308 MR. SPENCER MOORE ON THE 
andrecium are peculiar ; possibly this is not a constant feature 
of the species. 
CANTHIUM ABBREVIATUM, S. Moore (Plectronia abbreviata, 
K. Schum., in Engl. Jahrb. xxviii. (1899) 73). 
In thickets near Malange after the queimados (forest fires). 
Flowers greenish white; lobes of limb spreading and reflexed 
at time of flowering. 
C. LANCIFLORUM, Hiern, in Fl. Trop. Afr. iii. 146. 
Angola, Malange, in thickets always in colonies of about half- 
a-dozen specimens ; Gossweiler, 1288 & 1238 B. 
A. tree 20 feet high; leafless at time of flowering. Flowers in 
July ; young fruits in August. 
CANTHIUM OPIMUM, sp. nov. Frutex humane altitudinis vel 
altior, ramis validis obscure applanatis cortice cinereo denso 
obductis, foliis amplis petiolatis ovatis vel ovato-oblongis leviter 
cuspidatis obtusis basi cuneatim angustatis sæpe obliquis margine 
leviter undulatis vel aliquantulum undulato-crenulatis utrobique 
glabris, stipulis deorsum late triangularibus in partem attenuatam 
longam angustatis intus villosis diuseule persistentibus, floribus 
mediocribus in panieulis pedunculatis axillaribus multifloris 
quam folia brevioribus dispositis, braeteis linearibus quam 
pedicelli puberuli sepissime brevioribus, calycis tubo (ovario) 
late turbinato obscure puberulo limbo tubum paullo excedente 
9- (raro 4-)dentato glabro, corolle extus glabre tubo calycem 
bene excedente infundibuliformi faucibus dense villosis lobis 5 
(raro 6) lineari-laneeolatis obtusiuseulis tubum aquantibus, 
staminibus ore insertis, antheris subsessilibus anguste ovato- 
oblongis brevissime apiculatis, disco glabro, stylo breviter 
exserto glabro, stigmate mitriformi apice bifido longitrorsum 
sulcato. 
Hab. Angola, Kahalla near Malange ; Gossweiler, 1239. 
Planta “ 5-8-ped.” alta sec. cl. detectorem. Rami 07-08 em. 
diam. Folia 10:0-20:0 em. long., 6°0-7°5 em. lat., in sieco supra 
olivaceo-fusca subtus viridia; cost: secundaria 7, apertissime 
arcuate, satis pingues, ut costule laxe reticulate utrinque 
perspieum ; petioli crassiusculi, l:5 em. long. Stipulæ 0'7 em. 
long. Panicule ter dichotome, 30-40 em. long., 3:0 em. diam. 
Bracteæ modice 0°2-0°3 em. long., ultime 0'1-0°15 em. Pedicelli 
raro 065 cm., solemniter 0:2-0*4 cm. long. Calycis tubus 
