Hoya amboinensis Warburg 1907

Type description:

In Repertorium Specierum Novarum 3 (1907) 341.  Fedde. Hoya amboinensis Warburg 26. Hoya amboinensis Warb., nov. spec. Ramulis volubilibus in sicco flaccidis vel rubescebtibus 2 - 3 mm. crassis leavibus et nitidis, petiolis 5 - 7 mm. crassis glabris, in nodis incrassatis, foliis oblong-usque late ovatis basi rotundatis apice acutis 6 - 7 cm. longis 2.5 - 5 cm. latis satis supra lucidis in costae basi subglandulosis, venis ca. 4 patulis longe ante marginem arcuate confluentibus haud valde distinctis quam retinaculm vix  crassioribus. Pedunculis juxtaaxillaribus glabris 2 - 4 cm. longis 0.5 mm. crassi glabris, sepalis metro, extus glabra, intus albido-squamulosa. lobis triangularibus subacutis 3 mm. longis, coronae stamineae lobis dilatatis corollae incumbentibus plane navicularibus lucidis 1.5 mm. longis 1 mm. latis, apice interno incurvato subacuto, apice externo subrecurvo obtuso, antherarum appendiculis brevibus rotundatis. Amboin (Warburg no. 17494). Der H. diversifolia Bl.  verwandt, doch hat dieser ausser den nicht eiförmigen und nicht spitzen Blättern bewimperte Kelchzipfel, eine innen papillöse Corolla und am Innenende stumpfe Corollazipfel.

Translation: Branched twining in the dried state flaccid or turning reddish 2 - 3 mm. thick smooth and glossy, petioles 5 - 7 mm. long 1 mm. thick glabrous, thickened at the nodes, leaves oblong and broad with a rounded base, acute apex 6 - 7 cm. long 2.5 - 5 cm. wide, above clear, at the base of the costa somewhat granulous, veins about 4 outspread, curving and curving and running together prior to reaching the margines , not at all distinct, reticulations barely thickened. Peduncles glabrous approaching the axils 2 - 4 cm. long 0.5 mm. thick glabrous, sepals 1.5 mm. long ovate-lanceolate somewhat acute glabrous, corolla 1 cm. in diameter, outside glabrous, inside with small white scales, lobes triangular somewhat acute 3 mm. long, lobes of the staminal corona spreading incumbent on the corolla distinctly boat shaped clear 1.5 mm. long 1 mm. wide, with the internal apex incurved somewhat acute, external apex somewhat recurved obtuse, anthers small rounded. Amboina (Warburg #17494). Related to Hoya diversifolia  Blume, but with these differences. not egg-shaped and not with acute pointed leaves, and with a papillose inner corolla and with the end of the corolla obtuse.

In The Asclepiadaceous Works of Friedrich Richard Rudolf Schlechter (1992) 30. A. Nicholas. H. amboinensis Warb. - 36.