Hoya anulata

Hoya anulata Schlechter 1905

Type description:

In Nachträge zur Flora der Deutschen Schutzgebiete in der Südsee (1905) 362. K. Schumann and K. Lauterbach. Hoya anulata Schlechter.
Epiphytica in arboribus ramosa, nunc alte scandens, nunc dependens; ramis ramulisque elongatis, flexuosis, teretibus, glabris, radicantibus, laxe foliatis; foliis patentibus patulisve ellipticis vel oblongo ellipticis obtusis, nunc obtuse acuminatis, utrinque glabris, nervis vix conspicuis, textura carnoso-coriaceis, 6-8 cm. longis, medio fere 4-4.5 cm. latis; pedunculis crassiusculis, ca. 4 cm. longis, rhachide incrassata, demum cylindrica; umbella multiflora; pedicellis gracilibus, filiformibus, glabris, 2 cm. longis; calycis segmentis ovatis obtusculis, glabris, ca. 0.1 cm. longis; corolla rotata 0.8 cm. diametiente, lobis ovatus acutis, apice recurvis, extus glabris, intus dense et minute papilloso-puberulis, corolla intus medio anulo paulo incrassato, glabro, 5-lobulato ornato; coronae foliolis horizontalibus carnosis; superne oblongis obtusis, apice breviter et acute acuminatis, medio incrassatis, subtus (dorso oblongis, medio longitudinaliter foveolatis); antheris late trapezoideis, appendice hyalina parvula, ovata obtusa; polliniis oblique oblongis, translatoribus brevibus, retinaculo rhomboideo polliniis multoties minore; stigmatis capite breviter conico.
Kaiser-Wilhelmsland: Auf Bäumen am oberen Nuru auf dem Wege vom Ramu zur Küste. alt. ca. 400 m (R. Schlechter n. 14185, Bl. Feb. 1902).

Durch den eigenartigen etwas verdickten Ring am Grunde der Abschnitte der Korolla kann diese Art von den verwandten leicht unterschieden werden. Die Blüten sind weisz und besitzen eine rosenrote Korona.

Translation: Epiphytic in the tree branches, sometimes high climbing, sometimes dangling; branching and rebranching, loosely leaved; leaves flat outspread elliptic or oblong elliptic, ovate, sometimes obtuse acuminate, both sides glabrous, nerves barely conspicuous, of thick leathery texture, 6-8 cm. long, near the middle 4-4.5 cm. wide; peduncles moderately thick about 4 cm. long, with the rachis thickened, cylindrical at the end; many flowered umbel; pedicels slender, threadlike, glabrous 2 cm. long; calyx segments ovate, somewhat obtuse, glabrous, about 0.1 cm. long; corolla rotate 0.8 cm. in diameter, lobes ovate acute, apex recurved, outside glabrous, inside densely and minutely papillose-puberulous, corolla inside near the center with a thickened ornate 5 lobed glabrous ring; leaflets of the corona fleshy horizontal; above oblong obtuse with the apex short and acutely acuminate, in the center thickened below on the back oblong, in the middle minutely longitudinally pitted; anthers broadly trapezoidal with the appendages scantily hyaline, ovate obtuse; with the pollinia oblong, translators short, retinaculum rhomboid many times smaller than the pollinia, with the head of the stigma briefly conic.
Kaiser-Wilhelmsland: on trees on the upper Nuru, on the way from Ramu to the coast about 400 meters altitude. (R. Schlechter #14185, blooming in February 1902).
Through the curious somewhat thickened ring at the base of the corolla segments, this species can be distinguished from the others. The blooms are white and with a rose red corona.

Other literature:

