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2b. Pegaeophyton scapiflorum subsp. robustum (O. E. Schulz) Al-Shehbaz et al. in Al-Shehbaz, Edinburgh J. Bot. 57: 164. 2000.
粗壮单花荠 cu zhuang dan hua ji
Pegaeophyton sinense (Hemsley) Hayek & Handel-Mazzetti var. robustum O. E. Schulz, Notizbl. Bot. Gart. Berlin-Dahlem 9: 477. 1926; Braya sinensis Hemsley; P. scapiflorum var. robustum (O. E. Schulz) R. L. Guo & T. Y. Cheo; P. sinense (Hemsley) Hayek & Handel-Mazzetti.
Caudex mostly stout, (5-)8-20(-30) mm in diam., simple or rarely branched at apex. Petals (6-)8-12(-15) × (5-)6-9(-10) mm, length (1-)1.2-1.5 × width. Seeds (2-)2.5-3.5(-4) × (1.5-)2-2.5(-3) mm. Fl. Apr-Oct, fr. Jul-Nov.
Among rocks, gravel in stream beds, dry slopes, alpine brooks, wet gravel, swampy ground, glacier stream beds, peaty soil, wet screes; 3500-4800 m. Sichuan, Xizang, Yunnan [Bhutan].
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