e-Flora of Thailand

Volume 6 > Part 4 > Year 1998 > Page 433 > Cyperaceae > Scleria

6. Scleria levis Retz.wfo-0000551175

Obs. Bot. 4: 13. 1786; J.Kern, Reinwardtia 6: 72. 1961; Blumea 11: 164. 1961; in Fl. Males., Ser. 1, Spermat. 7: 732, f. 104, 6. 1974; Raymond, Dansk Bot. Ark. 23: 365. 1966; Hô, Câyco Viêtnam III. 2: 709. 1993. Plate XXX: 2.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Scleria hebecarpa Nees in Wight, Contrib. Bot. Ind. 117. 1834; C.B.Clarke in Hook.f., Fl. Br. Ind. 6: 689. 1894; Camus in Fl. Gén. I.-C. 7: 167. 1912.
Scleria japonica Steud., Syn. Pl. Glum. 2: 169. 1855; Camus in Fl. Gén. I.-C. 7: 168, 1912.
Scleria hebecarpa var. pubescens (Steud.) C.B.Clarke, 1.c.: 689. 1894.— S. pubescens Steud., Syn. Pl. Glumac. 2: 168. 1855.


Description : Rhizomatous perennial; rhizome woody, creeping. Culms 30–90 cm by 1–3 mm, triquetrous, glabrous to puberulent. Leaves cauline; blade linear, 18–35 cın by 2–8(–12) mm, gradually narrowed, acute, flat; sheath 5–8 cm long, winged, green to reddish or purplish brown; contraligule shallowly rounded, pubescent. Lowest involucral bract leaf-like, up to 13 cm long, upper bracts and bracteoles prominent, setaceous. Inflorescence paniculate, open to compact, sometimes appearing head-like, 5–13 by 1.5–2.5 cm; nodes 3–4, each subtending a single partial inflorescence; partial inflorescence sessile or shortly pedunculate, ovate-lanceolate, 2–8 cm long. Spikelets female and male in groups of 2–4; female spikelets sessile, obovoid, 4–6 mm long; male spikelets pedunculate, oblong-lanceolate, 3–4 mm long. Glumes ovate, 2–4 mm long, acuminate, sides membranous, mid-brown to chestnut brown. Stamens 3. Nutlets globose, ± terete, 1.7–2.5 by 1.7–2.5 mm, rounded, white, smoothish, pubescent to glabrous; disk 3 lobed, the lobes lanceolate, acute, minutely toothed at apex.


Thailand : NORTHERN: Mae Hong Son, Chiang Mai (Ob Luang, Doi Inthanon, Doi Suthep), Chiang Rai, Lamphun, Lampang (Huai Tak), Tak, Kamphaeng Phet; NORTH-EASTERN: Udon Thani (Phu Phra Bat), Khon Kaen; EASTERN: Chaiyaphum, Nakhon Ratchasima (Pak Thong Chai); CENTRAL: Saraburi; SOUTH-WESTERN: Kanchanaburi (Huai Bankan), Ratchaburi; SOUTH-EASTERN: Chon Buri, Chanthaburi (Makham), Trat; PENINSULAR: Surat Thani, Nakhon Si Thammarat (Wat Khiri Wong), Trang (Ton Teh), Satun, Songkhla (Ton Nga Chang).


Distribution : India (type), Sri Lanka, through Indochina to central Japan, Malesia, Australia and New Caledonia.


Ecology : Savanna grasslands, floors of open forests, and margins of rice fields, 0–1,500 m alt.


Vernacular : Ya sam khom (หญ้าสามคม)(Northeastern); ya khom bang (หญ้าคมบาง)(Southeastern).


Main
Plate XXX: 3
Scleria levis Retz.