Prev Taxon: Genus Bulbophyllum section Oxysepala
Current Genus: Genus Bulbophyllum section Papulipetalum
Next Taxon: Genus Bulbophyllum section Pedilochilus
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 784
Type: Schlechter 19778 (holo B, lost)
Synonyms:
- Bulbophyllum rupestre J.J.Sm., Meded. Rijks-Herb. 23 (1915) 12
- Type: Pulle 1091 (holo L; iso BO)
Epiphyte, very small. Rhizome short. Roots filiform, flexuose, glabrous. Pseudobulbs obliquely ovoid, 4-6 mm by 0.3-0.4 cm below the middle; 1-leaved. Leaf erect, ligulate, obtuse, glabrous, 1.2-2.3 by 0.4-0.6 cm near the middle; base narrowed. Inflorescence 1-flowered, filiform, with a few small peduncle-scales. Floral bracts very small, much shorter than the pedicellate ovary. Flower erect. Sepals narrowly lanceolate, acute, glabrous. Median sepal 1.2 cm long. Lateral sepals oblique, c. 1.35 cm long. Petals broadly ovate, glabrous, 0.3 cm long; apex terminating in a semiorbicular, finely warty lobule. Lip curved, fleshy, ovate tongue-shaped, obtuse, as long as the petals. Column short; stelidia triangular, acute, sublobulate. Anther reniform-cordate, umbonate, glabrous. Pedicel and ovary slender, glabrous, 1.5-2 cm long. (After Schlechter, 1913)
Flower whitish. Median sepal spotted red all over. Lateral sepals spotted red only at the base. Petals with 2 rows of red spots. Lip spotted red. Column golden yellow.
Epiphyte in lower montane forest; terrestrial on shale; 1300-2400 m.
Malesia (New Guinea).
Papua (Indonesia); Papua New Guinea; see map
Intermediate growing epiphyte.
February, June, October.
- Smith, J.J., Nova Guinea 12, 4 (1916) 380, t. 137, fig. 258, as Bulbophyllum rupestre J.J.Sm.
- Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 263, fig. 1004
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Bulbophyllinae
- Genus Bulbophyllum
- Section Papulipetalum
- Species Bulbophyllum rivulare
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Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, oblique front view, photo E.F. de Vogel, Leiden cult. 20032300
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, lateral view from above, photo E.F. de Vogel, Leiden cult. 20032304
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flowers, photo E.F. de Vogel, Leiden cult.
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., plant habit, photo E.F. de Vogel, Leiden cult. 20032300
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, front view, photo E.F. de Vogel, Leiden cult. 20032300
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., plant habit, photo P. Jongejan, collection Royal Botanic Gardens, Kew, cult. P. Jongejan 3001
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, oblique lateral view, photo E.F. de Vogel, Leiden cult. 20032300
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., plant habit, photo E.F. de Vogel, Leiden cult.
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, front view, photo E.F. de Vogel, Leiden cult. 20032304
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, lateral view, photo A. Schuiteman, Leiden cult. 20032304
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., flower, oblique lateral view, photo A. Schuiteman, Leiden cult. 20032304
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., J.J. Vermeulen, sketch, flower analysis, based on Reeve 983 (L)
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., floral analysis, drawing J.J. Smith, from Pulle 1091
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 263, fig. 1004
Bulbophyllum rivulare
Bulbophyllum rivulare Schltr., herbarium sheet, Pulle 1091 (isotype specimen BO)