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Taiwan Gramineae | Family List | Poaceae | Deschampsia

Deschampsia flexuosa (L.) Trin., Mem. Acad. Imp. Sci. St.-Petersbourg, Ser. 6, Sci. Math. 4, 21 (1): 9. 1836. Hsu, Fl. Taiwan 5: 411. 1978; Koyama, Grass. Jap. Neighb. Reg.150. 1987.

曲芒髮草

Deschampsia flexuosa
leaf cs section

Credit: cs kuoh

Aira flexuosa L., Sp. Pl. 1: 65. 1753. Aira kawakamii Hayata, Bot. Mag. Tokyo 20: 57. 1906; Icon. Pl. Form. 7: 90. 1918. Deschampsia kawakamii (Hayata) Honda, Monogr. Poac. Jap. 140. 1930.

Culms tufted, slender, less than 30 cm tall. Blade filiform; ligule tongue-shaped, 2 mm long. Panicle open, loose, purplish, 5-12 cm long. Spikelets 2-several-flowered, 5 mm long; glumes lanceolate, acute; the lower 5 mm long, 3-nerved, lateral nerves shorter; the uppe glumes 4 mm long, 1-nerved.Floret 4 mm long, basal part covered with short hairs which are 1/3 the length of the floret; lemma rounded at the apex, as long as the floret, with a bent awn arising from below the middle; palea slightly shorter than the lemma, minutely 2-tooted, 2-keeled on back. Anthers 2 mm long. Caryopsis glabrous, 2.5 mm long.

Widely distributed in Eurasia and N. America.

Common exposed gravelly soil in alpine zone, and rocky slopes in montain regions.

midrib 中肋: (no)not conspicuous

leaf surface 表面: (dee)upper surface with deep notch
between the veins

sclerenchyma 厚壁組織: (conti)strand extend and more or less continuous

chlorenchyma 葉綠組織: (homog)homogenous sponge tissue

bundle sheath 維管束鞘: (nke)bundle sheaths without chloroplast

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

chloroplast form in bundle sheath 束鞘細胞內之葉綠體型式: (not)no chloroplast

distance between two adjancent vein 脈間距: 170 micrometer


 

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  • leaf cs section (cs kuoh)
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  • leaf cs section-2 (cs kuoh)
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  • specimen (cs kuoh)
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  • Image/GIF (CC Hsu, 1975 Taiwan Grasses)
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    Flora of China  
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