Portulaca psammotropha

沙生馬齒莧

Portulaca psammotropha Hance

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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名彙資訊

學名發表文獻

Hance, Annales Botanices Systematicae 2: 660. 1851. (Ann. Bot. Syst.)

台灣首次記錄發表文獻

Chung, Madulid & Hsu, Taiwania 53(1): 91. fig. 1-3. 2008.

異名

Portulaca quadrifida L. var. formosana Hayata

Hayata, Materials for a flora of Formosa 37. 1911. (Mat. Fl. Formos.)
Portulaca formosana (Hayata) Hayata

Hayata, General Index to the Flora of Formosa 7. 1917. (Gen. Ind. Fl. Formos., 台灣植物總名錄)
Portulaca insularis Hosok.

Hosok., Transactions of the Natural History Society of Formosa 22: 229. 1932. (Trans. Nat. Hist. Soc. Formos., 台灣博物學會會報)
Portulaca pachyrrhiza Gagnep.

Hatusima, Memoirs of the Faculty of Agriculture, Kagoshima University 7(2): 306. 1970. (Mem. Fac. Agric., Kagoshima Univ.)
Portulaca quadrifida auct. non L.

Hatusima, Flora of Ryukyus 266. 1971. (Fl. Ryukyus)
Portulaca pilosa auct. non L.

Liu, Flora of Taiwan, second edition 2: 335. 1996. (ssp. pilosa) pro parte.. (Fl. Taiwan 2nd edit., 台灣植物誌第二版)

各語言俗名

中

島嶼馬齒莧. 寶島馬齒莧. 台灣馬齒莧.
日

たいわんすべりひゆ.

參考資料

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)

特徵描述

生活型

herb

形態特徵

Herbs perennial, 3-10 cm high, much-branched, with herbaceous stems from a short woody basal stem. Roots fleshy. Stems not articulated, diffuse, branched basally, 1-2 mm thick; leaf axils more or less villous.
Leaves alternate, subsessile; leaf blade to 2.5 mm thick, fleshy, oblong to obovate-oblong, 3-10 mm long, base obtuse, apex obtuse or rounded.
Flowers solitary, about 1-1.6 cm in diameter, surrounded by involucre of 4-6 bracts. Sepals ovate-deltate, ca. 2.5 mm, veined. Petals 5, yellow or yellowish, elliptic, 2.5-3.0 mm long. Stamens 10-30. Ovary ovoid. Stigma 2-5-lobed.
Capsule glossy straw colored apically, broadly ovate, compressed, 2.5-4.5 mm long, 2.5-3.5 mm wide. Seeds black, turning iridescent gray when fully mature, orbicular-reniform, ca. 0.7 mm; testa cells interlocking, slightly raised.

物候

Flowering and fruiting observed throughout the year in Tungshatao, and mainly in summer to autumn in Taiwan.

分布

台灣 : On coral sands or coral reefs, occasionally in crevices of artificial cement structure at coastal region.
世界 : North Philippine (Batan Is.), South China (Hainan), Tungshatao, South Taiwan (Kenting, Liuciou, Lutao, Lanyu and the Penghu Islets), and the Ryukyus (Ikei Islet).

引證標本

KAOHSIUNG: Tungshatao, C. L. Lin 40 (TAIF), T. C. Hsu 707 (TAIF), T. C. Huang et al. 16533 (TAI), T. Kawakamii 4621, 4658 (TAIF). PINGTUNG: Kengting, C. C. Hsu & R. Hsu 4210 (TAI), T. Hosokawa 1628 (holotype of Portulaca insularis Hosokawa, TAI), T. Hosokawa 1629 (TAI), P. F. Lu 13858 (HAST). TAITUNG: Lutao, T. I. Chuang & C. C. Hsu 2283 (TAI); Lanyu, P. F. Lu 12700 (HAST). PENGHU: Penghu Islet, T. C. Huang & M. T. Kao 6807 (TAI), Shiyui, C. C. Hsu & C. S. Kuoh 14043 (TAI); Shiyu Islet, K. S. Hsu s. n. (TAIF).