Chetacanthus. | ACANTHACE® (Clarke), 19 
4087! Komgha Div.; Komgha, 2000 ft., Flanagan, 811! British Kaffraria, 
Cooper, 285! Gill! 
Centra Recion: Somerset Div.; Somerset East, 2600 ft., Bolus! Alexandria 
Div.; on the rocks of Zwartwater Poort, Burchell, 3377! 
Eastern RKeGion: Tembuland; near Bazeia, 2000 ft., Bawr, 273! Natal; 
in muddy places around Durban Bay, Krauss, 306! 
The type-specimen of Chetacanthus Persoonii, vas. a, Nees, inscribed by Nees’ 
hand, is Justicia protracta, T. Anders, Ruwellia setigera, Pers. Syn. ii. 176, 
another name for Ruellia aristata, Thunb. (Fl. Cap. ed. Schult. 479), was referred 
to the present plant by Nees in Linnea, xv. 357, and in DC. Prod. xi. 462. 
Ruellia setigera, Pers., had, however, 4 stamens, a point on which the old authors 
are much safer than the modern, and was therefore neither of the two. It may 
have been R. patula, Jacq. (otherwise not included by Thunberg). 
2. C. glandulosus (Nees in DC. Prod. xi. 462); stem and leaves 
pubescent ; calyx-teeth with many gland-tipped hairs, usually shorter 
than the corolla-tube ; otherwise as C. Persoonii, Nees. Schinz in 
Mém. Herb. Boiss. x. 63. C. Persoonti, Hochst. in Flora, 1845, 
72 partly. Eranthemum obovatum, var. b, E. Meyer in Drege, 
Zwei Pflanzengeogr. Documente, 134, 182. Calophanes Persoonit, 
T’. Anders. in Journ. Linn. Soc. vii. 23 partly. 
Coast Reeion: Port Elizabeth Div.; Port Elizabeth, Bolus! Albany Div. ; 
Fish River Heights, Hutton ? 
KaLaHarI Reeion: Transvaal; hills above Apies River, near Pretoria, 
Rehmann, 4249! Wonderboom Poort, Rehmann, 4512! 
Eastegn Re@ion: Griqualand East ; near Kokstad, 5000 ft., Tyson! Natal ; 
in muddy places around Durban Bay, Krauss, 380! near the coast, Wood, 1157! 
and without precise locality, Gerrard, 180! Delagoa Bay, Jwnod, 319. 
In this species, imperfect anther-cells with little or no good pollen occur ; in 
Rehmann, 4512, which contains flowers of every age, the anthers appear never 
to open, so that the plant is female. Similar imperfect anther-cells occur 
occasionally in C, Persoonit. 
8. C. Burchellii (Nees in DC. Prod. xi. 462); leaves up to 
3—] in. long, sparingly hairy, elliptic, lower with a subacute triangular 
tip ; calyx-teeth with rather long several-celled white spreading hairs ; 
otherwise as C. Persoonii, Nees. C. Burkei, Sonder in Linnea, xxiii. 
94, Calophanes Burkei, T. Anders. in Journ. Linn. Soc, vii. 24. 
Sourn AFrica: withont precise locality, Mudd ! 
Katauari Reaion: Orange River Colony; Thaba Unchu, Burke ! Transvaal ; 
Hooge Veld, at Trigards Fontein, Rehmann, 6707! near Lydenburg, Wilms, 
1196! Mac Mac Hills, Mudd! 
Eastern ReGion: Griqualand Hast; near Clydesdale, 2500 ft., Tyson, 2078! 
near Kokstad, 5000 ft., Tyson’ MacOwan Herb. Austr.-Afr., 1509! Natal ; near 
Gourton, 4000 ft., Wood, 3623! near Durban, 100 ft., Wood, 34! Inanda, 
Wood, 213! near the junction of the Tugela and Blaawkrantz Rivers, 2000- 
3000 ft., Evans, 669! Weenen County, 3000-5000 ft., Sutherland ! and without 
precise locality, Gerrard, 186! 
Nees describes this species as having the corolla-tube scarcely longer than the 
_ ealyx-teeth, as is the case in his specimen (collected by Burke, not by Burchell). 
But the length of the corolla-tube varies much in other examples, till in Gerrard, 
186, it is very nearly 1 in. long. 
4, C. costatus (Nees in DC. Prod. xi. 462); leaves 3—] in. long, 
elliptic or oblong, lower subacutely triangular at the tip, nearly 
glabrous, nerves prominent beneath ; calyx-teeth glabrous or very 
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