Globba flagellaris K.Larsen

Sangvirotjanapat, Sunisa, Denduangboriphant, Jessada & Newman, Mark F., 2019, A taxonomic revision of Globba subsect. Nudae (Zingiberaceae), European Journal of Taxonomy 503, pp. 1-37 : 19-20

Globba flagellaris K.Larsen

Figs 2C , 6 , 7 H–K

Nordic Journal of Botany 17: 119 (Larsen 1997).

Type material

Holotype THAILAND • Mae Hong Son, Doi Pui ; 19°13′0″ N, 98°2′0″ E; 800 m a.s.l.; 23 Sep. 1995; K. Larsen, S.S. Larsen, C. Tange and D. Sookchaloem 46843 leg.; AAU.

Isotypes

THAILAND • Same data as for the holotype; MO, L, K .

Other material examined

THAILAND – Chiang Mai • Bo Luang, 20 km W of Bo Luang towards Mae Sariang ; 4 Jul. 1968; K. Larsen, T. Santisuk and E. Warncke 2100 leg.; AAU, C, E, K, P • Doi Pui, Huai Mae Sa Kut to Huai Thond road; 6 Aug. 2000; K.J. Williams 00–347 leg.; E . – Mae Hong Son • Ban Nam Kat , edge of forest near stream; 5 Aug. 2000; K.J. Williams 00–343 leg. E • Khun Yuam, Mae Yum Luang waterfall; 6 Aug. 2000; K.J. Williams 00–354 leg.; E • Khun Yuam ; 5 Sep. 1974; K. Larsen and S.S. Larsen 34168 leg.; AAU ). – Nan • Amphoe Ban Wang Luang, near Tham Lod ; 5 Aug. 2000; K.J. Williams 00–338 leg.; E. – Non wild collected material • 1 Dec. 1970; S.N. Chong s.n. leg.; Royal Botanic Garden Edinburgh acc. no. 19991624, vouchered as ‘M.F. Newman and J. Škorničková 2048’; E.

Description

Herb (20–) 50–100 cm tall with erect, flattened, leafy stems and prostrate, leafless stems running ca 75 cm along the ground to produce bulbils which take root. Leaf sheaths 3–5 bladeless; ligule 5–6 mm long, truncate to bilobed, glabrous to minutely ciliate; blades 6–8, 15–20 × (3.5–) 6–8 cm, usually broadly elliptic, sometimes narrowly so, base cuneate to decurrent, apex caudate, glabrous, petiole 2–5 mm long. Inflorescence 10–30 × 7–18 cm, lax, conical, elongating greatly at anthesis; peduncle to 15 cm long; rachis glabrous; bracts 3–12 mm long, caducous, bracteoles persistent, triangular, glabrous to minutely pubescent; cincinni 3.5–15 cm long; pedicel to 6 mm long. Flowers 3.3–3.6 cm long, ovary and calyx green, the rest pure orange; ovary ca 3 mm long (⚥), ellipsoid, ridged; calyx 3–5 mm long, infundibuliform, lobes acuminate, margins sparsely pubescent; floral tube ca 15 mm long, minutely pubescent, dorsal and lateral corolla lobes 6–7.5 × 3–4 mm, hooded, the dorsal one slightly larger, the lateral lobes usually concealed by the lateral staminodes; lateral staminodes 12–15 × 5–9 mm, obovate, usually very large, apex round; labellum triangular, 10–12 mm long, bilobed for ¼–½ its length, spot absent, base truncate, apex obtuse, nectar tube ca 4.5 mm long; filament ca 27 mm long, minutely pubescent; anther 1–2 mm long, connective tissue, crest and appendages orange, semi-translucent, crest ca 1 mm long (shorter in Ƌ), truncate; ⚥ appendages ca 3 mm long, acuminate, bifid, upper pair bigger, decurrent to connective tissue and crest, lower pair smaller; Ƌ appendages ca 3 mm long, acuminate, bifid to halfway, upper pair only slightly bigger than lower. Fruit 20–27 × 8–10 mm, ellipsoid, triangular in cross section, longitudinally ridged, green. Bulbils occasional, subtended by sterile bracts below lowest cincinnus, spindle-shaped with prolonged shoot, tissue corky; also on flagellate stems.

Distribution and habitat

Chiang Mai, Mae Hong Son, and Nan provinces, Thailand, 450–1100 m a.s.l. It grows in dense populations in rather moist areas, often near streams.

Conservation status

Least Concern. Globba flagellaris has a small area AOO of 32 km 2 and EOO of 5619 km 2, suggesting a status of Vulnerable. As it grows in protected areas, however, as well as ex situ in Queen Sirikit Botanic Garden, it is therefore of Least Concern.

Figures

Fig. 2. Globba subsect. Nudae K.Larsen. A. G. aranyaniae Sangvir. & M.F.Newman sp. nov. (S. Sangvirotjanapat 785 leg.). B. G. expansa Wall. ex Horan. (M.F. Newman 2561 leg.). C. G. flagellaris K.Larsen (M.F. Newman and JLS 2048 leg.). D. G. insectifera Ridl. (S. Sangvirotjanapat s.n. leg.). E. G. lithophila Sangvir. & M.F.Newman sp. nov. (M.F. Newman 2576 leg.). F. G. macrochila Sangvir. & M.F.Newman sp. nov. (S. Sangvirotjanapat 795 leg.). Photographs: S. Sangvirotjanapat.

Fig. 6. Distribution range of G. aranyaniae Sangvir. & M.F.Newman sp. nov. (circles), G. flagellaris K.Larsen (squares), G. lithophila Sangvir. & M.F.Newman sp. nov. (triangles), G. macrochila Sangvir. & M.F.Newman sp. nov. (stars). The type locality of each species is indicated by a bigger symbol.

Fig. 7. A–G. G. expansa Wall. ex Horan. A. Habit. B. Inflorescence. C. ç (above) and Ƌ (below) appendages. D. ç flower. E. Ƌ flower. F. Ligule. G. Mature fruit with seed (M.F. Newman 2561 leg.). H–K. G. flagellaris K.Larsen. H. Habit. I. ç flower. J. Fruit. K. Bulbils (M.F. Newman 2581 leg.). Photographs: S. Sangvirotjanapat.