Nelsonia. | XCVIII, ACANTHACEX (BURKILL), 29 
long. Corolla 2-2} lin. long. Capsule 2-3 lin. long.—Oliv. in Trans. 
Linn. Soc., xxix. 125. N. canescens, Nees in DC. Prod. xi. 67; 
A. Rich. Tent. Fl. Abyss. ii. 140. V. tomentosa, A. Dietr. Sp. Plant. 
ed. 2,i.419; T. Anders. in Journ. Linn. Soe. vii. 20; S. Moore, Journ. 
Bot. 1880, 196. ¥. brunelloides, O. Kze. Rev. Gen. Pl. 493; Lindau 
in Engl. PA. Ost-Afr. C. 365. WV. origanoides, Roem. & Schult. Syst. 
i. 173. Justicia canescens, Lam. Ill. i, 41. Acanthodium spicatum,. 
Acerbi ex Nees in DC. Prod. xi. 67. 
Upper Guinea. Senegal, Boivin, 416! Rousillon, 53! Senegambia, Heudelot, 
48! Island of St. Mary and Kingdom of Cayor, Leprieur (ex Nees); Gambia,. 
Brown-Lester, 48! Sierra Leone: near Freetown, Scott-Elliot, 5905! and without 
precise locality, Afzelius. Ashanti: Assin-Yan-Coomassie, Cummins, 191! Lagos, 
Millen, 75! Niger Territory: Nupe, Barter, 1159! Fernando Po, Barter, 2046 ! 
Mann, 253 ! 
Nile Land. Abyssinia: Tigre; near Jelajeranne, Schimper, 900! 1815! 
Quartin- Dillon & Petit / and without precise locality, Schimper, 803! Upper Senaar : 
Fazokl, Kotschy, 484! Sarad Mts., Lefevre / Bahr-el-Abiad, d@’Arnaud/ British East 
Africa: Mora Dist.; Neangara, Petherick! Wayo, Petherick! Mittuland ; Ngama, 
Schweinfurth, 2776! Mvolo, Schweinfurth, 2788! Niamniam; Nabambisso River, 
Pehaveinfurth, 3004! Ugauda, in deep shade, Scott-Elliot, 7345! Ruwenzori, Scott- 
vot ! 
Lower Guinea. Corisco Bay, Mann, 1869! Gaboon: Munda ; Sibange Farm, 
Soyaux, 295! Angola, Welwitsch, 5212 ! 5213! 5215! 5216! 5217! 
Mozamb. Dist. German East Africa : Lake Tanganyika, Cameron! east shore 
of Lake Tanganyika, between Karema and Ujiji, Scott-Elliot, 8330! Khutu ; Mbwiga,. 
1290 ft., Speke & Grant! Portuguese East Africa: Zambesi Delta; between Mam- 
bucha and Vicenti, Scott! British Central Africa: Nyasaland ; Fort Hill, 3500- 
4000 ft., Whyte! Manganja Hills, Meller! Shibisa (Chikwawa) to Tshinmuze, 2000- 
ary ft., Kirk ! Zomba, 2500-3500 ft., Whyte! and without precise locality, Buchanan, 
5. SYNNEMA, Benth. in DC. Prodr. x. 538. 
Sepals narrow, often unequal. Corolla nearly straight ; tube shorter 
than the calyx; limb long, 2-lipped, twisted to the left in bud; palate 
transversely plicate-rugose, purple-rose and white. Stamens ? or 4, the 
Posterior pair being smaller; anther-cells parallel. Ovary narrow; 
style sparsely hairy. Capsule narrow, with many seeds borne from the 
very base. Seeds small, ovoid, somewhat compressed, glandular- 
puberulous or glabrous ; retinacula minute, conical, soft, not curved.— 
Herbs, often viscid, aromatic. Leaves opposite, upper toothed, rarely 
entire, lower often pinnatifid or pectinate. Flowers in spikes or whorls, 
or 1~3 together in the axils of the leaves.—Cardanthera, Ham. ex Benth. 
& Hook. f. Gen. Pl. ii. 1074. Adenosma, Nees (not of R. Br.) in Wall. 
Pl. As. Rar. iii. 75; DC. Prod. xi. 67. 
A genus of about 10 species, of which two only occur in Africa ; the others are Indian. 
*PLASIANTHERA, Stamens2_ . . . . .  « 1. S. africanum. 
**Eusyynema, Stamens4 . . 2. S. brevitubum. 
1. S, africanum, 0. Aze. Rev. Gen. Pl. 500. Stem branched, 
13-2 ft, high; branches puberulous. Leaves of two forms, the lower 
stated to be submerged and pinnatifid, the upper sessile, linear-lanceolate, 