In the Botanische Jahrbücher 50 (1913) 118. “Die Asclepiadaceen von Deutsch Neu Guinea” R. Schlechter. 22. 22. Hoya anulata Schltr. in K. Schum. u. Lauterb., Nachtr. (1905) 362. Nordöstl. Neu-Guinea: Epipyt auf Bäumen am Minjen-Tor, ca. 100 m ü M. (Schlechter n. 16223. — Blühend im Juli 1907); auf Bäumen am oberen Nuru, auf dem Wege vom Ramu zur Küste, ca. 400 m ü M. (Schlechter n. 44185. — Blühend im Februar 1902); auf Bäumen in den Wäldern des Ibo-Gebirges, ca. 1000 m ü M. (Schlechter n. 17087. — Blühend im December 1907, n. 18278. — Blühend im September 1908); auf Bäumen in den Wäldern am Njinge bei Ambo, ca. 600 m ü M. (Schlechter n 18123. — Blühend im August 1908); auf Bäumen in den Wäldern des Bismark-Gebirges, ca. bei 300 n ü M. (Schlechter n. 18515 — Blühend im October 1908); auf Bäumen in den Wäldern bei Jaduna, am Waria, ca. 200 m ü M. (Schlechter n. 19324. — Blühend im April 1909); im Gebüsch windend, in den Wäldern des Mimi, am Waria, ca. 650 m ü M. (Schlechter n. 17412. — Blühend im März 1908); auf Bäumen in den Wäldern des Dischore-Gebirges, ca. 1000 n ü M. (Schlechter n.19625. — Blühend im Mai 1909). Nächst H. hellwigiana Warb. ist diese Art die verbreitetste im Gebiete. In des Form der Blätter ist sei auch einiger Variation unterworfen, die sich aber nicht in soweiten Grenzen bewegt wie bei H. hellwigiana Warb. Die Blütenmerkmale dagegen scheinen recht beständige zu sein. Charakteristisch für die Art ist die ringartige Verdickung auf der Innenseite zu Grunde etwas eingepreszt ist. Die Blüten sind weisz mit rosenroter Mitte.

Translation: Northeastern New Guinea: Epiphytic on trees at Minjen-Tor about 100 m. altitude (Schlechter #16223 - Blooming in July 1907); on trees on the upper Nuru, on the way from Ramu to the coast, about 440 m. altitude (Schlechter #14185 - Blooming in February 1902); on trees in the forest of the Ibo Mountains, about 1000 m. altitude (Schlechter #17087 - Blooming in December 1907; #18278 - Blooming in September 1908); on trees in the forest on the Njonge near Ambo, about 600 m. altitude (Schlechter #18123 - Blooming in August 1908); on trees in the forest of the Bismarck Mountains, about 300 m. altitude (Schlechter #18515 - Blooming in October 1908); on trees in the forest at Jaduna on the Waria, about 200 m. altitude (Schlechter #19324 - Blooming in April 1909); twining in the bushes of the forest of the Mimi on the Waria, about 650 m. altitude (Schlechter #17412 - Blooming in March 1908); on trees in the forest of the Dischore Mountains, about 1000 m. altitude (Schlechter #19625 - Blooming in May 1909).
Along with H. hellwigiana Warburg this species is the most widespread in the province (district). In the form of the leaves it has a few variations that are not enlarged to such a degree in H. hellwigiana Warburg. Characteristics on the other hand seem to be rather constant (fixed). The ringlike thickening on the inner side of the corolla above the base is characteristic of the species. This is formed by means of the corolla being pressed inward at the bottom. The blooms are white with a rose-red middle.

Comments: The ring-like thickening referred to by Schlechter on the inner corolla base is typical of several other species in this section. It is found on Hoya micrantha Hooker and is especially pronounced in the species Hoya plicata King & Gamble.

In Hoya Section Acanthostemma (Blume) Kloppenburg (1990) 20-23. R. D. Kloppenburg. Hoya anulata Schlechter in K. Schumann and K. Lauterbach "Nachträge zur Flora der Deutschen Schutzgebiete in der Südsee (1905) 362.
            Epiphytica in arboribus ramosa, nunc alte scandens, nunc dependens; ramis ramulisque elongatis, flexuosis, teretibus, glabris, radicantibus, laxe foliatis; foliis patentibus patulisve ellipticis vel oblongo ellipticis obtusis, nunc obtuse acuminatis, utrinque glabris, nervis vix conspicuis, textura carnoso-coriaceis, 6-8 cm. longis, medio fere 4-4.5 cm. latis; pedunculis crassiusculis, ca. 4 cm. longis, rhachide incrassata, demum cylindrica; umbella multiflora; pedicellis gracilibus, filiformibus, glabris, 2 cm. longis; calycis segmentis ovatis obtusculis, glabris, ca. 0.1 cm. longis; corolla rotata 0.8 cm. diametiente, lobis ovatus acutis, apice recurvis, extus glabris, intus dense et minute papilloso-puberulis, corolla intus medio anulo paulo incrassato, glabro, 5-lobulato ornato; coronae foliolis horizontalibus carnosis; superne oblongis obtusis, apice breviter et acute acuminatis, medio incrassatis, subtus (dorso oblongis, medio longitudinaliter foveolatis); antheris late trapezoideis, appendice hyalina parvula, ovata obtusa; polliniis oblique oblongis, translatoribus brevibus, retinaculo rhomboideo polliniis multoties minore; stigmatis capite breviter conico.
            Kaiser-Wilhelmsland: Auf Bäumen am oberen Nuru auf dem Wege vom Ramu zur Küste. alt. ca. 400 m (R. Schlechter n. 14185, Bl. Feb. 1902).
            Durch den eigenartigen etwas verdickten Ring am Grunde der Abschnitte der Korolla kann diese Art von den verwandten leicht unterschieden werden. Die Blüten sind weisz und besitzen eine rosenrote Korona.

