Species Information - Bulbophyllum virescens

Bulbophyllum virescens J.J.Sm., Bull. Inst. Bot. Buitenzorg 7 (1900) 3

Type: J.J. Smith s.n. (Ambon, on the top of the Tuna) (holo BO; iso L in spirit 10264)

Synonyms:

• Cirrhopetalum leopardinum Teijsm. & Binn., Natuurk. Tijdschr. Ned.-Indië 24 (1862) 309
  - Type: Bogor cult. (Teijsmann?) s.n. (Mt. Salak)
• Cirrhopetalum maximum Ridl., J. Bot. 38 (1900) 70
  - Type: Ridley s.n. (Malay Peninsula, Perak, Bujong Malacca Hill)
• Bulbophyllum binnendijkii J.J.Sm., Orchid. Java (1905) 442
  - Type: Teijsmann & Binnendijk s.n., H.L.B. 904,44-31 (holo L)
• Bulbophyllum ridleyanum Garay, Hamer & Siegerist, Nordic J. Bot. 14 (1994) 631

Roots along the entire rhizome. Rhizome 4-10 mm diam., sections between pseudobulbs 8-24 cm long, bract fibres hardly persistent. Pseudobulbs distant, cylindrical or slightly obovoid, flattened, 7-18 by 0.8-2 cm. Petiole 4-8 cm. Leaf blade elliptic to obovate, 16-38 by 5.5-17 cm, index (length/width) 2-3.5; acute to acuminate. Inflorescence erect to patent, 15-55 cm long, a subumbellate raceme, 4-12-flowered. Peduncle 13-48 cm, bracts 7-9, the longest 18-27 mm long. Rachis 0.4-1.2 cm. Floral bracts ovate, 14-25 by 3.5-18 mm, acute. Flowers resupinate, moderately and simultaneously opening. Pedicel and ovary 10-40 mm long, basal node about flush with the surface of the rachis, ovary ribs rounded, straight. Median sepal recurved, ovate to triangular, 44-140 by 8-14 mm, index 4-10.5; long acuminate, margins entire, base narrowly attached; rather thin; glabrous. Lateral sepals free, recurved or spreading, oblique, ovate to triangular, 55-155 by 10-19 mm, index 4.1-8.1, base broadly attached, otherwise as the median sepal. Petals recurved, (ovate-)triangular, 25-60 by 6-12 mm, index 2.7-5; long acuminate, margins entire, base broadly attached; rather thin, glabrous. Lip recurved, ovate to subtriangular, widening and dorsoventrally flattened towards the base (in lateral profile highest about half-way the lip), 12-20 by 8-12 mm, index 1.1-1.6 (all without artificial spreading); obtuse to acute, rather thick and soft, glabrous or partially slightly rugose; adaxially almost flat near the base, convex and slightly furrowed towards the tip; abaxially with a weak retuse median ridge from the base to almost to the tip. Column 3.5-7 mm long, stigma inside with three keels, at its base without teeth, column foot without tooth just above the ligament. Stelidia triangular, 1-2.5 mm, narrowly triangular or subulate, usually with a small, antrorse, deltoid, obtuse to acute tooth along the upper margin, and always with a large, porrect with respect to the ovary, deltoid to semi-elliptic, rounded to subacute wing along the lower margin about half-way the column or close to the tip. Anther abaxially about glabrous and with an inconspicuous, rounded crest; front margin not drawn out, about glabrous. (After Vermeulen, ms.)

---