i^GO xcviii. ACANTHAC'E.K (rLAUKE), [JJicHptei'a. 



12. D. angolensis, *S'. Mocn'e in Journ. Bot. 1880, 3G2. Stem 

 G-angulai-, glabrous or in places hispid. Leaves IJ by | in., ovate- 

 lanceolate, minutely hispid or glabrate ; petiole | in. long. Heads 

 terminal and axillary, ovoid ^-1 in. diam. Two bracts of the 

 spikelet § in. long, obovate-lanceolate, apiculate, slightly pubescent or 

 nearly glabrate (margins thinly ciliate), somewhat coriaceous. Calyx 

 I in. long. Corolla | in. long. Filaments glabrous; one anther-cell 

 completely above the other. 



Ziower Guinea. Angola : Golungo Alto and Bumba, 3000-7500 ft., TFelwifsch, 

 5116, 5132 ! 5168 ! Huilla, Antunes, 142, 179 ! 



Tliis is very close to D. umbellata, Jass. ; but the heads are much less hairy than 

 in any example of that species. 



13. D. colorata, C. B. Clarke. Angles of branches G, patently 

 hispid. Leaves up to 2 by 1^ in., ovate, acute, sparsely hispid, base 

 rounded or sometimes subcordate : petiole ^in. long. Heads terminal 

 and many axillary, ovoid, |-1 in. in diam. Tv/o bracts of the 

 spikelet }j by ^ in., lanceolate, mucronate, dark-brown or purplish- 

 brown (even before the expansion of the corolla), with spreading white 

 hairs. Corolla J in. long. Filaments hairy ; one anther-cell completely 

 over the other. Pistil glabrous but for a few scattered hairs on the 

 style. 



Nile Iiand. British East Africa: Raomi River, 7000 ft., Scd/t-EUiot, 6766! 



Mozamb. Bist. British Central Africa : Nyasaland : Nyika Plateau, 6000- 

 7000 ft., Whyie! 



Tlie brown or purple-brown bracts give tliis plant a marked look, but it is very 

 near D. umbellata. 



14. D. LeonotiSy Dalz. ex C. B. Clarke in Hook. f. Fl. Brit. Ind. 

 iv. r)")^. Stems G-8-angular, pubescent. Leaves up to o by 1 in., 

 elliptic lanceolate, pubescent. Heads globose, dense, axillary and 

 approximated towards the ends of the branches. Two bracts of the 

 spikelet J-^ by xV~iV ^^-^ lanceolate, o-nerved, pubescent. Corella 

 exceeding | in. in length. Filaments glabrous; one anther-cell com- 

 pletely above the other. 



Mozamb. Dlst. British Central Africa : Nyasaland : Blantyre, very plentiful 

 on the banks of streams and in shady places, Buchanan, 127 1 near Sekwere Village, 

 Kirk ! and without precise locality, Buchanan, 568 I 



Also in India. 



In the Nyasaland example.?, the plants are rather stronger, the leaves more hairy, 

 the heads larger than in the Bombay examples ; but the differences hardly suffice to 

 characterise a geographic form. 



1"). D. nilotica, C. B. Clarke. Plants 4-8 in. long; branches 

 angular, pubescent. Leaves up to 2 by | in., elliptic-oblong, hardly 

 acute, minutely hairy ; petiole J in. long. Heads dense, small (hardly 

 I in. in diam.), terminal, or the axillary heads mostly peduncled (ter- 

 uiinal or shortened lateral branches) ; floral leaves linear-oblong. Two 

 bracts of the spikelet \-\ in. long, narrowly obovate-oblong, hairy. 

 (Jalyx hardly J in. long. Corolla j in. long ; lips unusually broad. 



