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Taiwan Gramineae | Family List | Poaceae | Apluda

Apluda mutica L., Sp. Pl. 82. 1753. Hsu, Fl. Taiwan 5: 616. 1978; Koyama, Grass. Jap. Neighb. Reg. 468. 1987.

水蔗草

Apluda mutica

Credit: CC Kuoh

Rhizome stout; short. Culms up to 130 cm high, basal part ascending, branching and rooting. Blade scabrous throughout, base petiolate, up to 20 cm long; ligule membranous, about 2 mm long; sheath usually longer than the internode, glabrous. False panicle up to 40 cm long; raceme single, about 8 mm long, subtended by swollen involucre. Spikelets 3 on 1-noded rachis; one sessile and the other 2 pedicellate, one of the pedicellate spikelets much reduced. Sessile spikelet about 5 mm long; callus well developed, about 1 mm long; lower glume coriaceous, usually farinose, nerves numerous, rounded on the back; upper glume boat-shaped, ; 5-7-nerved; lower lemma membranous, paleate, subequaling the spikelet; upper lemma membranous, 2/3 as long as the spikelet, entire, terminating in an awn arising from the sinus, the palea 1/3 as long as the lemma, anthers about 2 mm long.

TAIPEI: Kuanyingshan, Hsu 363. TAICHUNG: Neipu, Hsu 9285. CHANGHUA: Lukang, Kuoh 1627. CHIAYI: Wuhong, Kuoh 3930. YUNLIN: Huwei, Yamamoto 1132. TAINAN: Anping, Hsu s. n. June 1960. KAOHSIUNG: Chishan, Suzuki 5739. PINGTUNG: Oluanpi, Hsu 515; Changlo to Pinlang, Hsu 8202. TAITUNG: Botel Tobago,Chang 2276, Kuoh 4819; Sato 1068. Green Island, Huang 6914. HUALIEN: Yuli, Suzuki 5369.

Distributed from India throughout Southeast Asia to Australia.

A very common grass all over the Island in plains and hills. It is considered, to be a good fodder when it is young, but it is discarded if other more palatable grasses are available. It is often found in hedges and among bushes, also along forest margins and irrigation ditches.

midrib 中肋: (la)large:several vascular bundles

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: (radia)cells radiate and lesser than
bundle sheath cell in width

bundle sheath 維管束鞘: (sk)single bundle sheath with
conspicuous chloroplast

buliform cells not well developed 泡狀細胞不發達: (nobul)if present only along side of midrib

chlorenchyma cell number between two adjacent veins: 2

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (per)large amount and in peripheral site

distance between two adjancent vein 脈間距: 50 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: lobed


 

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