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Taiwan Gramineae | Family List | Poaceae | Thuarea

Thuarea involuta (G. Forst.) R. Br. ex Sm., Cycl. 35, 2: unpaged. 1817; Hsu, Fl. Taiwan 5: 612, pl.1452. 1978.


Thuarea involuta

Credit: CC Hsu

Ischaemum involutum G. Forst., Fl. Ins. Austr. 73. 1786.

Clum long creeping, stoloniferous, forming mats, flowering clum 5-20 cm tall. Blade lanceolate, 2- 5 cm long, 3-6 mm wide; sheath ciliate on margin, 1/2 as long as internode; ligule a row of hairs, 0.5- 1mm long. Inflorescence a terminal one-sided raceme, enclosed by a spathe. Spikelets puberulent.similar, upper slightly firmer. Fertile spikelet with glumes and lower lemma similar to staminate spikelet. Upper floret perfect or pistillate, smooth and shiny. Madagascar, India, Sri Lanka, Myanmar, Indochina, Malesia, Australia, southern China and the Ryukyus. Taiwan, in sandy seashores.

TAIPEI: Fulong, Kuoh 1608. Paishawan, Peng 2108. PINGTUNG: Kenting, Hsu & Hsu 4199; Oulanpi, Hsu 512. TAITUNG: Lanyu Is., Hsu 9330; Shangwu, Hsu 13551.

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

bundle sheath 維管束鞘: (dko)two bundle sheaths the outer one
with conspicuous chloroplast

buliform cells well developed 泡狀細胞發達: (bboth)appear both in adaxial and abaxial side

chlorenchyma cell number between two adjacent veins: 2

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

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

distance between two adjancent vein 脈間距: 145 micrometer

length/weidth ratio of bundle sheath in LS 束鞘細胞縱面長寬比: 1

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


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