Spermacoce. | LXX. RUBIACEEZ (HIERN). * 235 
2 pairs of spreading leaves; bracteoles not numerous. Calyx-teeth 4, 
subequal, glabrous, slender, as long as the ovary. Corolla-tube exceed- 
ing the calyx-teeth. Ovary glabrous. 
R Upper Guinea. Niger Expedition, at Nupe, in rocky places, very abundant, 
arter ! 
3. S. Phyteuma, Schweinf. mss. in herb. A stiff erect hispid- 
hirsute annual, somewhat branched, nearly 2 feet high. Stem and 
branches subterete below, obtusely 4-sided about the middle, subcom- 
pressed towards the apex. Leaves linear-lanceolate or linear-apiculate, 
wedge-shaped towards the base, sessile, scabrous above and on the 
revolute margin, 14-31 by ,-4 in., lateral veins inconspicuous; 
sheath short, with about 3-5 sete, the middle seta about 4-} in. long. 
Flowers about 3 in. long, numerons, sessile, crowded in dense heads of 
3-¢ in. diameter, terminal and in upper axils, based by 1-3 pairs of leaves 
the stipules of which are not much dilated; bracteoles subpaleaceous, 
cleft, shorter than the calyx. Calyx-teeth 4, subequal, linear-subulate, 
scabrid-ciliate, longer than the glabrous ovary. Corolla pale purple, 
elongate-funnel-shaped ; tube rather longer tl 1n the calyx-teeth ; 
throat bearded with short thick hairs. Anthers ob omg, much exserted ; 
filaments long, puberulous. Style long, puberulous; stigma small, 
Capitate. 
Nile Land. Djurland, Schweinfurth ! 
4. S. compressa, Afzelius mss. in herb.; non R. Br. A glabrous 
erect simple or branched annual, 1-2 feet high. Stem and branches 
subterete at the base, obtusely 4-sided above, more or less compressed, 
sulcate. Leaves linear or narrowly elliptical, acute, slightly scabrous, 
134 in. long, narrowed towards the base except the floral ones, sessile ; 
stipules with about 4 or more sete about as long as the sheath. Flowers 
in. long, several together, verticillate, in small terminal and axil- 
lary heads, based by 1-2 or more pairs of spreading leaves ; bracteoles 
Wanting or small. Calyx-teeth 4, lanceolate-subulate, ciliolate or 
scabrid, rather long in flower. Corolla-tube long, slender, twice ex- 
ceeding the calyx-teeth. Anthers dark blue, exserted. Capsule 
puberulous towards the apex. Style purplish; stigma yellowish. 
Fruit 3 in. long, glabrous, somewhat turbinate, tipped with the per- 
sistent calyx-teeth of zy in. 
Ex ePer Guinea. Sierra Leone, (flowers quite white) Afzelius! Purdie! Niger 
Pedition, at Nupe (flowers pale lilac), Barter! 
5. $.2 pilosa, DC. Prodr. iv. p. 553. Herbaceous. Stem and 
branches 4.sided, pubescent towards the extremities, puberulous be- 
low. Leaves ovate or ovate-lanceolate, pointed, shortly narrowed to 
» Subsessile base, scabrous above with depressed veins, hispidulous 
neath, 4-2 in. long. ; stipules with short trancate sheath and 3-5- 
Setulose sete of about din. long. Flowers very small, verticillate, 
many together ; clusters axillary and subterminal, exceeded by the 
Carading floral leaves, sessile or (by exception) on short peduncles. 
lyx-teeth 4, ovate or lanceolate, subequal or not very unequal, 
