Hoya gonoloboides Regel

Type Description:

            In Acta Horti Petropolitani 8 (1883) 642. E. Regel. 3. Hoya (Dregia E Meyer) gonoloboides Rgl. Volubilis, caulibus fusco-hispido-villosis. Folia membranacea penninervia, reticulato-venosa, cordato-ovata, acuminata, petiolata, utrinque hirto-pilosa, subtus ad nervos hispida. Petioli pedunculique fusco-hispido-villosi. Calyx 5-sepalus; sepalis ellipticis, acutis, praecipue ad marginem hirto-villosis. Corollae tubo brevi, glabro, quam sepala parum breviore limbo rotato, 5-lobo, intus atrofusco, extus pallido, utrinque breviter hirtulo; lobis ovatis, obtusis. Coronae stamineae foliola tubo corollae adnata supra incurva, subquadrata, angulo interiore in laminam obtusa antherae incumbentem exeunte,
            Affinis H. lacunae Ham. (Dregia volubilis Benth, gen. pl. 775 Hooker fl ind. tom. X.* p. 46), villosior autem, corollae limbo atro-fusco lobis rotundatis, corona staminea tubo adnata etc.—Haage et Schmidt specimen siccum misit.
* Hoyas in Flora of British India are in Volume 4 not 10 as quoted here (Asclepiadaceae 45).

Translation: Climbing, stalk dark brown, with hispid shaggy hairs. Leaves membranaceous, penninerved, reticulately veined, cordate ovate, acuminate, petiolate, both sides with long ascending hairs, hairs below on the nerves. Petioles and pedicels also with long hispid hairs. Calyx of 5 sepals; sepals elliptic, acute, with stiff bristly hairs especially on the margines. Tube of the corolla short, glabrous, not as short as sepals, limb rotate, 5 lobed, inside dark brown, outside pale, both sides briefly hirsute; lobes ovate obtuse. Leaflets of the staminal corona adnate to the tube of the corolla incurved above, somewhat four-sided, interior angle blade obtuse, anthers incumbent on the end.
            Allied to H. lacuna Ham, (Dregia volubilis Benth. plate 775, Hooker in Flora of British India tom. X p.46), villose but nevertheless the limbs of the corolla lobes rounded dark brown, staminal corona adnate to the tube etc. Haage & Schmidt specimen looks different when dried.

Other literature:

            In Dictionary of Gardening Century Edition (1901) 430 George Nicholson. H. gonoloboides (Gonolobus-like). fl. brownish, rotate, with ovate, obtuse lobes, umbellate; peduncles hispid. l. membranaceous, cordate-ovate, acuminate, hairy on both sides. Stem fulvous-hispid, climbing. India (?) 1884. A distinct plant.

            In The Royal Horticulture Society Dictionary of Gardening  (1965) 1016.  (1st Ed. 1951). H. gonoloboides. Climber with reddish-brown bristly hairs. l. cordate-ovate, slender-pointed, rather thin, hairy on both sides. fl. brownish, rotate; lobes ovate, obtuse; umbels n bristly hairy peduncles. India? 1884.