Prev Taxon: Genus Dendrobium section Fugacia
Current Genus: Genus Dendrobium Section Grastidium
Next Taxon: Genus Dendrobium section Herpetophytum
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 10; Nova Guinea 12, 1 (1913) 51, t. 14, fig. 40.
Type: Kock, de 181 (holo BO, probable, s.n.).
Synonyms:
- Grastidium rugulosum (J.J.Sm.) Rauschert, Feddes Repert. 94 (1983) 452.
Stems crowded, in cross-section elliptic, 27 cm by 1.5 mm, internodes 0.9-2.2 cm long. Leaf sheaths 0.23 cm wide. Leaves linear, twisted at the base so as to lie in one plane, 7.5-9.75 by 0.47-0.78 cm, papyraceous, apex strongly unequally bidentate. Inflorescences lateral from the stem, 2-flowered, spathe short. Pedicel and ovary 1.2 cm long. Flowers c. 2 cm across. Dorsal sepal 1.25 cm by 4.8 mm; mentum 0.43 cm long, truncate, slightly retuse. Petals 1.2 cm by 5 mm. Lip 3-lobed, when flattened 0.95 by 0.68 cm, on the lateral lobes inside with small transverse lamellae, on the midlobe transversely rugulose; midlobe 0.37 by 0.65 cm. Column 0.46 cm long; column-foot 0.43 cm long, towards the apex with 3 keels.
(after Smith, 1913).
Flower white, or sepals and petals white, lip in the centre yellow, with white or sometimes lilac margins.
Epiphyte in lowland forest, growing in the shade on smooth-barked trees. Altitude 0 to 150 m.
New Guinea (endemic).
Papua (Jayapura and Jaya Wijaya Regencies).
Warm growing epiphyte, keep in shade.
April, July.
- Smith, J.J. 1929. Nova Guinea 14, 3: 416.
Dendrobium rugulosum J.J.Sm is characterised by grass-like leaves, a 3-lobed lip without hairs, and mainly white flowers.
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Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , inflorescence, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , plant habit, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique front view, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique front view, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique lateral view, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , column and lip, oblique front view from above, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , column and lip, oblique lateral view from above, photo Ed de Vogel, Leiden cult. 20031901 (de Vogel & Vogel), from Papua New Guinea, Oro Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique front view, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , stems with inflorescence, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique front view, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique front view, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , flower, oblique lateral view, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , inflorescence at the back, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm , column and lip, oblique front view, photo Ed de Vogel, Leiden cult. 20031609 (Harris), from Papua New Guinea, Gulf Province
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm., drawing J.J. Smith, based on de Kock 181
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm., ('var. mamberamense J.J. Sm.,' inedit.), drawing J.J. Smith, based on Lam 615
Dendrobium rugulosum
Dendrobium rugulosum J.J.Sm., probably holotype specimen: de Kock s.n. (?=181) (BO)