518 DR. O. STAPF—PLANTA NOV.E 
Oldenlandia dolichantha, Stapf, sp. nov.; ab altera specie 
huius sectionis, O. rotate, Baker, foliis multo latioribus, corolla 
multo majore ore villosa distincta. 
Herba annua, erecta, ad 40 em. alta, plerumque glabra; caulis 
quadrangularis vel anguste quadrialatus, internodiis 15-4 em. 
longis, ramis nonnullis evolutis ad vel ultra 15 em. longis, aliis 
brevissimis ad foliorum angustorum fascieula redactis. Folia 
sessilia e basi lata rotundata lanceolata vel linearia et tune inter- 
dum in petiolum attenuata, acuta, 2:5-6 cm. longa, 2-10 mm. 
lata, herbacea, patula vel deflexa, obscure nervosa; stipule ad 
commissuram brevem membranaceam parce fimbriatam redacte. 
Flores axillares, sessiles, solitarii vel 2-3-nati in caulis dimidio 
superiore. — Jeeceptaculuin turbinatum, 3 mm. longum. Calyx ad 
fere basin 4-partitus, segmentis lineari-subulatis 7-8 mm. longis. 
Corolla hypocrateriformis, alba; tubus tenuis, interdum ultra 
10 em. longus, medio vix 1 mm. diametro, sub limbo infundi- 
buliformis et hie albo-papillosus, intus ore pilosus; lobi 4 
lanceolati, acuminati, 9-10 mm. longi. Antheræ sub ipso ore 
sessiles, oblongz, utrinque acute, 5-6 mm. longs. Ovarium 
vertice conico ; stigma clavatum, vix 2-lobum, exsertum. | Capsula 
ellipsoideo-ovoidea, 4-costata, apice dentibus 4 angustis 1 mm. 
longis dehiscentibus. Semina numerosa, oblique ovoidea, sectione 
transversa obtuse 3-angulata vel fere orbiculari, levissima, 
0*6 mm. longa. 
Nile Province, Dawe, 945. 
This is a very remarkable plant. The affinity with Oldenlandia 
rotata, Baker, is quite evident ; but a elose examination of the 
genus Oldenlandia wil probably result in the breaking up of 
the genus into several genera, one of which would be Cono- 
stomium. As it stands at present, it includes plants which differ 
considerably not only in general appearance, but more particu- 
larly in the structure of the fruits and seeds. The flowers of 
O. rotata are distinctly heterostylous. The corollas of the 
macrostylous form have a slightly larger limb with broader lobes 
and a very short funnel-shaped widening at the base, the stigma 
tips just reaching to where this widening begins, whilst the 
anthers surround the base of the slender stigmatic lobes. In 
the brachystylous form the stigma-tips are about 6 mm. below 
the mouth of the corolla-tube, which is scarcely widened and 
from which the upper half of the sessile anthers are exserted. 
On the other hand, all the flowers of O. dolichantha which I 
examined were alike and as described above. 
