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Taiwan Gramineae | Family List | Poaceae | Isachne

Isachne kunthiana (Wight. et Arn.) Nees ex Steud., Syn. Pl. Glum. 1: 96. 1854. Senaratna, 1. c. 108. 1956; Bor, 1. c. 581. 1960; Hsu in Taiwania 16: 271. 1971, Taiwan Grass. 475. pl. 132. 1975; Hatusima, l. c. 646. 1971, Gilliland, l. c. 122. col. pl. 3. 1971.


Isachne kunthiana

Credit: CC Hsu, 1975 Taiwan Grasses

Isachne firma sensu Hayata, l. c. 7: 57. 1918; Honda, l. c. 279. 1930.
Isachne schmidii Hack., Bot. Tidsskrift 24: 97. 1901; Ohwi, Fl. Jap. 151. 1956.
Isachne commelinifolia Warb., Ohwi, l. c. 11: 55. 1942.

Culm long creeping, flowering branches 10-20 cm tall. Blade lanceolate to ovate-lanceolate, 1.5-3 cm long by 7-9 mm wide, base cordate, margins prominently thickened; sheath margins ciliate, slightly shorter than the internode; ligule a ring of hairs, about 1.5 mm long. Panicle 3-4 cm long, stout; pedicel clavate at the apex. Spikelets elliptical, grayish-green, obtuse, 2-2.3 mm long; glumes similar, rigid-hispid, ovate, exceeding the floret, subequal; lower glume slightly longer, convexed, 9-11-nerved, nerves scabrous. Florets similar, ovate or elliptical, obtuse, 1/4 to 1/3 as long as the glumes, glabrous or the lemmas slightly hispid on the inrolled margins; anther about 1 mm long.

TAIPEI: Chihsinshan, Hsu 5081; Kankou, Sasaki s. n. Nov. 1932*. ILAN: Suao, Masamune s. n. Apr. 27, 1938. TAITUNG: Hsinkang, Suzuki 19748; Tsusueipo, Hsu 3436. HUALIEN: Yuli, Suzuki 19788.

Distributed in swampy grounds in mountain regions in South India, Ceylon and Southeast Asia generally.

Locally this species is found in moist ground at low elevations along forest margins.

leaf surface 表面: (sha)upper surface with shallow notch
between the veins

sclerenchyma 厚壁組織: (boscl)(bostr)on both sides of veins as
strand or girder

chlorenchyma 葉綠組織: (isach)cells elongate and radiate upward
like crab legs

bundle sheath 維管束鞘: (nks)bundle sheaths with
small amount of chloroplast

buliform cells not well developed 泡狀細胞不發達: (smreg)epidermal cells gradually enlarge
from vein to intervein

chlorenchyma cell number between two adjacent veins: 10

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (lit)with a little of chloroplast

mestome sheath 內束鞘細胞: (Xyms+)metaxylem pole adjacent with
mestome sheath

distance between two adjancent vein 脈間距: 240 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 4

chlorenchyma cell shape in LS 葉綠細胞縱面形狀: non -lobed


Related Objects  
  • Image/JPEG (CC Hsu, 1975 Taiwan Grasses)
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