Volume 16 > Part 2 > Year 2023 > Page 558 > Zingiberaceae > Globba

49. Globba pycnostachys Sangvir. & M.F.Newmanwfo-0001426348

Edinburgh J. Bot. 77(1): 46. 2020.

Accepted Name : This is currently accepted.

Description : Stout herb, 35–150 cm tall. Leaf sheaths ca 5 bladeless, sparsely pubescent, green or light brown at basal sheaths; ligule bilobed, 2–5 mm long, glabrous, light green with white margin; blades 8–12, elliptic to ovate, 3–5.4 by 12.5–27.5 cm, sparsely strigillose along midrib and veins, base obliquely obtuse, apex acuminate; sessile. Inflorescence erect, lax, linear, 16–35 by 3–11 cm, 2–4 lowest cincinni much longer than others; peduncle 3–5.5 cm long; rachis glabrous, green; bracts and bracteoles caducous sometimes persisting on condensed cincinnus, oblong to elliptic, 2–5 mm long, glabrous, green with white margin; cincinni numerous, stalked 0.3–3 cm long, upper two thirds sessile or to 1 mm long; pedicel 0.3–1 cm long (⚥), sessile to 1 mm long (♂). Flowers condensed, to 14 per cincinnus, 2.8–3.5 cm long; ovary ovoid, ca 4 by 3 mm (⚥), shallowly ridged, green; calyx infundibuliform, 3–5 mm long, trilobed with obtuse apices and glabrous margins, yellowish green; floral tube 1.1–1.6 cm long, orange, dorsal and lateral corolla lobes greenish orange, elliptic, 2–4 by 2–4.5 mm, dorsal lobe shortly mucronate at apex; lateral staminodes lanceolate, 4.5–5 by 1–1.5 mm, apex acuminate, as long as lateral corolla lobes, with glandular hairs, orange; labellum triangular, 5–6 by 6.5–7.5 mm, orange with two red spots at centre, base truncate, apex acute; nectar tube 3–4 mm long; filament ca 2 cm long, orange; anther elliptic, 1–1.5 mm long, connective tissue, crest and appendages white, semitranslucent, crest round, ca 1 mm long at tip, appendages 2, ⚥ appendages falcate, ca 3 mm long, held ± perpendicular to anther, base covering whole side of anther, apex abruptly acuminate and curved upward, margins parallel at base, upper margin straight or slightly curved, lower margin strongly curved to apex, ♂ anthers without crest, coloured as ⚥, appendages falcate, narrower than ⚥, ca 3 mm long, held at ca 45° to anthers, base covering nearly whole side of anther, apex acuminate, slightly curved, margins parallel almost to apex. Fruit ovoid, ca 1 by 0.8 cm, shallowly ridged, shiny, green. Bulbils 1–2, produced at peduncle, bamboo-like, producing one shoot, ovoid, ca 13 by 8 mm, scaly.

Thailand : SOUTH-WESTERN: Phetchaburi, Prachuap Khiri Khan (Hua Hin – type: Middleton et al. 1090, holotype -BKF, isotypes -A E).

Distribution : Endemic.

Ecology : In moist areas, 260–1,000 m alt., often in mountains.

Vernacular : Khao phansa kaengkrachan (เข้าพรรษาแก่งกระจาน), hong kan riao (หงส์ก้านเรียว).

Notes: This species is unique and easy to identify by its long and narrow inflorescence, including a flower with orange filament and white appendages. It is found only in Phetchaburi province.