Hoya dictyoneura K. Schumann 1905

Type description:

            In Nachtrage zur Flora Deutschen Schutzgebiete in der Südsee (1905) 362-363.  K. Schumann & K. Lauterbach. Hoya dictyoneura K. Sch. n. sp. Frutex scandens ramis florentibus gracilibus novellis ipsis complanatis glabris; foliis breviter petiolatis oblongis vel ellipticis vel suborbicularibus acutis basi rotundatis quintuplinervis utrinque glabris; racemis breviter pedunculatis congestis primum subumbellatis demum rhachide crassa elongata; floribus pedicellatis pluribus; sepalis ovatis glabris parvis; corolla alto in lobos ovatos acutos divisa intus prope basin papillosa; coronae lobis radicantibus acutis subtus subtilissime oblique striatis. Der etwa meterlange blühende Zweig ist am Grunde 3 mm. dick, holzig und mit dünner zimmtfabiger Rinde bekleidet, Der sehr kräftige, oben abgeflachte Blattstiel ist höchstens 1 cm lang; die Spreite hat eine Lange von 5 - 8.5 cm und eine Breite von 3.5 -  6 cm das oberste Paar der Grundnerven verläust bis zur Spitze, stärkere Seitennerven sind nicht entwickelt, dafür springt aber das Nervennetz an beiden Seiten Kräftig, wenigtens an der getrockenten Pflanze vor. Der Blütenstand wird von einem 1 cm langen, sehr kräftigen Steil getragen; die Rhachis miszt 5 mm; die Blütenstielchen sind 1.5 cm. lang. Der Kelch miszt reichlich 1 mm; die weisz Blumenkrone ist 6 mm long. Die Staminodien sind 4 mm lang. Kaiser-Wilhemsland: Sattelberg, 850 m u. M. (Nyman n. 720, bl. Juli 1899). die Form die Blätter und die Ziemlich kleinen weiszen Blüten kennzeichnen die Art.

Translation: Climbing shrub branches flowering slender young stems themselves flattened and glabrous; leaves briefly petiolate oblong or elliptic or somewhat orbicular acute with the base rounded five nerved both sides glabrous; racemes shortly peduncled crowded together somewhat umbellate at first later the rachis thick elongate; flowers from multiple peduncles; sepals ovate glabris small; corolla high with lobes ovate acute divided inside near the base papillose; lobes of the corona spreading acute below somewhat very little obliquely striate.
            The nearly meter long blooming branch is near the base 3 mm. thick, woody and clothed with cinnamon-colored bark. The very strong petiole is somewhat flat and measures 1 cm. long. The leaves are 5 - 8.5 cm. long and 3.5 - 6 cm. wide. The principle pair of thick basal nerves reach almost to the leaf tips; side nerves are not well developed, instead there is more a network of strong veins on both sides, at least on the dried plants. The inflorescence is held on a very strong 1 cm. long peduncle carrying a 5 mm. long rachis. The peduncles are 1.5 cm. long. The calyx measures as much as 1 mm; the white corolla is 6 mm. long. The corona scales are 4 mm. long. New Guinea: Sattelberg, 850 meters above sea level (Nyman #720, blooming in July 1899). The form of the leaves and the handsome small white flowers characterize this species.

Other literature:
            In Botanische Jahrbücher 50 (1913) 117.  “Die Asclepiadaceen von Deutsch Neu Guinea” R. Schlechter. 19 ? H. Dictyoneura K. Schum. in K. Schum. u, Lauterb., Nachtr. (1905) p. 362. Nordöstl. Neu-Guinea: auf dem Sattelberg, bei 850 m u. M. (E. O. Nyman n. 720. — Blühend in Juli 1899).
            Das Original dieser Art im Berliner Herbar besteht aus einen sehr dürstigen Exemplare mit einer recht schlechten Blüte. Soweit sich danach überhaupt etwas erkennen läszt. möchte ich glauben. dasz die Art in diese Verwandtschaft gehört, denn sie hat die dicken Zweige und bereiten Blätter der beiden oben behandelten Arten. An eine identität mit einer der breits beschriebenen möchte ich nicht glauben, da die Standortsverhältnisse zu verschieden sind. Auszerdem hat H. dictyoneura K. Schum. auf der Unterseite fünf stark hervortretende Nerven, welche bei den übrigen fehlen. Beeseres Material der Art ware jedenfalls sehr erwünscht. Nach Schumann sind die Blüten weisz.

Translation: Northeastern New  Guinea on Saddle Mountain, at 850 meters altitude (E. O. Nyman #720  — blooming in July 1899).
            The original of this species is in the Berlin Herbarium, but is a very poor example with rather a bad bloom. As far as can be determined, I would like to believe that the species belongs in this group, for it has the thick branches and wide leaves of both of the above discussed species. I would not like to think it is identical with one of those already described, since the local conditions are different. Moreover, H. dictyoneura K. Schum. has five very prominent veins on the underside that are lacking in the others. In any case better samples of the species are very much desired. According to Schumann, the blooms are white.
 
            In Hoyas of  Northeastern New Guinea (1992) 42.  R. D. Kloppenburg (Translation). Hoya dictyoneura K. Schumann in K. Schumann and  Lauterbach. Nactr. (1905) p. 362. Northeast New guinea: in the saddle mountains, at 850 m.  altitude (E. O. Nyman #720 - Blooming in July 1899).
The  original  of this species in the Berlin Herbarium is  a  very poor  example, with a rather worthless bloom. As far as  generally determined,  I  would like to believe basically that  the  species belongs  in  this group, for it has the thick  branches  and  wide leaves of both above discussed species. I would not like to  think that  it is identical with one of those already  described,  since the  conditions  are so different,. Moreover,   H. dictyoneura  K. Schumann has five prominent veins (nerves) on the underside, which are lacking in the others. In any case, however, better  material of the species is very desirable. According to Schumann the blooms are white.

            In The Asclepiadaceous Works of Friedrich Richard Rudolf Schlechter (1992) 30. A. Nicholas. H. dictoneura Schumann – 33.