資料編號: | HK-3127 |
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中文名稱: | 疏鬆珍珠茅 |
學名: | Scleria laxa [找同屬植物] |
植物科名: (APG新系統) | CYPERACEAE莎草科 [找同科植物] |
標室舊系統 | CYPERACEAE莎草科[找同科] |
生長習性: | 草本 |
原生/外來: | 香港原生植物 |
資料更新: | 20230927 11:38:27 pm |
備註: FOHK: Annual; rhizome absent. Stem very slender, smooth, 1–2-noded below the inflorescence, 20–45 cm tall, 1–1.5 mm thick. Leaves narrowly linear, 5–15 cm × 1–3 mm, apex rather abruptly narrowed to the ± obtuse tip, glabrous, smooth or scabrid on the margins and the main veins near the apex, 3–5-veined; sheaths narrow, wingless, upper ones glabrous, lower ones often leafless, pubescent, purplish; contraligule short, broadly rounded, ciliate. Inflorescence occupying by far the greater part of the stem, narrow, very loose, consisting of about 3 very remote fascicles of partial panicles, the terminal panicle not larger than the lateral ones, 1–2 cm; peduncles 3–4 together at the nodes, exserted from the sheaths, ± noding, filiform, slightly incrassate at the apex, 2–4 cm; primary bracts erect, as long as or overtopping the inflorescence. Spikelets unisexual; male spikelets about as long as their peduncles, linear-lanceolate, 1.5–2.5 mm; stamen 1; anther oblong-linear, 0.7–1 mm; female spikelets 3.5–4 mm, without a trace of a male part; glumes ovate, acute or mucronate. Cupula very small, 0.7 mm wide, hardly lobed. Achenes globose, ca. 1.7 mm across, deeply longitudinally ribbed, with 3 of the ribs more prominent, ± trabeculate between the ribs, slightly tuberculate at the top, umbonulate, glabrous, shining, white, the ribs not all reaching the base of the achene, but leaving a smooth triangular area above each disk-lobe; disk small, shortly 3-lobed; lobes obtuse, semi-orbicular. Locality: Shek O, Kwun Tong, Tung Chung. | |
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