ADDENDA. 500 



1. Elytraria crenata, Vahl. De Wildeman and Durand have 

 described (Comptes-rendus 8oc. Bot. Belg. xxxviii. 42), under the name 

 Tubiflora paucisquamosa, an Elytraria which was sent to them by 

 Dewevre from Bania Lecoula, in the Upper Congo region, and by Calva 

 from Ciandayanga, in the Lower Congo region, which from their descrip- 

 tion seems to be the form of E. crenata named on p. 28. as distri- 

 buted through the Great Western forest region from Lagos to the 

 Gaboon River and eastwards to Niamniam Land. It does not appear 

 to be E. iimrginata, Vahl, but is the E. marginata of Beauvois, of 

 Nees, and of Hooker' (11. cc). Lindau (1. c.) applies the name Tuhi- 

 Jioi'a squamosa to it ; but then he unites it and the common South 

 Ameiiean species, to which Jacquin's name, Verbena squamosa (Hort. 

 Schoenb. i. 3, t. 5), obviously belongs. 



la. Hygrophila lindaviana, Bitrkill. Herb 20 in. high, more 

 or less hirsute. Stems quadrangular. Leaves of the main stem sessile, 

 lanceolate, auricled at the base, attenuate and acute at the apex, 3-7 in. 

 long, |-1 in. broad, the auricles 5 lin. long; smaller leaves stalked. 

 Flowers white or pale purple, in dense clusters in the axils of the leaves, 

 with thorns as in H. spinosa, which, however, are so short as to be 

 hidden by the bracts and calyces ; bracts and bracteoles lanceolate, 

 acuminate, ciliate-hispid ; spines J in. long. Calyx with the upper 

 sepal 1 in. long, the others shorter; the lower pair fused almost to the 

 tips. Corolla-tube about 1 in. long. Stamens unequal, with the tila- 

 ments of the lower pair broadened, each attached to the filament cf the 

 upper stamen of its side at the base. Capsule J in: long, 8-10-seeded, 

 elliptic-lanceolate. — Asteracantha lindaviana, De Wild, k Durand in 

 Comptes-rendus Soc. Bot. Belg. xxxviii. 100, and Plant. Thonner. Coniro). 

 39, t. V. 



Soutb Central. Congo Free State : Evanikoyo ; near Businga, Thonner. 



Very closely allied to H. spinosa, T, Anders., if truly distinct. The authors call 

 attention to the unusual nuniber of stopples (viz. four) which they observed in the 

 pollen. They describe the pollen as having about 20 lines running from pole to jjole, 

 and state that the pollen of H. spinosa differs in having fewer ; but this is not 

 always the case. 



IGa. Hygrophila rhodesiana, S. Mocre in Joum.Bot. 1900,201. 

 A low plant, springing up after being cropped down. Old stems (]uad- 

 rangular, scarcely 1 lin, in diam., erect, glabrous. Leaves linear, con- 

 spicuously ciliate with white hairs, upwards of \ in. long, ^ lin. broad, 

 acute, the midrib prominent below. Spikes very few-flowered, 1 or 2 

 flowers at each node ; bracts like the leaves. Flowers conspicuous, purple. 

 Calyx-lobes linear-subulate, ciliate, divided almost to the base, une(jua), 

 the longest J in. long, the others o lin. long, almost setaceous at the 

 tip. Corolla-tube as long as the calyx-lobes, !^uddenly widened into 

 the throat; lower lobes Ij lin. long and almost 2 lin. broad, upper 

 siraller. Stamens in two pairs, the filaments of those of each side 



