74 xcviii. ACANTHACE/f: (clarke). [Bysckoriste. 



5. D. tubicaljntj O. B. Clarke. Crisped-hairy, woody, branched. 

 Leaves J- J by J in., ovate to elliptic. Flowers axillary, 4-1 together 

 in condensed cymes. Calyx J in. long, divided J the way down, hairy 

 within and without; cystoliths obscure; otherwise as D. radicans. — 

 GaJophat}£s radicans (partly), S. Moore in Journ. Bot. 1880, 197. 



Iiower Guinea. Angola, Welwifsch, 5055 ! Huilla, Antunes, 166 ! 167 ! 

 Pungo Andongo, Mechow, 65! Malange, Buchner,f)9\ 



Appears to be an erect, very woody undershrub, in habit unlike D. radicans. 



fi. D. cunenensis, C. B. Clarke. Sparingly hairy. Leaves up to 

 Ij by 1 in. (exclusive of petiole -J in. long), obovate, truncate, narrowed 

 into the petiole. Flowers axillary, 3-2 together or often solitary. 

 Calyx J in. long, divided more than |- way down ; tube 5-angular, very 

 sparsely hairy, with numerous large conspicuous cystoliths ; otherwise 

 as D. radicans. 



Iiov^er Guinea. Angola : Mulondo, on the River Cunene, Newton ! 

 This has the habit of D. radica^is, and may be a wet-forest form of it. 



7. D. multica-ulis, 0. Kuntze, Rev. Gen. 486. Branches many, 

 16 in. long, rather stout, hairy; leaves up to 2 by J in. Stamens 4, 

 subsimilar ; anthers tailed. Ovary with 2 ovules in each cell. Capsule 

 narrow-cylindric (not clavate), 4-seeded ; otherwise as D. radicans. — 

 Lindau in Engl. & Prantl, Pflanzenfam. iv. 3B. 302, and in Engl. 

 Pfl. Ost-Afr. C. 3G7. Dipteracanthus dejectus /3, Neesin DC. Prod. xi. 

 125, partly; A. Rich. Tent. Fl. Abyss, ii. 142. Calophanes multicaulis, 

 T. Anders, in Journ. Linn. Soc. vii. 23. Ruellia multicaulis^ Hochst. ex 

 A. Rich. I.e. 



Wile Xiand. Abyssinia : Tigre ; near Adowa, on Mount Sholoda, Schimper, 

 43 ! and on Mount Semayata, 8400 ft., Schimper, 484 ! 



Except by the stouter straighter stems and larger leaves, this hardly differs from 

 D. radicans. 



8. D. nobilior, C. B. Clarke. Sparingly shortly hairy, branches 

 3 J ft. long, stout, straight, little-divided. Leaves If by |-1 in. (exclu- 

 sive of petiole \-\ in. long), slightly crenulate ; tip triangular, often 

 subacute. Cymes many, distant, dense, axillary. Calyx nearly J in. 

 long, sparingly pubescent, divided less than half-way down ; teeth 

 lanceolate, somewhat wide at the base. Corolla less than J in. long. 

 Capsules f in. long, erect, stouter than those of D. radicans; otheiwise 

 as D. radAcans. — D. HildehrandMi, Lindau MS. in Hoist, Exs. 3204a. 



IjO'wer Guinea. Angola: Pungo Andongo, Welwitsch, ol07 I 5158! 

 XMCozamt). Bist. German East Africa : Usambara ; Duga, Hoist, 3204a ! 

 Welwitsch (5158) has small flowers and cannot be united with D. Hildehrandiii, 

 and with this the other examples (without flowers) cited match. 



0. D. nudanthera, C. B. Clarke. Scabrous; branches 8-14 in. 

 Leaves 1 J by J in., lanceolate, subacute at both ends, hispid ; petiole 

 0-\ in. long. Cymes close, axillary. Calyx J in. long, divided about 

 J way down ; lobes lanceolate, acute, hispid ; tube nearly glabrous 