In Austrobaileya 3(4) (1990) 639-640. “ Taxonomic Studies on the Genus Hoya R. Br. (Asclepiadaceae) in Papuasia”. P. I. Forster & D. J. Liddle. 3. Typification and synonymy of Hoya anulata Schltr.
Hoya anulata Schltr. in Schumann & Lauterb., Nachtrage Fl. Schutzgeb. Südsee 362 (1905). Type: Papua New Guinea. Madang Province: Auf Baümen am oberen Nuru, aut dem Wege vom Ramu zur Küste, 4 February 1902, R. Schlechter 14185 (holo: B!).
Schltr., Bot. Jahrb. Syst. 50: 118 (1913).
Hoya schlechteriana S. Moore, Trans. Linn. Soc. 9: 112 (1916), synon. nov. Type: Irian Jaya. Camps III‑VI, 1912‑13, Utakwa River to Mt Carstensz, C. B. Kloss (holo: BM!).
Hoya poolei C. White & Francis, Proc. Roy. Soc. Queensl. 39: 69, fig. 13 (1928) synon. nov. Type: Papua New Guinea. MADANG PROVINCE: Joangey, South eastern end of Finnisterre Range, December 1923, C.E. Lane‑Poole 566 (holo: BRI!; iso:
Hoya pseudolittoralis Norman, Brittonia 2: 328 (1937), synon. nov. Type: Papua New Guinea. WESTERN PROVINCE: Dagwa, Oriomo River, Feb‑March 1934, L.J. Brass 5990 (holo: NY n.v.; iso: A!, BM (photo at BRI!), BO!, BRI!).
Hoya alata K. Hill, Telopea 3: 249 (1988). synon. nov. Type: Australia, Queensland
Cook District: Pascoe River rockpile, B. Wallace 83250 (holo: NSW, n.v.).
Hoya sp., Jones & Gray, Austral. climbing Pl. Fig. 126 (1977).
[Hoya gracilipes auct. non Schltr.: Jones & Gray, Climbing Pl. Austral. 242 (1988)]. Forster & Liddle, Austrobaileya 3: 228‑230 (1990).
Additional specimens examined. Irian Jaya. Orob River, Feb 1913, Pulle 1202 (BO,L). Papua New Guinea. Western Highlands Province: Baiyer River, Nov 1954, Womersley & Floyd NGF6809 (Lae) Morobe Province: 4 miles[6.7 km] NE of Boana, near Guambot, 6º 30’5, 146º 50 E, Mar 1977, Conn et al. 70 (CANB,K,LAE) Boana, Jul 1938, Clemens 8480 (A,B,L); ditto, May‑Nov 1940, Clemens 41725 (A,BRI), Bupu Village above Wampit River Mar 1964 Millar NGF23296 (A,BRI,CANB,L LAE); Ekwap, Wantoat, Aug 1968, Millar NGFI 12130 (L,LAE); Wantoat, Jun 1957, White NGFG523 (LAE), Patep, Mar 1959, Millar NGF9904 (BRI,, Wareo, Jan 136, Clemens 1521 (A); Finnisterre Range, Ekwap, near Wantoat, Aug 1968, Philipson 3305 (A,L), Zenag, 7º 000’. 146º 35’E, May 1969, Millar NGF40862 (LAE). Gulf Province: near Iori Village, Ihu, Apr 1971, Stone 10143 (L,LAE). Australia. Queensland. Cook District: Garraway Creek rockpiles, Apr 1988, Forster 4234 & Liddle ; South Pap, Tozers Gap, Iul 1991, Forster 907Y (BRI)

