Hoya alagensis (Shltr.) Kloppenburg 1990
Type description:
In Fraterna (International Hoya Association) 1 (1990) I. R. D. Kloppenburg. Hoya alagensis Kloppenburg sp. nov.
Type sheet #5542 collected by Elmer D. Merrill on the Alag River, Mindoro, Philippines November 1906 in the forest at 150 m altitude. Flowers purplish, odorless. Berlin (B) Holotypus. This is Schlechter's unpublished Hoya alagensis. ex. spec.
Volubilis scandens 6 m vel plus, ramis teretibus glabrous, carnosisculis, foliis patentibus ovatis‑lanceolatis, basi rotundus, apice acutis ad rostratis, 11 x 4-5.5 cm. latis, utrinque glaberrimis, non carnosus, venis utrinque 4-6 ascendentibus, reticulatus, costa crassa recta infra prominens. Petiolo carnosulo glabro 3.0 cm. longis, 0.2 cm. diametro, curvus, teretibus. Pedunculo 4.0 cm. longis, glabrus, 0.2 cm. diametro, rachi incrassata 0.4 cm. diametro abbreviate. Pedicellis filiformibus, pubescentes ad 5.0 cm. vel plura longis. Calycis segmentis hirsutis, 0.25 cm. longis, leviter imbricatus, ovatus obtusis, ligulea praesentia. Corolla lobis late ovatis acutis ad apiculatis, profunde lobatis. Corona foliolis superne ovatus, apice anteriore breviter rostratis, apice posteriore breviter excisis, medio gibbo linear breviore longitudinaliter donato, subtus longitudinaliter foveolatis.
This species has foliage similar to H. angustisepala Burton and the coronas are somewhat similar in having the outer apex slightly re‑curved and blunt. Even the corolla lobes are similarly shaped, however the sepals are entirely different. It differs from other known Philippine species. I have retained Schlechter's area name.
Translation: see under Dr. Schlechter’s Hoyas below.
Other literature:
In The Asclepiadaceous Works of Friedrich Richard Rudolf Schlechter (1992) 30. A. Nicholas. H. alagensis Schlechter ex Kloppenburg (Merrill 5542) - +
In Dr. Schlechter’s Hoya Species (1993) 24-25. R. D. Kloppenburg. Hoya alagensis Kloppenburg. H. alagensis Schlechter (unpublished).
A climbing twitter 6 meters or more, branches round glabrous, somewhat fleshy, leaves outspread ovate‑lanceolate, with the base rounded, apex acute and beaked, 11 cm long by 4.5‑5 cm. wide, both surfaces glabrous, not fleshy, veins on both sides 4‑6 ascending, reticulate, costa (midrib) thick prominently raised below. Petiole fleshy glabrous 3.0 cm. long. 0.2 cm. in diameter, curved, round. Peduncle 4.0 cm. long, glabrous, 0.2 cm. in diameter, rachis abbreviated threadlike 0.4 cm. in diameter. Pedicels threadlike, pubescent near 5.0 cm. long or longer. Segments of the calyx hirsute 0.25 cm. long slightly overlapping, ovate obtuse, with lobules present. Corolla lobes broad ovate acute, near apiculate, definitely lobed. Corona scales ovate above, inner apex shortly beaked, outer apex shortly excised, in the middle with a hump and longitudinal ridge, below longitudinally channeled.
This species has foliage similar to H. angustisepala Burton and the coronas are somewhat similar in having the outer apex slightly recurved and blunt. Even the corolla lobes are similarly shaped, however the sepals are entirely different. It differs from other known Philippine Hoya species. Published by Dale Kloppenburg in: 1990 Fraterna Publication of the International Hoya Association, 3rd. Quarter.
In Philippine Hoya Species 3 (1996) 29-30. R. D. Kloppenburg. Hoya alagensis Kloppenburg in Fraterna 1 #1 fall 1990. #5542 (B) found by Elmer D. Merrill on the Alag river, Mindoro, Philippines Nov. 1906 in the forest at 150 m. Flowers purplish and odorless.
A twining climber 6 m. or more long, branches terete and glabrous, somewhat fleshy and large. Leaves outspread with rather curved long glabrous petioles (3 cm. x 0.2 cm. in diameter), ovate lanceolate bases somewhat rounded, apex sharply acute to rostrate, 11 x 4‑5.5 cm., not carnose, 4‑6 veins on both sides of the midrib, ascending, reticulate, costa prominent on the underside, straight. Peduncle 4 cm. long, glabrous 0.2 cm. in diameter, perennial, enlarged toward the rachis, which is also enlarged, 0.4 cm. in diameter. Pedicels filiform to 3.5 cm. or more long. Calyx segments hirsute 0.3 cm. long, slightly overlapping at the base, ovate obtuse with ligules present. Corolla broadly ovate with acute to apiculate apex, deeply lobed. Corona scales above ovate in outline, inner apex shortly beaked, outer apex rounded with a longitudinal ridge on top, not fully channeled below. Pollinaria with long narrow pollinia, short translators and a small narrow retinaculum.
Meaning: alagensis—From the Alag River, Mindoro, Philippines.
Hoya alagensis (Schlechter) Kloppenburg, 1990, Type # 5542 (B)