Hoya cochinchinensis Loureiro 1817

Type description:

In Systematisches Vegetabilium (1817) 52.  3. H. ? cochinchinensis Lour.; repens; foliis ovatis oppositis, corollis infundibuliformibus. Stapelia cochinchinensis Lour. Fl. Cochinch. p. 206.
Caulis fructicosus longus teres, subsimplicissimus. Folia carnosa integerrima glabra. Flos albus, umbellis magnis simplicibus, pedunculo communi-longo crasso. Cal. 5-fidus inferus persistens, laciniis acutis. Cor. monopetala tubo gracili longo, limbo 5 partito, laciniis acutis conniventibus genitalia tegentibus. Nectarium stella unica carnosa plana radiis, 5 acutis magnis expansis. Filamenta nulla. Antherae 5 oblongae procumbentes inter crenas. Nectarii, Germen ovatum bifidum. Stigmata a longiuscula sessilia. Folliculi 2 teretes subtati, seminibus triplieiiscula longis, teretibus, coronatis pappo longissimo. Lour. In montibus Cochinchinae. h.

Translation: Hoya (questionable) cochinchinensis. Loureiro; creeping, leaves opposite, ovate, corolla formed like a funnel. Stapelia cochinchinensis Loureiro, in Flora cochinchinensis (1793) page 206.  Long shrubby  round stem almost  unbranched. Foliage fleshy absolutely entirely glabrous. Flowers white, umbels large and simple, peduncles commonly long fleshy. Calyx of 5 parts persistent, lobes acute. Corolla a one petaled tube, long and slender with 5 lobes on limb divisions acute, covering the genitalia indusium. The Nectarium a solitary star,  fleshy clearly 5 radial, acute large expansive. Filaments none. Anther of  5 lobes oblong, inside scalloped procumbent  on the nectaria. Ovary ovate bifid. 2 stigmas very long and sessile. Seed pods 2, round awl shaped, very late, long circular, with a very long cone-shaped tuft. Loureiro. In the mountains of Cochinchina. Woody
 
In DeCandolle’s Prodromus Systematisches Vegetabilium 8 (1844) 640.  Decaisne. Under species non satis notae. H. cochinchinensis (Roem. et Sch. Syst. 6, p. 52), certo non hujus generis ob coroll infundibulifor. tubo gracilis longo, limbo 5-partito, laciniis acutis conniventibus. - An potius Ceropegiae species ? Stapelia cochinchinensis Lour.
H. cochinchinensis auct. = Non hujus ordinis ? vid. Sup.

Translation: notably not this genus by reason of the funnel shaped corolla, with a long narrow tube, limb with 5 parts, flaps acute covering. It is possibly a Ceropegia species. Stapelia cochinchinensis Loureiro. H. cochinchinensis of the authors = notably not in order ? without support.

In Flore Generale des Indo Chine 4 (1912) 141.  J. Constantin. 23. H. cochinchinensis Roem. et Sch. Syst., 6, p. 52; Stapelia cochinchinensis  Lour. Fl. Coch., I, p. 206, Dcne Prodr., VIII, p. 664; Ceropegia ?
Tige fruticuleuse, longue, cylindrique, rampante, presque simple. Fueilles glabres, charnues. Inflorescence en ombelle; pedoncule long, epais; fleur blanche. - calice persistant, a 5 lobes aigus, connivents. Corolle infundibuliforme, a tube grele, long; lobes 5, aigus, connivents. Coronule en etiole charnue, a 5 rayons aigus, etales. Etamines: filet nul; antheres oblongues. Fruit: 2 follicules cylindriques, subules; subules; graines en 3 series, a longue aigrette. Cochinchine: (Loureiro).

Translation: Plant climbing, long, cylindrical, rampant, presque simple. Foliage entirely glabrous, fleshy. Inflorescence in umbels; long stalked, simple; white flower.  Calyx persistent, has 5 sharp lobes, connivent. Corolla funnel-shaped, has tube hail, long,; lobes 5, sharp, connivent. Corona glabrous somewhat fleshy, has 5 spindles, sharp, spread out. Stamens: fused net; anthers oblong. Fruit: 2 cylindrical follicles, awl shaped; seeds in 3 series, has long tuft.