Argostemma. | LXX. RUBIACEZ (HIERN). 45 
Anthers obtuse, dehiscing by apical pores.—Cortusoides, Afzel. in Hb. 
Banks. et ex Benn. J. c. 
Upper Guinea. Sierra Leone, Afzelius! ; on rocks in the rivers, Sierra del 
Crystal, 1° N. lat., Mann / 
Apparently identical with A. verticillatum, Wall. in Roxb, Fl. Ind., ed. Carey, ii. 
325 (1824), a native of Nipal. 
9. PENTAS, Benth.; Benth. et Hook. f. Gen. Pl. ii. p. 54. 
Calyx-tube campanulate-turbinate, short, ribbed at least in fruit; 
lobes usually 5, unequal, some usually enlarged at least in fruit, 
frequently with one or more exterior alternating teeth, persistent. 
Corolla tubular; tube more or less funnel-shaped above, especially in 
the flowers with included anthers, bearded within the throat; lobes 
somewhat unequal, valvate in estivation. Anthers glabrous, linear- 
oblong, inserted within or below the throat of the corolla, subsessile 
i the flowers with included anthers, on slender filaments in those 
with exserted anthers. Disk sometimes after flowering produced into 
a depressed cone. Ovary 2-3-celled; style filiform, more or less 
exserted; ovules numerous. Capsule 2-celled, membranous or 
coriaceous, loculicidally 2-valved, many-seeded. Valves persistent.— 
Shrubby herbs or small shrubs with subterete branches and opposite 
leaves. Stipules multipartite with subulate segments. Flowers 
cymose, usually dimorphic by the greater or less degree of the 
exsertion of the style corresponding with the included or exserted 
stamens, 
A small genus limited to Arabia, Africa and African Islands, including 
car, 
Corolla-limb 3-3 in. diam. Leaves usually with numerous 
(12-18) lateral veins on each side of the midrib. 
umentum somewhat ferruginous. 
Calyx about equalling the corolla 
. ee ee © 1. PB. Schimperiana. 
Calyx about half the length of the corolla . . . . 2. P. occidentalis. 
Indumentum pallid . toe ee ee ew ew ew es 68. PB. carnea. 
Corolla-limb $-7 in. diam. Leaves with usually less numerous 
(about 8) lateral veins on each side of the midrib. 
Owers -}in. long. Leavesdull. . . 4, P. purpurea. 
Flowers 3 in. long. Leaves shining on the upper surface. 
Habit rambling. Leaves subsessile, . . . . . . 5. P. arvensis. 
Habit erect. Leaves petiolate . . . . 1. ~ 6. P. parviflora. 
Sh LP. Schimperiana, Vatke in Linnea xl. p. 192 (1876). 
tubby below, about 2 feet high. Pubescence short subferruginous. 
1 ves narrowly elliptical or ovate, narrowed at both ends, many 
(12-18) nerved, 2-6 by 4-2 in.; petiole ranging up to nearly fa 
pee Corymbose, mostly sessile. Flowers shortly pedicelled, 3 in 
rae Calyx about equalling the corolla, all the lobes subulate or 
with lanceolate, rose-coloured. Corolla pale rose-coloured, shaggy 
nthe throat ; limb nearly } in. diam, Anthers (in our specimens) 
yak Fruit + in, diam.—Vignaldia Schimperiana, A. Rich. Fl. 
yee 1. 858 (1847) ; Mussenda Schimperi, Hochst. in Hb. Schimp. 
Y88. 1. n. 38, ii. nn. 838, 916. 
Wile Lana, Abyssinia, Schimper! Roth! Parkyns! Quartin Dillon! 
