Adhatoda. | XCVIII, ACANTHACEE (CLARKE). 223 
4. A. tristis, Vees in DC. Prod. xi. 404. Herbaceous up to 4 ft. 
high ; innovations densely fulvous-hairy. Leaves 9 by 44 in., shortly 
acuminate, when mature pubescent on the nerves beneath, base tri- 
angular ; petiole 1-24 in. long. Spikes in the upper axils 6 by } in., 
interrupted at the base, not strobilate ; bracts scarcely 4 in. long, 
lanceolate ; bracteoles similar, smaller. Sepals 5, 4 in. long or more, 
linear. Corolla 3 in. long, purple. Filaments very hairy ; one anther- 
cell much lower than the other; base acute, hardly mucronate ; polien 
ellipsoid, longitudinally banded, with single rows of spots on each side 
of each stopple. Ovary shaggy; style hairy. Capsule more than 1 in. 
long, stalk $ in. long; seeds 4.— Benth. in Hook. Niger Fl. 484. 
Justicia tristis, T. Anders, in Journ. Linn. Soe. vii. 38. 
Upper Guinea. Cameroons: Bipinde, Zenker, 1043 ! Fernando Po, Vogel, 161! 
Mann, 165! 
3. A. robusta, C. B. Clarke. Shrub 10-15 ft, high, young parts 
densely rusty-tomentose. Leaves 10 by 4} in. ; nerves 17 pairs; petiole 
1} in. long. Thyrsus 9 by 4 in., nearly without floral leaves; flower- 
spikes 3 by 3 in.; bracts in the lower part of a spike distant, }—} in. 
long, obovate, shortly acuminate; bracteoles nearly as the sepals. 
Sepals }-1 by 4, in., oblong, acute, pubescent. Corolla 3—3 in. long, 
white. Filaments glabrous ; anther-cells at nearly equal height rounded 
at the base; pollen ellipsoid, with 2 longitudinal smooth bands with- 
out tubercles. Ovary very hairy. Capsule not seen.— Justicia robusta, 
T. Anders. MS. 
Upper Guinea. Fernando Po, 3000 ft., Mann, 634! 
This fine plant is closely allied in habit and characters to 4. Vasica, Nees, but 
differs in the loose, not strobilate, spikes and the smaller bracts and flowers, 
6. A. maculata, (. B. Clarke. Climber, 10-15 ft. high, innova- 
tions densely and minutely fulvous-hairy. Leaves up to 7 by 34 in., 
acute, when mature glabrate, base rounded or triangular ; petiole 
1-2 in. long. Spikes terminal, 3-4 by 2 in., interrupted, not strobilate ; 
bracts 4 in. long, lanceolate, puberulous. Sepals 5, subequal, { in. 
long, and upwards, linear-lanceolate. Corolla 1 in. long, white, purple- 
Spotted. Filaments glabrous ; 2 anther-cells at nearly equal height, 
rounded at the base; pollen ellipsoid, with 2 stopples, the longitudinal 
Smooth bands having a granular (scarcely spotted) band on each side 
the stopple. Ovary shaggy.—/usticia maculata, T. Anders. in Journ. 
Linn. Soc. vii. 38. Duvernoia Buchholzii, Lindau in Engl. Jahrb. xx. 
43, and in Engl. & Prantl, Pflanzenfam. iv. 3 B. 339, 
Upper Guinea, Fernando Po, Mann, 202! Cameroons: Quaqua River, 
Buchholz! 
Imperfectly known species. 
7. Duvernoia haplostachya, Lindau in Engl. Jahrb. xxiv. 324. 
Branches hairy. Leaves 4 by 2 in., ovate, narrowed at either end, 
airy on the nerves beneath; petiole } in. long. Spike terminal, 
simple, shorter than the leaves; rhachis pubescent ; flowers opposite ; 
