Euphorbia humifusa

田代氏大戟

endemic

Euphorbia humifusa Willd.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Willd. 1814. Enum. Pl. Hort. Berol., Suppl. 27.

台灣首次記錄發表文獻

Hayata. 1917. General Index to the Flora of Formosa 66. (Gen. Ind. Fl. Formos.)

異名

Euphorbia tashiroi Hayata

Hayata. 1920. Icones Plantarum Formosanarum 9: 104. (Icon. Pl. Formos.)
Euphorbia hypericifolia L.

Hayata. 1904. The Journal of the College of Science, Imperial University of Tokyo, Japan 20: 75. (J. Coll. Sci. Univ. Tokyo)
Chamaesyce hypericifolia (L.) Millsp. var. tashiroi (Hayata) Hurusawa

Hurusawa. 1954. Journal of the Faculty of Science, Imperial University of Tokyo. Section III, Botany 6(6): 285. (J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot.)
Chamaesyce tashiroi (Hayata) Hara

Hara. 1938. Journal of Japanese Botany 14: 356. (J. Jpn. Bot.)

各語言俗名

中

田代氏大戟
日

けこばのにしきさう、のこばにしきそう、にしきそう

參考文獻

Yang. 1982. A list of plants in Taiwan. (List Pl. Taiwan)
Yang, Y., Riina, R., Morawetz, J.J., Haevermans, T., Aubriot, X. & Berry, P.E. 2012. Taxon 61: 764-789.

特徵描述

生活型

herb

形態特徵

Herb; stem ascending, rarely prostrate, reddish, sparsely to densely sericeous; stipules free or fused at base, triangular, 0.4-0.6 mm long, puberulent at margin.
Leaves green or reddish, sometimes with several small purple spots, obovate- to ovate- oblong or elliptic, 5–15 mm long, 3–8 mm wide, acute to rounded at apex, obliquely truncate, rounded to subcordate at base, serrulate at margin, subglabrous above and sericeous below; petioles 0.8–1.3 mm long, sericeous abaxially.
Cyathia in loosely or densely peduculate cymes together with a solitary cyathium at nodes; involucres turbinate to campanulate, 0.5-0.9 mm long, pilose inside; stalks 0.5–1.4 mm long; glands 4, red, rounded to transversely elliptic, 0.1-0.5 mm long; appendages white, reniform, entire to undulate, 0.3-0.6 mm long, 0.1-0.5 mm wide; bracteoles linear to linear-oblanceolate, laciniate-larcerate at margin. Male flowers 5–15, anthers red. Female flowers with sericeous pedicel and ovary; style and stigma 0.3-0.5 mm long.
Capsules exserted, nutant, sericeous, the pedicels to 3 mm long; seeds brownish or grayish, tetragonal, oblong-ovoid, 0.8–1 mm long, 0.6-0.8 mm wide, smooth or slightly rugulose.

分布

台灣 : Endemic to Taiwan. It can be found in cultivated fields and on coral reefs, but is not common.

引證標本

TAIPEI: Tanshui, Tashiro s. n. 1895. CHANGHUA: Tienwei, Chaw & Lin 1204. YUNLIN: Thalibukoe, Tashiro s. n. 1895 (Type of Euphorbia tashiroi, TI!). TAINAN: Matou, Morilani 104. KAOHSIUNG: Hsiaokang,Shimada 6025C. PINGTUNG: Pingtung, Shimada s. n. 1915; Chuanfanshih, Lu & Ou 1560.TAITUNG: Lanyu, Hungtou, Huang & Kao 5181. HUALIEN: Hotien, Yashikawa s. n. 1923.