Bulbophyllum piestoglossum j.j.verm.

Upright, sympodial epiphytic orchid. Rhizome 4.5 mm diameter, covering with sheaths that disappear with age. Pseudobulbs tapered, about 3.2 cm long, 1.5 cm wide, spaced 5–6 cm apart along the rhizome, each with a single leaf. Leaves oblong to elliptic, up to 14 cm long, 5.5 cm wide; petiole 2–2.5 cm long. Inflorescence erect, 7 cm long, appearing from the base a pseudobulb with 3 basal sheaths; with a single flower, up to 5 cm across. Flowers orange-yellow with reddish brown stripes and tiny spots. Dorsal sepal lanceolate, 2.8 x 1.3 cm; petals linear, pointed at tips, 2.4 x 0.8 cm; lateral sepals ovate, keeled, 3 x 0.8 cm. Labellum fleshy, tongue-shaped, curved, 1.5 cm long, 7 mm wide.

Cootes, J. 2001. The Orchids of the Philippines. 231p. Times Editions, Singapore.
Pelser, P.B., J.F. Barcelona, & D.L. Nickrent (eds.). 2011 onwards. Orchidaceae. In: Co’s Digital Flora of the Philippines.

Bulbophyllum piestoglossum
  • Leaves 14-20 cm long; pseudobulbs at least 2 cm wide or more; 1 or up to 4 flowers per inflorescence
  • Pseudobulbs spaced up to 5-6 cm apart along the rhizome; inflorescence with a single flower
  • Flowers orange-yellow, with reddish-brown stripes and spots
  • Bulbophyllum
  • Plants with distinct pseudobulbs
  • Inflorescence arising from the base of the pseudobulb
  • Pseudobulbs without distinct nodes; only one leaf borne on each pseudobulb
  • Sympodial orchids
  • Plants with sympodial growth, the main stem made up of a series of superposed short or long swollen stems (pseudobulbs) along a rhizome; others (paphiopedilum) lacking pseudobulbs
  • Orchids (Orchidaceae)
  • Leaves with midrib not extended into tendril.
  • Plants without distinct pseudostem
  • Flowers specialized, with one petal developing into a labellum (lip) that is highly ornate and often differently colored, roots also specialized with velaman
  • Angiosperms
  • Plants producing true flowers and fruits for sexual reproduction