24.2 LXX. RUBIACEH (HIERN). | Octodon. 
within the stipnlar sheath of the uppermost leaves and again at the 
one or two next nodes ; bracteoles filiform, slightly clavate, purplish at 
the apex. Calyx-teeth 8, small, dark purple. Corolla white ; lobes 4, 
acute, bluish at the apex. Anthers white, just exserted.—Spermacoce? 
filifolia, Perr. et Lepr. ex DC. Prodr. iv. p. 540. 
Upper Guinea. Gold Coast, Thonning on the Quorra, Th. Vogel! Senegambia, 
Heudelot! Cape Coast, Brass ! Sierra Leone, Afzelius! 
Nile Land. Djur-land, Schweinfurth ! 
2. O. setosum, Hiern. A nearly glabrous erect annual, simple 
or somewhat branched, about 2 feet high. Stem sulcate. Leaves 
elongate-linear, acute, sessile, spreading, 14-4 in. long, equalling or 
longer than the internodes, adnate at the base to the stipular sheath 
which is tipped on each side with 3-5 filiform sete of 4-3 in. in length. 
Flowers many together, crowded within the stipular sheaths of the up- 
permost leaves; heads terminal, solitary ; bracteoles filiform, slightly 
clavate, fimbriate at the tip. Calyx-teeth 4, small, obtuse. Corolla 
pale lilac; lobes 4, lanceolate, as long as the tabe. Anthers much 
exserted. 
z Upper Guinea. On the Quorra, Barter! at Nupe, Barter! Dahomey, Consul 
urton ! 
75. RICHARDIA, Houst. ex Linn. Gen. Pl., ed. i. p. 100, 
(1737) ; non Kunth. ; 
(Ricardia, Houst. Rel. p. 5, t. 9 (1781). Richardsonia, Kunth in 
aa Par. iv. p. 430 (1818); Benth. et Hook. f. Gen. Pl. il. 
p- : 
Calyx-tube obovoid ; limb deeply 5—6-lohed, about as long as the 
ovary, at length deciduous. Corolla funnel-shaped, throat glabrous ; 
limb spreading, 5—4-lobed ; lobes ovate, setulose at the back near the 
apex, valvate in the bud. Stamens 5-4, shortly exserted, inserted on 
the throat of the corolla; filaments slender ; anthers oblong, glabrous, 
fixed by the back. Diskinconspicuous. Ovary 3-celled ; style filiform, 
shortly 3-cleft ; stigmas 3, exserted, subcapitate, bifid or expanded ; 
ovules solitary, attached to the septum at or below the middle. Fruit 
at length 3-coccous ; cocci indehiscent, subcrustaceous, obovoid. 
obovoid, attached below the middle; radicle inferior.—Herbs more °F 
less hispid, with opposite subsessile leaves, shortly sheathing trunca 
setose stipules adnate to the leaf-base, and small sessile hermaphrodite 
flowers arranged many together in sessile terminal heads. 
A genus of a few species, wholly confined to America with the exception of the 
following species. . 
1. R. seabra, Linn. Sp. Pl., ed. i. p. 330 (1738). Hirsute-hispid, 
a few inches high ; stem erect; branches spreading. Leaves ov or 
obovate, obtusely pointed, wedge-shaped at the base, slightly scabrous, 
3-1} in. long, veins inconspicuous ; stipular sheath short, termn@ 
by 3-5 sets on each side. Flowers } in. long. Fruit } in. long-— 
Richardsonia scabra, St. Hil. Pl. Us. t. 8, cum syn. 
Mozamb. Distr. Quilimane, Kirk / 
Previously known only from tropical America. 
