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Dinghushan | Family List | Umbelliferae | Oenanthe

Oenanthe javanica (Bl.) DC.

水芹

Description from Flora of China

Plants 10–80 cm. Roots fibrous. Stems decumbent. Basal petioles 5–10 cm; blade oblong-ovate, 1–2-pinnate; ultimate segments ovate or rhombic-ovate, 5–50 × 5–20 mm, margins serrate. Cauline leaves gradually reduced upwards, smaller, becoming sessile on expanded sheaths. Umbels 3–5 cm across; peduncles 2–16 cm; bracts absent, or occasionally 1, linear, 3–11 mm; rays 6–16(–30), 1–3 cm, subequal or unequal; bracteoles 2–8, linear, 2–4 cm, as long as pedicels; umbellules ca. 20-flowered; pedicels 1.5–4 mm. Calyx teeth ca. 0.5 mm. Styles patent, 1.2–2 mm. Fruit subglobose or ovoid, ca. 2.5 × 2 mm; dorsal and intermediate ribs slightly corky-thickened.

The complex nomenclatural history reflects the taxonomic problems with these morphologically very variable, widespread plants. Leaf morphology is particularly variable, and the size and shape of the leaves of the subsp. javanica converge with subsp. rosthornii in Malaysia and adjoining areas. Outside China, some authors have a broader species concept for Oenanthe javanica, including O. benghalensis and O. linearis within it. Further work over a wide geographic area is needed to resolve the classification.

Grassland at forest margins, marshlands, water meadows, lakeshores, river banks, muddy stream banks, shallow water; 600–4000 m. Throughout China [India, Indonesia, Japan, Korea, Laos, Malaysia, Myanmar, Nepal, New Guinea, Pakistan, Philippines, Russia, Thailand, Vietnam].

生活型: 草本

栽培植物: 野生

特征: 多年生湿草本;

花期: 6

生境: 见于九坑山谷密林中湿地、

用途: 可充菜食;全草入药,清热解毒,利尿、止血、降压治头目眩晕、肾炎浮肿、肿毒及眼病

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 双子叶植物纲


 

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