Hoya glabra Schlechter 1908

Type description:

            In Beiblatt zu den Botanischen Jahrbücher #92 40 (1908) 13.  R. Schlechter. Hoya glabra Schltr. n. sp.; volubilis, alte scandens, ramosa, epiphytica; ramis ramulisque filiformibus elongatis, glabris, laxe foliatis; foliis patulis ovatis acuminatis, basi rotundatis, glabris, textura carnosis, 14—16 cm longis, infra medium 7.5—9.5 cm latis, nervis 3 primariis praecipue conspicuis, petiolo crasso 2.5—3.2 cm longo; cymis pedunculatis umbelliformibus 15—25 floris; pedunculo crasso tereti, glabro, 5—6 cm longo, pedicellis filiformibus glabris, 1.5—2 cm longis, glabris; floribus in genere mediocribus purpureis; calycis segmentis ovatis obtusis, glabris, margine tantum minutissime ciliolatis, vix 0.2 cm longis, corolla subrotata c. 1 cm diametiente, usque infra medium 5-lobata, lobis ovatis acutis reflexis, apice tantum subinconspicue puberulis, ceterum glabris; coronae phyllis carnosis horizontalibus, superne ellipticis antice breviter rostratis, callo elliptico infra apicem ornatis, subtus oblongis obtusis, medio late foveolatis; antheris trapezoideis, appendice hyalina ovata obtusa, coronae folia vix excedente; polliniis oblique cuneato-oblongoideis, margine exteriore carinato-marginatis, translatoribus perbrevibus, retinaculo minuto; stigmatis capite conico.
            Borneo: auf Bäumen in der Wäldern an Long-Wahau (R. Schlechter n. 13458, blühend im August 1901). Mit H. latifolia Bl. am Nächsten verwandt.

Translation: twining, high climbing, branched, epiphytic, branches and branchlets threadlike elongate, flexible, glabrous, loosely leaved; leaves outspread ovate acuminate, base rounded, glabrous, fleshy texture, 14—16 cm long in the middle 7.5—9.5 cm wide, 3 primary nerves especially conspicuous, petiole thick 2.5—3.2 cm long; cymes pedunculate formed like umbels of 15—25 flowers; peduncle thick round, glabrous, 5—6 cm long, pedicels threadlike glabrous, 1.5—2 cm long, glabrous; flowers midsize in the genus, purple; calyx segments ovate, obtuse, glabris, margines only minutely ciliate, barely 0.2 cm long. Corolla somewhat rotate about 1 cm in diameter, 5 lobed to below the middle, lobes ovate acute apex reflexed, apexes barely somewhat conspicuously puberous, otherwise glabrous; leaflets of the corona fleshy horizontal, above elliptic in front briefly beaked, with a beautiful ornate elliptic outer apex, below oblong obtuse, in the middle broadly channeled, anthers trapezoidal appendages ovate hyaline leaflets of corona barely exceeding; pollinia oblique cuneate-oblong, exterior margines with keels, translators very small, retinaculum minute, stigma head conic.
            Borneo: on trees in the forest near long-Wahau (Schlechter n. 13458, blooming in August 1901) Most closely allied to H. latifolia Blume.

Compilers Notation: Blume did not name a H. Latifolia, the species was named by George Don.

Other literature:

             In Journal of the Royal Asiatic Society Straits Branch (Spec. #) (1921) 506.  H. Ridley. 5. Hoya glabra Schltr. in Engl. Bot. Jarb. 40 (1908) Beibl.92: 14. Borneo. Schlechter 13458. Endemic.

             In The Asclepiadaceous Works of Friedrich Richard Rudolf Schlechter (1992) 30. A. Nicholas. H. glabra Schlechter (Schlechter 13458) – 14.
            In Dr. Schlechter’s Hoya Species (1993) 68-69. (Translation) R. D. Kloppenburg.     Hoya glabra Schlechter Published by Dr. R. Schlechter in: Botanische Jahrbücher, Beiblatt 40 #92 (1908) 13   "Borneo Is., Molucca”.
            Twining high climber, branched, epiphytic; branches and branchlets threadlike, elongate, flexible, glabrous, loosely leaved; leaves outspread ovate acuminate, with the base rounded, glabrous, texture leathery, 14-16 cm. long, below the middle 7.5-9.5 cm. wide, with the 3 primary nerves especially conspicuous; petiole thick 2.5-3.2 cm. long; cymes pedunculate, shaped like umbels, 15-25 flowered,; peduncle thick, round, glabrous 5-6 cm. long, pedicels threadlike, glabrous 1.5-2 cm. long, glabrous; flowers in general midsize, purplish; with the segments of the calyx ovate obtuse, glabrous, margins to a degree only, ciliate, barely 0.2 cm. long; corolla somewhat rotate about 1 cm. in diameter, 5 lobed all the way to below the middle, lobes ovate acute, apex reflexed, with the tip to a degree only somewhat inconspicuously puberulous (downy), otherwise glabrous; with the scales of the corona fleshy, horizontal, above the middle broadly pitted; anthers trapezoidal, with the appendages hyaline, ovate obtuse, with the apex of the corona barely exceeding; pollinia oblique cuneate-oblong, exterior margin keeled, translators very short, retinaculum minute; with the head of the stigma conic. Borneo: On trees in the Forest at Long-Wahau (Schlechter #13458, flowering in August 1911). Most closely allied with H. latifolia Blume.

Hoya glabra Schlechter, 1908, Type # 13458 (B)