Notes: Examination of the type specimen of H. anulata Schltr. has found it to be conspecific with H. pseudolittoralis Norman (Forster & Liddle 1990). H. anulata is widely distributed in New Guinea, but has only been found in the Tozer Range area of Queensland.
Of importance with respect to the synonymy for this taxon, is H. poolei C. White & Francis which was applied by Liddle (1986) to the Australian material. Both the BRI holotype and the K isotype of H. poolei lack flowers; however, the foliage is a good match for those of H. anulata (based on the range of specimens examined) and the flowers figured by White and Francis (1928) agree with those of this taxon.
Isotype specimens of H. alata K. Hill have yet to be examined, despite repeated quests to NSW for their distribution.

In Hoyas of Northeastern New Guinea (1992) 45-46. R. D. Kloppenburg. “Translation of Botanische Jahrbücher 50 (1913) 118 R. Schlechter”. 22. H anulata Schltr. (1905) p. 362.
Northeastern New Guinea: Epiphytic on trees at Minjen-Tor about 100 m. altitude (Schlechter #16223 - Blooming in July 1907); on trees on the upper Nuru, on the way from Ramu to the coast, about 440 m. altitude (Schlechter #14185 - Blooming in February 1902); on trees in the forest of the Ibo Mountains., about 1000 m. altitude (Schlechter #17087 - Blooming in December 1907; #18278 - Blooming in September 1908); on trees in the forest on the Njonge near Ambo, about 600 m. altitude (Schlechter #18123 - Blooming in August 1908); on trees in the forest of the Bismarck Mountains, about 300 m. altitude (Schlechter #18515 - Blooming in October 1908); on trees in the forest at Jaduna on the Waria, about 200 m. altitude (Schlechter #19324 - Blooming in April 1909); twining in the bushes of the forest of the Mimi on the Waria, about 650 m. altitude (Schlechter #17412 - Blooming in March 1908); on trees in the forest of the Dischore Mountains, about 1000 m. altitude (Schlechter #19625 - Blooming in May 1909).
Along with H. hellwigiana Warburg this species is the most widespread in the province (district). In the form of the leaves it has a few variations that are not enlarged to such a degree in H. hellwigiana Warburg. Characteristics on the other hand seem to be rather constant (fixed). The ringlike thickening on the inner side of the corolla above the base is characteristic of the species. This is formed by means of the corolla being pressed inward at the bottom. The blooms are white with a rose-red middle.

In The Asclepiadaceae Works of Schlechter (1992) 30. by A. Nicholas. H. anulata Schlechter (Schlechter 14185) – 33.

In Dr. Schlechter’s Hoya Species (1993) 30-31. R. D. Kloppenburg. Hoya anulata Schlechter - in K. Schumann and Lauterbach, Addendum (1905) p. 362.
Northeastern New Guinea: Epiphytic on trees at Minjen-Tor about 100 m. altitude (Schlechter #16223 - Blooming in July 1907); on trees on the upper Nuru, on the way from Ramu to the coast, about 440 m. altitude (Schlechter #14185 - Blooming in February 1902); on trees in the forest of the Ibo Mountains, about 1000 m. altitude (Schlechter #17087 - Blooming in December 1907; #18278 - Blooming in September 1908); on trees in the forest on the Njonge near Ambo, about 600 m. altitude (Schlechter #18123 - Blooming in August 1908); on trees in the forest of the Bismarck Mountains, about 300 m. altitude (Schlechter #18515 - Blooming in October 1908); on trees in the forest at Jaduna on the Waria, about 200 m. altitude (Schlechter #19324 - Blooming in April 1909); twining in the bushes of the forest of the Mimi on the Waria, about 650 m. altitude (Schlechter #17412 - Blooming in March 1908); on trees in the forest of the Dischore Mountains, about 1000 m. altitude (Schlechter #19625 - Blooming in May 1909).
Along with H. hellwigiana Warburg this species is the most widespread in the province (district). In the form of the leaves it has a few variations that are not enlarged to such a degree as in H. hellwigiana Warburg. Characteristics on the other hand seems to be a rather constant (fixed). The ring like thickening on the inner side of the corolla above the base is characteristic of the species. This is formed by means of the corolla being pressed inward at the bottom. The blooms are white with a rose-red middle.

Hoya anulata Schlechter, 4/2/1902, Type # 14185 (B)