1064

 Boesenbergia longiflora (Wall.) Kuntze

Synonym	:	Gastrochilus longiflorus Wall.
Family	:	Zingiberaceae
Flowering and fruiting period	:	May to September
Distribution	:	Myanmar and India
Key botanical characters: Rhizome small, irregularly shaped, c. 1 cm diam., externally brown, internally light yellow to white; multiple, small bulb-like rhizomes above the main rhizome; tuberous roots two or more, c. 8 × 0.5 cm, swelling at the terminus, c. 2 × 1 cm, externally white or pink, internally white, root hairs few, c. 20 mm long, thin, white. Leaves 5–8 per pseudostem; lamina elliptic or broadly ovate, 41–61 × 20– 21 cm, plicate, adaxially dark green, glabrous, abaxially lighter green, glabrous with a few hairs on the midrib, base rounded to cordate, sometimes asymmetric, apex acute to long acuminate. Inflorescence radical, c. 3–4 per pseudostem, up to c. 12 cm long (including peduncle) produced from the side of the rhizome; peduncle 1–3 cm long, white, glabrous, basal sheaths 1–2, pink and white, glabrous; spike horn-shaped, 5–10 × 1–2 cm; bracts 3–4, distichous, cymbiform, 5–6 × 1.5 cm, red and green, glabrous, each bract enclosing one flower. Flowers 2–3 per inflorescence, up to c. 11 cm long.