CVl. ACANTHACEiE. 
5&0 
[Gymnostachyum. 
cylindric, upper lip ovate, lower lip very short, blunt. Stamens 2, 
longer than upper lobe. Ovary cylindric pubescent; style long 
glabrous. Hab. Lankawi islands, Dayong Bunting (Robinson). 
This resembles G. diversifolium, but the flowers are only half as big. 
(4) G. pallens Clarke, l.c. 662. 
Rhizome long, woody. Stem -5 to 1 in. tall. Leaves broad 
ovate, tip sub-obtuse, nearly glabrous, shortly decurrent on petiole, 
wavy crenate above, densely punctate, lower surface pale green, 
4 in. long, 2-5 in. wide. Spike 3 to 4 in. long on a peduncle as 
long slightly branched minutely pubescent; flowers solitary. 
Calyx -125 in. long. Corolla *5 in. long, white. Capsule more 
than -5 in. long. Hab. Perak (Kunstler). 
Very rare. I have not seen it. 
(5) G. ceylanicum Am. and Nees, Hook. Comp. Boi. Mag. 
ii. 3x1. 
Stem short; leaves crowded at base, oblong undulate blunt 
narrowed to base, 3 in. long, 1 in. wide; petioles 1 to 1*5 in. long, 
winged narrowly above. Spikes several erect, 6 to 8 in. long, 
pubescent. Flowers solitary opposite or in long spikes in short 
cymes. Calyx *25 in. long, lobes linear hairy. Corolla-tube 
slender, -5 in. long, pink, lobes short, yellow, almost straight. 
Capsule *5 in. long. Hab. Lankawi (Curtis). Distrib. Ceylon. 
Curtis’s plant seemed absolutely indistinguishable from living plants 
from Ceylon. 
(6) G. simplicicaule Clarke, l.c. 663. 
Stem unbranched, rooting at base, erect part 7 in. tall, slightly 
pubescent. Leaves elliptic short, blunt,' narrowed at tip, base 
narrowed blunt, entire, glabrous except the inconspicuous nerves 
and midrib on back, 3 in. long, 1 in. wide; petioles -25 to *5 in. 
long. Panicle or spike terminal, 1 in. long; peduncle as long or 
shorter. Flowers few. Bracts ovate. Sepals -125 in. long, linear. 
Corolla -5 in. long, grey and yellow or purple, 2-lipped, glabrous. 
Hab. Perak, Sungei Rayah (Kunstler). Rare. 
(7) G. hirtistylum Clarke, l.c. 663. 
Glabrate; stem 1 ft. tall, rooting at base. Leaves equal 
elliptic acute, base broad cuneate; nerves 6 to 7 pairs; 4 in. long, 
2 in. wide; petioles 2 in. long. Inflorescence pubescent of 2 ter¬ 
minal, simple linear interrupted spikes ebracteate; peduncle 2-5 
to 1 in. long. Flowers in clusters of 1 to 2, opposite, lower pairs 
distant. Sepals hardly -125 in. long, linear. Corolla white, very 
small, tube short; style hairy. Hab. Perak (Kunstler). 
Very rare. I have not seen it. 
(8) G. magis-nervatum Clarke, l.c. 663. 
Herb 1 to 2 ft. tall, glabrous, rooting at base decumbent. 
