Volume 16 > Part 2 > Year 2023 > Page 608 > Zingiberaceae > Hornstedtia

1. Hornstedtia conica Ridl.wfo-0000442812

J. Straits Branch Roy. Asiat. Soc. 32: 142. 1899; Holttum, Gard. Bull. Singapore 13: 175. 1950; Turner, Asian J. Trop. Biol. 4: 34. 2000. Plate LXX: B.

Accepted Name : This is currently accepted.

Description : Perennial herb to 3 m tall; rhizome slender, often above ground. Leafy stem with swollen base; leaf sheaths finely ribbed with cross bars, basal part grey-green, upper sheaths sometimes reddish; ligule lanceolate, to 2 cm long, ribbed, glabrous, apex acute; blade lanceolate, ca 50 by 9 cm, glabrous on both surfaces, dark green, midrib yellowish beneath and sometimes also in the groove of midrib above, base truncate, apex caudate; petiole 2 cm long, glabrous. Inflorescence radical, ca 20 cm distant from leafy stem, entirely above ground, fusiform with long slender tip, ca 11 cm long; peduncle ca 3.5 cm long; involucral bracts lanceolate, 2.5–8 by 3–3.5 cm, finely ribbed, with appressed hairs, apex acute, pale pink with dull red edges; bracts ovate-lanceolate, ca 9.5 by 2 cm, narrowly tapering to apex, apex blunt with short stiff point, glabrous; bracteoles narrowly lanceolate, ca 4 by 0.6 cm, narrowly tapering to apex, glabrous. Flower: ovary 0.7–1 cm long, pubescent; calyx 5–6 cm long, in bud forming a long slender tip beyond corolla, in open flower nearly as long as corolla tube, apex unequally bilobed, split down one side by ca 2.5 cm, white, woolly; floral tube ca 5.5 cm long, glabrous, corolla lobes 2 by 0.6 cm, slightly unequal, glabrous, dorsal one hooded; labellum obovate-oblong, ca 3 by 0.5–0.7 cm, with 2 thickened median bands, pilose, apex rounded, margin wrinkled; stamen: filament ca 1.5 by 0.4 cm; anther pubescent. Infructescence as long as inflorescence but slightly broader. Fruit ca 3 cm long, of irregular cross-section, to ca 2 cm wide, on pedicel ca 3 mm long; seeds black, arillate.

Thailand : PENINSULAR: Satun (Thale Ban), Narathiwat (Waeng).

Distribution : Peninsular Malaysia (Selangor, lecto), Sarawak, Sabah, Indonesia (Sumatra, Java, Kalimantan).

Ecology : In partly shaded areas in evergreen forests, ca 400 m alt.