Tas. 8165. 3 
OLDENLANDIA DOLICHANTHA. 
East Tropical Africa. 
RupiacEaE. Tribe HEDYOTIDEAE. 
OLDENLANDIA, Linn.; Benth, et Hook. f. Gen. Plant. vol. ii. p. 58. 
Oldenlandia dolichantha, Stapf in Journ. Linn. Soc. vol. xxxvii. (1906), 
p. 518; affinis 0. rotatae, Baker, a qua foliis multo latioribus et corolla 
multo majore ore villosa distincta. 
Herba annua, erecta, ad 40 em. alta, plerumque glabra; caulis quadrangularis 
vel subalatus, ramis nonnullis ad vel ultra 15 cm. longis, aliis ad foliorum 
fasciculos reductis. Folia sessilia, e basi lata rotundata, lanceolata vel 
linearia et tunc interdum breviter petiolata, acuta, 2°5-6 cm. longa, 
2-10 mm. lata, patula vel deflexa; stipulae ad commissuram brevem 
membranaceam parce fimbriatam redactae. Flores axillares, sessiles, 
solitarii, vel 2-3-nati. Receptaculum turbinatum, glabrum. Calycis seymenta 
4, lineari-subulata, 7-8 mm. longa, maturitate haud aucta, ualia. 
Corolla hypocrateriformis, alba; tubus tenuis, ad 10 cm. longus, vix 1 mm. 
diametro, sub limbo infundibuliformis et hic extus albo-papillosus, intus 
ore pilosus; lobi 4, lanceolati, acuminati, 9-10 mm. longi. Antherae sub 
ipso ore sessiles. Ovarium vertice conicum; stigma clavatum, vix 
2-lobum, exsertum. Capsula ellipsoideo-ovoidea, 4-costata, apice dentibus 
4 angustis dehiscens. Semina oblique ovoidea, laevissima, 0°6 mm. 
longa. 
This species was discovered by Mr. M. T. Dawe, Officer 
in Charge of the Forestry and Scientific Department of the 
Uganda Protectorate, in the Nile Province, Uganda, in 1905. 
It claims attention chiefly on account of the pure milk-white 
corolla-limbs which are almost an inch across and rest ‘on an 
unusually long and slendertube. On it and on O. rotata the 
writer established (l.c.) a new section (Conostomium) of. 
Oldenlandia, and pointed out at the same time that a closer 
examination of Oldenlandia may probably result in the 
breaking up of that genus into several genera, one of which 
would be Conostomium. Since then his attention has been 
drawn to a new genus, Pentanopsis, described by Dr. Rendle 
in 1898 and placed next to Pentas. Specimens of Pentanop- 
sis recently received at Kew from Somaliland leave no 
doubt as to the generic affinity of Pentanopsis and of Olden- 
landia, section Conostomium; but at the same time they 
confirm the view that they must either be placed in Olden- 
landia or next to it. So far the species figured here is the 
Novemsesr, 1907. 
