84 Kxxiv. APOCYNACE^ (stapf). [Caiyodinus. 



arches ; petiole 1-1 J- lin. long. Flowers axillary, rarely terminal, solitary 

 or sometimes in pairs, subsessile. Calyx 1 lin. long, ver}'- minutely 

 rusty-pubescent ; sepals 4, ovate, subobtuse, ciliolate. Corolla white, 

 fragrtmt, glabrous except the delicately rusty-downy outer base of the 

 lobes, slender ; tube slightly widened below the mouth, 8-9 lin. long; 

 lobes linear, acute, 12 lin. long, 1 J lin. wide. Ovary finely pubescent 

 except at the glabrous base ; style slender, 6-7 lin. long, glabrous above. 

 — Stapf in De Wild. &, Durand, Contrib. Fl. Congo in Ann. Mus. Congo, 

 Bot. ser. 2, fasc. i. 34 ; Hallier f . Kautschuklianen in Jahrb. Hamburg. 

 Wissensch. Anstalt. xvii. (1899), 3. Beih. 112; De Wild. & Durand, 

 Reliq. Dewevr. in Ann. Mus. Congo, Bot. ser. 3, fasc. ii. 149. C. gracilis, 

 Stapf, 11. ce. 303 and 35 respectively (the fruit according to Hallier f. 

 I.e.); Dew^vre in De Wild. & Durand, Reliq. Dewevr. I.e. (Dewevre's 

 note). 



Upper Guinea. Caineroons: near Batanga, Binklage, 1161 ! (not 1162, as 

 Hallier quotes). 



IiOiver Guinea. Lower Congo: Stanley Pool, Deivevre, 709! Kiraueiizaj 

 Dewevr e, 516 ! 



I suggested in my paper on the Apocynacece of the Congo Free State (Ann. 

 Mus. Congo, Bot. ser. 2, fasc. i. 36) that some detached fruits accompanying 

 Dewevre's 516/^ might belong to C. gracilis. Hallier (I.e.) pointed out, however, that 

 tliis is not the cose and suggested that the fruits might be those of C. ligustrifolia. 

 1 have since seen a specimen of C. gracilis, collected by Gillet at Kisantu, with 

 flowers and fruits still attached to the branch. These fruits are different frora 

 those which 1 described as belonging to C. gracilis, and there can be no doubt 

 that my assumption was erroneous. Dewevre, in his note referring to 516 {sic) 

 quoted by De Wild. & Durand in Reliq. Dewevr. I.e., describes some fruits, which 

 are evidently the same, but being subsequently mixed up with his 516/^ misled 

 me. They very likely belong to C. ligustrifolia, the more so, as there is also a 

 fragment of a branch with 516/^ the leaves of which sgree very well with those 

 of C. ligustrifolia. The fruits are more or less shortly conic with a wide base, much 

 resembling those of C. turhinata, but smaller. Hallier f. (I.e.) also refers a speci- 

 men collected by Pogge (1153 !) near Mukenge in the Congo Free State to C. ligus- 

 trifolia. It has very similar fruits, but is otherwise so defective that its identity with 

 C. ligustrifolia is doubtful. Another specimen collected by Laurent at Lusambo ! is 

 quoted by Hallier under this species, but (coi^isting of a barrto tw ig) is very doubtful. 



20. C. gracilis 9 Stapf in Kew Bulletin, 1898, 303 {excl. the fruit'). 

 A dwarf, sometimes prostrate shrub, with or without very slender 

 terminal tendrils ; branches slender, reddish-brown, glabrous or 

 sparsely hairy when young ; lenticels very minute. Leaves opposite, 

 ovate-oblong or ovate-lanceolate, gradually and obtusely acuminate 

 (acumen 2-4 lin. long), rounded at the base, If -2 J in. long, 7-12 lin. 

 broad, thinly coriaceous, scantily hairy below, chiefly along the midrib, 

 which is slightly raised above, or glabrescent ; lateral nerves about 12 

 on each side, like the tertiary nerves and the veins very faint, 

 connected close to the margin by flat faint arches ; petiole 2-2^ lin. 

 long, hispidulous. Flowers pedicelled in terminal or axillary few- 

 flowered peduncled cymes, or solitary ; peduncle up to 1 in. long, very 

 slender, like the pedicels more or less hispidulous, these up to 3 lin. 



