252 xcviii. ACANTHACE^ (clarke). [Ri/poestes. 



Leaves rather large. Bracts with some spreading white long hairs. The plant 

 resembles much the large-leaved forms of the West African S. verticillaris 

 (i.e. H. latifoUa, /3 Nees). But Hoist, 2265, from Usambara (marked H. verticillaris 

 by Lindau) appears the same as H. violaceotincta. 



18. H. tanganyikensiSy ('. B. Clarke. Inflorescences axillary and 

 terminal, very laxly panicled ; flowers mostly solitary (not clustered), 

 -^4- in. apart, white {Whyte). Two outer bracts to the spikelet J by 

 Y2 ill-) subequal, connate about J their length, linear-oblong, subspathu- 

 late ; otherwise nearly as H. verticillaHs. 



nXozamb. Dlst. British Central Africa: Nyasaland ; Tanganyika Plateau, 

 2000-3000 ft., Wk^fe ! Nyika Plateau, 6000-7000 ft., Whyte, 192 ! 



Imperfectly known species. 



11). H. grandifolia, Lindau in Engl. Jahrh. xx. 41). Stem glabrous. 

 Leaves up to 4^ by 24- in., pubescent on the nerves beneath. Two 

 outer bracts of the spikelet united f their length, exceeding J in. in 

 length, hairy, enclosing 2 flowers. 



Wile Iiand. Bongo, Schweinfurth, 2613. 



The detailed description by Lindau fits very well many of the larger examples re- 

 ferred as forms to H. iierticillaris, R. Br., as, for instance, to Schweinfurth, 1066, from 

 the White Nile ; but thougli in this 1066 there is a rudiment of the second flower in 

 the spikelet, I find no 2-flowered spikelets. 



The plant was not found at Berlin. 



56. RUNQIA, Nees ; Benth. et Hook. f. Gen. PI. ii. 1120. 



Corolla, stamens, pistil as of Justicia, sect. Betonica. Placentae in 

 ripe fruit rising elastically from the base of the capsule, throwing out 

 the seeds. — Spikes strobilate ;♦ bracts in 4 ranks (whereof 2 alternate 

 are sterile), much larger than the calyx, broad with prominently 

 scarious margins. 



Species 20, in the warmer parts of the Old World. 



Bentham describes the inflorescence, " primarial bracts superposed in pairs, 

 lower of each pair sterile, upper bearing a flower " ; which is correct but he places 

 the genus in his subtribe Diclipterece, to which he attributes "bracts 2 (or 4) val- 

 vately adpressed together, including one or several flowers." This definition applies to 

 Dicliptera, Peristrophe and Hypoestes, but cannot be made to apply to Rungia, 

 in which the inflorescence is as that of Jv.sticia, sect. Betonica (or of Ad haioda), 

 but with 2 ranks of bracts empty. 



Bracts f in. long . . . . . . . 1, it. grandis. 



Bracts \ in. long. 



Leaves acuminate, minutely pubescent . . . 2. R. paxiana. 



Leaves acuminate, glabrate . . . . . 3. i2. Bnettneri. 



Leaves obtuse, hispidulous . . . . . 4. i2. congoensis. 



1 . R. grandis, T. Andei's. in Journ. Linn. Soc. vii. 40. Herbaceous 

 up to 10 ft. high. Leaves G by 2|- in., minutely pubescent on the 

 midrib beneath, nearly glabrous ; petiole f in. long. Spikes terminal, 



