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Taiwan Gramineae | Family List | Poaceae | Brachypodium

Brachypodium sylvaticum (Huds.) Beauv., Ess. Agrost. 101. 155. 1812. Hsu, Fl. Taiwan 5: 428. 1978; Koyama, Grass. Jap. Neighb. Reg. 59. 1987.


Brachypodium sylvaticum
leaf cs section

Credit: cs kuoh

Brachypodium kelungense Honda, Journ. Jap. Bot. 12: 153. 1936.
Brachypodium sylvaticum var. kelungense (Honda) C. Hsu, Taiwania 16: 236. 1971.
Brachypodium sylvaticum var. luzoniense (Hack.) Hara, Bot. Mag. Tokyo 52: 227. 1938; C. Hsu, Taiwania 16: 236. 1971.

Culms up to 50 cm tall, 1 mm in diameter, glabrous or pubescent, node disticnt. Blade linear, 10-12 cm long, 4-6 mm wide; ligule membranous, 2 mm long, fimbriate. Raceme up to 10 cm long, with more than 3 spikelets. Spikelets 5-12-flowered, 2 cm long; glumes chartaceous, distinctly nerved; the lower lanceolate, 2.5 mm long, 3-5-nerved, apex ending in a short awn; the upper broadly lanceolate, 4 mm long, 7-nerved, short awned; lemmaaubcoriaceous, 7-8 mm long, glabrous to pubescent, 7-nerved, tipped with an awn, awn nearly as long as the lemma; palea chartaceous, linear-oblong, as long as the lemma, 2-keeled, ciliate on keels.

TAIPEI: Mt. Chihsingshan, Hsu 465. HSINGHU: Tapachienshan, Kuoh 3274. TAICHUNG: Hsinshan, Hsu 444. NANTOU: Yunhai, Kao 5815; Chitou, Hsu 86. CHIAYI: Mt. Morrison, Kuoh 1298; Hsu 6315; Mt. Alishan, Hsu 3922. TAITUNG: Kueihu, Hsu 3336.

Widely distributed in the temperate regions of Eurasia and northern Africa.

The degree of pubescence on both vegetative parts and lemma are variable in this species.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

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

chlorenchyma 葉綠組織: (palis)differentiate to palisade and
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: (smreg)epidermal cells gradually enlarge
from vein to intervein

chlorenchyma cell number between two adjacent veins: 8

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

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

distance between two adjancent vein 脈間距: 260 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 11

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


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