FUNTUMIA elastica Stapf [family APOCYNACEAE], in Proc. Linn. Soc. 1900, 2. —Schlechter, Westafr. Kautschuk-Exped. 236; Stapf in Hook. Ic. Pl. tt. 2694–95; De Wild. in Rev. Cult. Colon. x. 74–76. De Wild. in Rev. Cult. Colon. xii. (1903), 193 et seq. and Not. Apocyn. Laticif. Congo, 78, 91; Ceuleneer in Bull. Soc. Étude. Colon. xi. (1904), 6 et seq. Kickxia elastica, Cheval. in Bull. Mus. Hist. Nat. Par. vii. (1901), 426.
Kickxia elastica Preuss [family SCROPHULARIACEAE], in Notizbl. Königl. Bot. Gart. Berlin, ii. 353–360, t. i.; Warburg, Kautschukpfl. 112, 153 and Plant. à Caoutch. 205; Vilb. in Warb. Plant. à Caoutch. 204, fig. 15, 206, 207; Schlechter in Tropenpfl. iv. 109–120; De Wild. in Rev. Cult. Colon. vii. 633, 634, 743–747.
Kickxia africana Stapf [family SCROPHULARIACEAE], in Kew Bulletin, 1895, 244, with plate (the fruit only); K. Schum. in Notizbl. Königl. Bot. Gart. Berlin, i. 217–221 with plate (the fruit only); Warb. in Tropenfl. i. 99–103 with plate (the fruit only); Lecomte in Rev. Cult. Colon. i. 12–19, 41–47, fig. 2 (the fruit only); Jumelle, Les Plant. à Caoutchouc, 68–73, fig. 10 (fruit only); Thonner in De Wild. & Durand, Pl. Thonner. Congol. xii.; Henriques, Der Kautschuk, 18, t. iii.; Warb. Kautschukpfl. 110–112 and Plant. à Caoutch. 200–205 partly; not of Benth.