A S dad ME Wu c M E P. 
COUR A n Mino die Nea eR Dio, E (as 
DISSOTIS , MELASTOMACEJE (AUCT. COGNIAUX . 911 
In Africa australi ad Port Natal (Drége, Krauss n. 120, Gueinzius 
n. 137, Plant n. 13); in Transvaal (Dr. Rehmann); in Africa occi- 
dentali ad Malange (Mechow n. 343); in Africa tropica ad Ukudi 
(Grant). 
20. D. Angolensis; caule acute tetragono, brevissime stellato- 
hirtello; foliis sessilibus, basi subrotundatis, utrinque stellato-tomen- 
tosis, subtus non reticulatis; calyce obscure purpureo-violaceo, den- 
siuscule furfuraceo et brevissime subsparseque setuloso, lobis cum 
dentibus elongatis subulato-setaceis alternantibus. 
Caulis simplex, erectus, robustiusculus, 5-7 dm. altus. Folia rigi- 
diuscula, oblongo-lanceolata, 5-nervia, obtusiuscula, 4-5 cm. longa, 
l-1'/ em. lata. Flores in panieulas foliosas interruptas dispositi. 
- Bracteæ violaces, 6-9 mm. longs. Calycis tubus 6-7 mm. longus ; 
lobi triangulari-lanceolati, acuti, 5-6 mm. longi. Petala purpureo-vio- 
lacea, obovata, 1 '/, em. longa. Staminum majorum connectiva basi 
incrassata et obtusa. 
In Angola (Welwitsch n. 914 in hb. DC. et Haun.). 
IV. Flores 5-meri, paniculati vel racemosi; bractee deciduæ ; 
calycis lobi decidui. — Spec. 21-32. 
A. Calyx glaberrimus lzevisque. 
21. D. Welwitschii ; tota glaberrima ; foliis sessilibus, oblongo- 
lanceolatis, obtusiuseulis; panieulis submultifloris; bracteis amplis ; 
calycis lobis ovato-oblongis, apice rotundatis, cum setis simplicibus 
` elongatis alternantibus. 
Rami robusti, simplices, obtuse tetragoni. Folia erecta, pergamen- 
tacea, 8-12 em. longa, 2-3 '/, cm. lata, superiora satis breviora. 
Paniculæ 1 '/, dm. longæ ; pedicelli 2-10 mm. longi; bracteze scarios, 
late obovatze, 1 '/,-2 em. longs. Calycis tubus 8 mm. longus; lobi 6- 
7 mm. jlongi. Petala purpureo-violacea, late obovata, 2 cm. longa. 
Staminum majorum conneetiva infra loculos 7-8 mm. longo producta, 
basi bifida. 
In Angola (Welwitsch n. 917 in hb. DC. et Haun.). 
B. Calycis tubus setis crassis brevissimis inferioribus omnibus simplicibus 
sparse vestitus. 
22. D. Melleri (Hook. f.! ex Triana l. c. 58 et in Oliv. l. c. 453); 
