Hoya flavescens Schlechter 1913

Type description:

            In Botanische Jahrbücher 50 (1913) 112-113.  R. Schlechter. 11. H. flavescens Schltr. n. sp. — Suffrutex epiphyticus, ramosus scandens. Rami filiformes, flexuosi, laxe foliati, teretis, glabri. Folia patentia vel patula, oblonga vel lanceolato-oblonga, acuminata, basi subcuneato-rotundata, carnosula, glabra, petiolo brevi, carnosulo, superne leviter sulcato. Inflorescentiae graciliter pedunculatae, umbelliformes, 10 — 20 florae, pedunculo pedicellisque gracilibus, glabris. Flores in sectione mediocribus, illis H. ischnopus Schltr. similes. Calycis foliola ovata, obtusa, glabra, quam corolla multo breviora. Corolla subrotata, usque infra medium 5-lobata, extus glabra, intus dense et minute papillosa, marginibus intus subvilloso-puberula, ima basi subbarbellata, lobis ovatis, obtusiuscule acuminatis, marginibus subrecurvulis. Coronae foliola horizontalia, patentia, superne elliptico-oblonga, antheris paululo breviora. Pollinia oblique oblongoidea, translatoribus perbrevibus, retinaculo rhomboideo, quam pollinia fere 3-plo minore.
            Ein zierlicher Schlinger mit schnurartigen, locker beblätterten Zweigen. Blätter 10 — 16 cm lang, in der Mitte 3.7 — 4.3 cm breit. Blattstiele 0.5 — 1.5 cm lang. Blütenstände doldig, 10 — 20 blütig, auf 5.5 — 6.5 cm langen Stielen. Blütenstiel sehr fein, kahl, bis 1.7 cm lang. Kelchzipfel sehr klein, ca. 1.5 mm lang. Korolla ca. 1.6 cm im Durchmesser. Koronaschuppen von der Spitze bis zum äuszeren Rande knapp, 0.3 cm long.
 Nordöstl. Neu-Guinea: auf Bäumen in den Wäldern des Kani-Gebirges, ca. 800 m ü M. (Schlechter n. 17623. — Blühend im April 1908)
Durch die am Rande dicht behaarten Korollaabschnitte ähnelt die Art der H. marginata Schltr., doch hat sie viel schmälere und kleinere Blätter, innen dicht papillöse Blüten mit bedeutend breiteren Koronaschuppen.

Translation: See text below.

Other literature:     

      In Hoyas of Northeastern New Guinea (1992) 31-32.  R. D. Kloppenburg. (Translation of Die Asclepiadaceen von Deutsch Neu Guinea). 11. Hoya  flavescens  Schlechter. n. sp. -   An  epiphytic  half shrub, branched, twining. Branches threadlike, flexible, loosely leaved, round, glabrous. Leaves spreading or outspread, oblong or lanceolate-oblong acuminate, base  somewhat  cuneate  rounded, fleshy,  glabrous, petiole short, somewhat fleshy  above  lightly grooved.  Inflorescences slenderly pedunculate, umbellate, 10-20 flowered, peduncle and pedicels slender, glabrous. Flowers in the section  midsize, similar to H. ischnopus  Schlechter.  Leaflets (lobes)  of the calyx ovate, obtuse, glabrous, much shorter  than from the corolla. Corolla almost ovate, 5 lobed divided to below the middle, outside glabrous, inside densely and minutely papilose, with the margins inside somewhat villose-puberulous, at the base  somewhat tufted, lobes ovate, somewhat obtusely  acuminate, margins  slightly recurved.  Scales of the  corona  horizontal, spreading,  above  elliptic-oblong, with the apex  obtusely  acu­minate,  outside obtuse, sides thickly rounded, anthers a  little shorter.  Pollinia obliquely oblong, with the  translators  very short, retinaculum rhomboid, three times shorter than pollinia.
            A  pretty clinging vine with cord like, loosely leaved  branches, leaves  10-16 cm. long, in the middle 3.7-4.3 cm. wide.  Petioles 0.5-1.5 cm. long. Inflorescences umbellate, 10-20 flowered,  with peduncles  5.5-6.5 cm. long. Pedicels very fine, bare to 1.7  cm. long.  Calyx lobes very small, about 1.5 mm. long. Corolla  about 1.6  cm.  in diameter. Corona scales from the apex to  the  outer end, barely 0.3 cm. long.
            Northeastern  New  Guinea:  on trees in the forest  of  the  Kani mountains, about 800 m. altitude. (Schlechter #17623 --  blooming in  April  1908) Through the thick hairs on the  margins  of  the corolla lobes, it is related to the species H. marginata Schltr., but it has much narrower and with smaller leaves, the flowers  on the  inside  are papillose an the inside  and  with  considerable wider corona scales.

In The Asclepiadaceous Works of Friedrich Richard Rudolf Schlechter (1992) 30. A. Nicholas. H. flavescens Schlechter (Schlechter 17623) – 15.

            In Dr. Schlechter’s Hoya Species (1993) 64-65.  R. D. Kloppenburg. 11. Hoya flavescens Schlechter. n. sp. An epiphytic half shrub, branched, twining. Branches threadlike, flexible, loosely  leaved, round, glabrous. Leaves spreading or outspread, oblong or  lanceo­late-oblong  acuminate.,  base somewhat cuneate  rounded,  fleshy, glabrous,  petiole short, somewhat fleshy above  lightly  grooved. Inflorescences slenderly pedunculate, umbellate,  10-20  flowered, peduncle  and pedicels slender, glabrous. Flowers in  the  section midsize,  similar to H. ischnopus Schlechter. Calyx scales  ovate, obtuse, glabrous, much smaller than corolla. Corolla almost ovate, 5  lobed divided to below the middle,  outside  glabrous,  inside densely  and minutely papillose, margins inside somewhat  villose-puberulous,  at  the base somewhat tufted, lobes  ovate, obtusely acuminate,  margins slightly recurved. Corona  scales  horizontal, spreading, above elliptic-oblong, with the apex  obtusely  acuminate,  outside  obtuse, sides thickly rounded,  anthers  a  little shorter. Pollinia obliquely oblong, translators very short,  reti­naculum rhomboid, three times shorter than pollinia.
            An ornamental vine with cord like, loosely leaved branches, leaves 10-16  cm. long, in the middle 3.7-4.3 cm. wide. Petioles 0.5-1.5 cm.  long.  Inflorescence umbellate, 10-20 flowers,  on  peduncles 5.5-6.5 cm. long. Pedicels very fine, bare to 1.7 cm. long. Calyx very small, about 1.5 mm. long. Corolla about 1.6 cm. in diameter. Corona scales from the apex to the outer end, barely 0.3 cm. long. Northeast  New  Guinea: blooming in the forest of the  Kani  moun­tains,  about 800 m. altitude. (Schlechter #17623 -- blooming in April 1908) Through the thick hairs on the margins of the  corolla lobes,  it is related to the species H. marginata Schltr., but  it has  much narrower and smaller leaves, and blooms that are  papil­lose an the inside and with considerable wider corona scales. Fig.  3 G-N. G= Branches/w leaf. H= Corolla segments  inner  sur­face. J= gynostegium with corona. K L M = Corona scales. N= Polli­narium.

Hoya flavescens Schlechter, 1913, Type # 17623 (B)

Picture taken at Ted Green's, Kaaawa, Hawaii, October 2003

Picture via e-mail Oct. 3003 Debbie Armstrong, Oklahoma

Picture via E-mail Debbie Armstrong, Oklahoma, October 2003

Picture via E-mail Caterina Andersson, Sweden, October 2003