76 ACANTHACEX (Clarke). [ Adhutoda. 
Mostly large or stout leafy shrubs ; the inflorescence terminal, of many flowers 
collected in compound oblong or capitate heads; corolla rather broad with a 
short tube, white, rose- or purple-spotted, the posticous subentire lip arched ; 
capsule large stout; seeds scabrous, flattened. 
A genus of 8 species, in the warm parts of the Old World, very indistinctly 
diagnosed from Justicia ; but forming « natural group, usually recognizable from 
Justicia by one or other of the marks above given. As to the distinction in the 
pollen, regarded as decisive by Lindan, there are very many species referred by 
him to Justicia in which the rows of tubercles are very obscure, and in several, as 
in A, natalensis below, I cannot see a trace of them. 
Bentham, unwilling to multiply genera, where the distinctions between them 
are so unsatisfa tory, has sunk Duvernoia in Adhatoda. The whole structure of 
the calyx in Duvernoia is so unlike that of any other Adhatoda, that I think the 
genns might be well maintained, 
Subgenus 1. Eu-ApHaropa, Calyx 5-partite to the base ; segments linear- 
lanceolate, subulate, imbricated in the bud. 
Leaves broadly-elliptic, hairy  .., we bee ... (1) natalensis. 
Leaves narrowly-elliptic, glabrate ts fa. .. (2) Andromeda, 
Subgenus 2. Duvervora. Calyx 5-fid hardly half-way 
down, splittipg into 5-2 narrow triangular lobes; 
segments broad-triangular, rigid, glabrous... +» (3) Duvernoia, 
1, A. natalensis (Nees in DC. Prod. xi. 391); a stout hairy 
shrub; leaves 21 by 1 in., elliptic, narrowed at either end ; petiole 
0-§ in. long ; inflorescence terminal, a condensed panicle 2 by 1 in.; 
flowers numerous ; bract $ by 3 in.; bracteoles 2 by 7, in. ; sepals 5, 
x by yy in., linear-subulate, softly hairy ; coruila 2 in. long ; tube 
short, broad; posticous subentire lip arched ; one anther-cell slightly 
lower than the other, with a very short tail ; pollen shortly ellipsoid, 
longitudinally banded, without tubercles ; ovary densely hairy; 
capsule 1 by tin., stout, 4-seeded. Gendarussa densiflora, Hochst. 
in Flora, 1845, 71. Justicia natalensis, T, Anders. in Journ. Linn. 
Soc. vii. 38; Lindau in Engl. § Prantl, Pflanzenfam. iv. 3B, 349, 
Duvernoia trichoealyx, Lindau in Engl. Jahrb. xxii. 122. 
KaLauari REGION: Transvaal; Sanderson / 
EASTERN ReGion: Natal; hills near Pietermaritzburg, 1000-2090 ft., 
Krauss, 453! Inands, Wood, 174! 304! and without precise locality, Sanderson ! 
Sutherland ! 
Duvernoia trichocalyx (collected by O, Kuntze at Durban) has not been seen, 
The description of Lindau agrees with thut of A. natalensis, except that the 
leaves are said to be glabrous, 
2. A. Andromeda (C. B. Clarke) ; branches 6-12 in. long, rather 
stout, minutely hairy ; leaves 13 by 2 in., nar1owly elliptic, glabrate, 
narrowed at the base, subsessile ; flowers many in a condensed 
terminal panicle 2 by 1 in.; bract 1 by 2 in.; bracteoles 4 by jin. ; 
sepals nearly } by !; in., linear-subulate, hairy; corolla % in. long, 
white with rose spots ; tube very short, broad ; posticous subentire 
lip arched; one anther-cell slightly below the other, obscurely 
mucronate at the base; pollen ellipsoid, longitudinally banded, 
without tubercles; ovary minutely densely pubescent, Duvernoia 
Andromeda, Lindau in Engl. § Jahrb. xx. 42, and in Engl. & 
Prantl, Pflanzenfam, iv. 3B, 339. 
