56-4 XCVII, PEDALINE& (STAPF). [ Ceratotheca. 
Kenyon, 8! Likoma Islands, Johnson ! between Kondowe and Karonga, Whyte / 
Karonga, Scott / and without precise locality, Whyte ! Buchanan, 1238! Shesheke, 
on the Zambesi. Holub ! 
The length of the horns of the capsule varies considerably even in the same 
specimen, and they may be reduced to small sharp points or quite suppressed as is 
the case in some of the fruits of Whyte’s and Scott’s specimens from Karonga. 
These muticous or submuticous forms agree, however, in all other characters with 
typical C. sesamoides. According to Dawe this species is cultivated and used like 
Sesamum in the Acholi country. 
4. C. triloba, /. Meyer ex Bernh. in Linnea, xvi. 29. Stems 
erect, up to 6 ft. high, simple or branched, obtusely quadrangular, 
pubescent to villous. Leaves polymorphic, lower long-petioled, from 
broadly ovate-cordate or almost rounded to broadly triangular and 
3-lobed with the lateral lobes spreading, 14-6 in. long and _ broad, 
coarsely crenate, more or less pubescent to subvillous, particularly below ; 
upper leaves narrower, shortly petioled, passing into the ovate-lanceolate 
or lanceolate, sparingly crenate or entire bracts; lower petioles 2-5 in. 
long. Flowers opposite in a long loose raceme up to | ft. long; 
pedicels very short. Calyx 4-3 in. long, densely hairy ; segments 
lanceolate. Corolla lilac with purple streaks in the throat and on the 
lowest lobe, 2-3 in. long; lowest lobe ovate, 2-3 lin. long. Capsule 
8-11 lin. long, 24 lin. broad, loosely pubescent to subvillous; horns 
about 24 lin. long, much compressed at the broad base. Seeds slightly 
over 1 lin. long, margins smooth, faces wrinkled.— Bot. Mag. t. 6974 ; 
Stapf in Dyer, Fl. Cap. iv. ii. 462. C. lamiifolia, Engl. Jahrb. xix. 
156. Sporledera triloba, Bernh. l.c. 42; DC. Prodr. ix. 252; Gard. 
Chron. 1887, ii. 492, fig. 99. S. krausseana, Bernh. |.c.; DC. Le. 
253. Sesamum lamiifolium, Engl. Jahrb. x. 256. 
Mozamb. Dist. Bechuanaland: Kalahari Desert; Mamunwe, Lugard, 241! 
Bamanguato Country ; Shoshong, Holub! Rocky Shasha River, Holub! banks 
and islands of Matengwe River, Holub, 1283! Matabeleland: Buluwayo, Rand, 
379! and without precise locality, Elliott! Mashonaland: between Umtali and 
Salisbury, Hon. Mrs. Evelyn Cecil, 52! Manica, Bryce / 
Also in South Africa. The whole plant has a strong unpleasant odour like that 
Hyoscyamus niger. 
8. PRETREOTHAMNUS, Engl. Jahrb. xxxvi. 228. 
Calyx small, 5-partite; segments lanceolate-linear. Corolla 
obliquely campanulate ; limb oblique, porrect, subbilabiate; lowest lobe by 
far the longest. Stamens didynamous, inserted low down in the corolla 
tube, not conniving ; filaments slender, filiform ; anthers dorsifixed, cells 
parallel, dehiscing longitudinally. Ovary 4-celled (2-celled completely 
divided by a spurious septum ?); ovules 3 in each division, superposed. 
Fruit unknown.—A small shrub densely glandular-hairy in the young 
parts. Leaves coarsely sinuate-dentate. Flowers rosé-coloured, solitary 
in the axils of the leaves on slender pedicels. 
Species 1, endemic. 
