502 LXIX. RUBIACES. [Diodia 
limb 4-partite; the segments ovate-lanceolate, ciliate, somewhat 
puberulous, ;, in. long, nearly equal among themselves, more or 
less persistent, green; corolla funnel-shaped, 34, in. long; the 
tube nearly glabrous ; the lobes of the limb 4, somewhat puberu- 
lous inside, hairy near the tip outside, ovate, valvate in the bud, 
induplicate-hooded at the extreme tip, spreading or reflexed in 
open flower, ;'; in. long; the throat glabrous; stamens 4, 
exserted, ;, in. long, sub-erect, straight ; filaments about as long 
as the anthers, minutely puberulous: anthers linear-oblong ; style 
exserted, rather exceeding the anthers, minutely puberulous; 
stigma papillose, sub-capitate; fruit dry, apparently indehiscent, 
puberulous, about 4, in. long, besides the more or less per- 
sistent calyx-limb, 2-celled ; cells 1-seeded ; seeds fuscous, 74; in. 
long. 
HvuiLLa.—In exposed thickets near Lopollo, occasional ; fl. and fr. 
middle of Dec. 1859. No. 5818. At Empalanca; fi. and fr. Feb. 
1860. Foliage rather small. Probably a form of this species. 
No. 3214. 
4. D. benguellensis Hiern, sp. n. 
A rough scabrous-hispid apparently annual herb, 4 to 8 in. 
high, erect, divaricately branched, pallid, somewhat woody at the 
base; root vertical, somewhat woody; stem branched from the 
base; branches sub-terete, marked with 4 raised lines, hispid- 
scabrous ; leaves narrowly elliptical or linear-oblong, narrowed 
and apiculate at the apex, somewhat narrowed to the sessile base, 
rigid, hispid-scabrous, pale-green on both faces, still paler beneath, 
erect-patent, + to 14 in. long by 2 to 2 in. broad; margins 
revolute, often widely so; lateral veins about 3 on each side of 
the midrib, not conspicuous, making a small angle with the 
midrib; stipules truncate, hairy at the back, glabrous inside, 
about 5-setose at the apex, adnate to the leaf-bases and so 
sheathing; the setz pallid, longer than the sheath; flowers 
tetramerous, 7 in. long, sessile, bracteolate, numerous, in sessile 
axillary and terminal heads 3 to 4 in. in diameter; bracteoles 
unequal, some equalling others shorter than the flowers ; calyx 
2 in. long, the limb 4-partite, hairy outside, glabrous inside ; the 
segments linear-lanceolate, ciliate; corolla glabrous, funnel- 
shaped ; the tube about 4, in. long, straight; the lobes about 
gy In. long, ovate, obtuse, valvate in the bud, with a filiform tail 
or tails at or near the apex; stamens 4, glabrous; filaments 
filiform, short, inserted about the top of the corolla-tube between 
the lobes of the limb; style about equalling the stamens, glabrous, 
filiform ; stigma sub-capitate, sub-bilobed ; fruit hispid outside 
on the upper part, crowned with the persistent calyx-limb, 
apparently indehiscent, 2-seeded; seeds }$ in. long, deeply 
furrowed inside. 
Bumpo.—In fields after a crop of Arachis hypogea; fl. and fr. Oct, 
1859, No. 3228. 
HuiLia.—At Lopollo in Senhor Kneismann’s kitchen garden ; only 
one specimen, fl. end of March 1860. No. 3224. 
