Tupistra grandis Ridl.

Leaves few, surrounded by several sessile lanceolate scale-like leaves to 25(-40) cm long, elliptic or sublinear to oblanceolate, acute or acuminate, cuneate at the base; lamina (50-)70-150 by 6-14 cm; petiole often winged and poorly defined, to 40 cm. Inflorescence erect, 20-50 cm long when in flower, lengthening slightly in fruit, with up to 100 or more flowers, with a strong smell. Bracts somewhat amplexicaul, ovate, 5-10 by 2-6 mm. Perianth segments violet to dark purple; tube 5-11 mm long, 5-10 mm wide; lobes darker than tube, oblong to ovate, 4-14 by 3-5 mm. Anthers sessile, attached near top of tube, 1.25-2 mm long. Style and ovary white, 7.5-16 mm long; stigma 4.5-12.5 mm ø, peltate, flat to biconvex, sometimes rugulose or irregularly lobed.

In Malaya records suggest that it usually occurs in wet rocky places on limestone. In Sumatra it grows in forest at 600-1225 m, but in Malaya there is a record of 150 m in Perak. Fl. Jan.-Dec.