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Taiwan Gramineae | Family List | Poaceae | Axonopus

Axonopus compressus (Sw.) P. Beauv., Ess. Agrostogr. 12. 1812. Hsu, Fl. Taiwan 5: 527. pl. 1421.


Axonopus compressus
Taiwan Grasses

Credit: CC Hsu 1975

Milium compressum Sw., Prodr. 24. 1788.

Perennials; stolons long creeping. Leaf blade thin, 5-20 cm long, 8-10 cm wide, broad and with a rounded apex; ligule short, ca. 0.5 mm long; sheath loose, basal ones imbricate. Racemes 2-5, digitately arranged, 5-10 cm long; rachis triangular, spikelets in 2-rows along one-side. Spilelets sparingly soft hairy, 2-3 mm long, compressed, oblong, obtuse; lower glume wanting; upper glume and lower lemma same shape, lower palea absent; upper floret hard, oblong-elliptic, obtuse, margins slightly inrolled, ca. 2 mm long, mucronate and pubescent at apex.

TAIPEI: NTU Campus, Hsu 11254. TAINAN, Tainan, Hsu 13645. PINGTUNG: Pingtung, Hsu 13635; Santimen, Hsu 40136.

Native to tropical America. Introduced and naturalized in many warm countries. Taiwan, moist and shady areas.

midrib 中肋: (la)large:several vascular bundles

leaf surface 表面: (fla)flat surface

sclerenchyma 厚壁組織: (noscl)no except large vein

chlorenchyma 葉綠組織: (inrad)somewhat radiate and equal or
slightly large
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: (smreg)epidermal cells gradually enlarge
from vein to intervein

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

mestome sheath 內束鞘細胞: (Xyms -)metaxylem pole adjacent with
outer bundle sheath

distance between two adjancent vein 脈間距: 82 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 2


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