e-Flora of Thailand

Volume 16 > Part 2 > Year 2023 > Page 741 > Zingiberaceae > Zingiber

58. Zingiber zerumbet (L.) Sm.wfo-0000618238

Exot. Bot. 2: 105. 1805; Stokes, Bot. Mat. Med. 1: 66. 1812; Sims, Curtis’s Bot. Mag. 45: t. 2000. 1843; Baker, Fl. Brit. India 6: 247. 1892; Schumann, Pflanzenr. IV, 46 (Heft 20): 172. 1904; Merr., Enum. Philipp. Fl. Pl. 1: 229. 1923; Theilade, Gard. Bull. Singapore 48: 227. 1996; Nordic J. Bot. 19(4): 404. 1999.— Amomum zerumbet L., Sp. Pl. 1: 1. 1753. Plate LXXXVIII: C.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Zingiber aromaticum Valeton, Bull. Jard. Bot. Buitenzorg (series 2) 27: 131. 1918.


Description : Rhizomatous herb 1–1.8 m tall; rhizome thick, yellow, smelling of turmeric. Leaf sheaths green; ligule thin, papery, 2–3 cm long, appressed to leafy shoot, entire, dry and scarious; blades 11–20, obovate to oblong-lanceolate, 35–42 by 9–11 cm, sessile. Inflorescences 1–2, radical; peduncle erect, sheaths 15–22 cm long, yellowish green or dull red; spike oblong, 7–15 cm long, base obtuse, apex acute, floral bracts 50–70, imbricate; bracts orbicular or obovate, 3.5–3.8 by 2–3.5 cm, green turning red, apex rounded, pubescent; bracteoles elliptic, 2.4–2.8 by 1–1.8 cm, sparsely hairy on upper surface. Flower cream-white or pale yellow; ovary globose, 3–4 by 3–4 mm; calyx 1.7–2 cm long, tube ca 0.7 cm long, lobe ca 1.1 cm long, apex truncate, sparsely hairy; floral tube 2.8–3.4 cm long, glabrous, dorsal corolla lobe 1.7–2 by 0.8–1 cm, lateral corolla lobes 1.6–1.9 by 0.4–0.5 cm; labellum cream or cream with brown patches at base, midlobe rounded or elliptic, 1.1–1.9 by 1.1–2.2 cm, apex bilobed, lobes 3–4 mm, side lobes 7–9 by 4–9 mm, apex obtuse; stamen: filament ca 2 mm; anther ca 1 by 0.3–0.5 cm, anther crest cream, 6–7 mm long. Fruit unknown.


Main
Key to the subspecies
1. Plant more than 1.3 m tall. Labellum cream or pale yellow without patches   a. Zingiber subsp. zerumbet
1. Plant to 1.3 m tall. Labellum cream or pale yellow with brown patches at base   b. Zingiber subsp. cochinchinense

Plate LXXXVIII: C
Zingiber zerumbet (L.) Sm.
Preecha Karaket (Huai Khakhaeng, Uthai Thani)
Preecha Karaket (Huai Khakhaeng, Uthai Thani)