long, thick . 
Raceme lax few-flowered terminal erect 
Racemes simple or panicled very long; flowers 
distant, very many ..... 
Racemes usually panicled, short; bracts broad; 
leaves round ...... 
Sepals blunt, broad, hairy; leaves elliptic blunt 
(1) S. setigera 
(2) S. lanceolata 
(3) S. malaecensis 
(4) S. angustifolia 
(5) S. Kingiana 
(6) S. Iongifolia 
(7) S. comosa 
(8) S. pauper 
(9) S. lasiobotrys 
{10) S. Griffithiana 
(n) S. arcuata 
