Isoglossa. | XVCII. ACANTHACE (CLARKE). 233 
terminal (and also on short lateral branches), $-14 by }-4 in., dense, 
almost strobilate, softly white hairy; bracts } in. long and broad, nearly 
orbicular. Sepals } in. long, linear. Corolla-tube ;},—-} in. long ; 
anticous lip 4 in. long, broad-elliptic, subentire; posticous lip }$ in. 
long, oblong, subentire. Anther-cells muticous, one completely over 
the other ; pollen globose compressed, with one stopple on each smooth 
face. Pistil of the genus. 
Nile Land. British East Africa: Mau, 7000-8000 ft., Scott-Elliot, 6769 ! 
16. I. grandiflora, C. B. Clarke. Stem pubescent, glandular 
upwards. Leaves up to 5 by 22 in., acuminate at either end, when 
mature minutely pubescent on the nerves beneath ; cystoliths numerous, 
small; petiole 0-4} in. long. Panicle terminal (leafy below), viscid with 
many-celled gland-tipped hairs ; branches 24 by $ in.; flowers in clusters 
on the branches ; lower clusters distinct, upper running into a dense 
spike; bracts } in. long, oblong. Calyx 4-4 in. long, divided nearly to 
the base; segments 5, subequal, linear, glandular-hairy. Corolla-tube 
3 in. long; lips 4 in. long, subentire, rather broad, curved. Stamens 2 ; 
filaments glabrous ; anther-cells linear-oblong, muticous, parallel, one a 
very little below the other; pollen lenticular, with one stopple on each 
smooth face. Pistil glabrous; style very shortly 2-fid. Capsule 
+ in. long, flattened; stalk short, thick; seeds 4, with rough oblong 
tubercles.—Lcteinanthus grandiflorus, T. Anders. MS. 
Mozamb. Dist. British Central Africa: Nyasaland; Shibisa (Chickwawa) to 
Tshinmuze, 2000-4000 ft., Kirk ! Mount Sochi, Meller ! 
The corolla and the anthers of this plant are nearly those of Adhatoda, Benth. 
(Duvernoia, Lindau). The habit, leaves, bracts, pollen, and seeds are those of 
Isoglossa. 
17. I, floribunda, C. B. Clarke. Upper leaves subsessile, minutely 
pubescent. Panicle 17 by 5 in., terminal, nearly leafless, viscid-hairy, 
repeatedly divided ; ultimate branches 3-4 in. long, on which the few- 
flowered distinct clusters form long one-sided spikes ; bracts ys in. long, 
linear. Calyx ,1,-} in. long; segments 5, linear, nearly free, viscous 
hairy. Corolla-tube } in. long, much inflated in the upper half; lips 
4 in. long, subentire, rather broad. Stamens 2 ; filaments glabrous ; 
anther-cells oblong, parallel, scarcely mucronate at the base, one slightly 
below the other 3; pollen globose compressed, with a stopple in the centre 
of either face. Pistil glabrous. Capsule } in. long, ellipsoid, com- 
pressed, 4-seeded; stalk cylindric, solid, short; placente not rising 
elastically from the base of valves; seeds rugose-tubercular 
- roxambe Dist. Portuguese East Africa: Lower Zambesi ; Shupanga, 
irk ! 
The very compound large leafless many-flowered panicles has caused this plant to 
be referred doubtfully in the Herbarium to Rhinacanthus, from which genus the 
shape of the corolla removes it. 
18. I. rubescens, Lindau in Engl. Jahrb. xx. 57. Stem quad- 
rangular, clothed upwards, as is the whole panicle, with hairs tipped by 
