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FOC | Family List | FOC Vol. 8 | Brassicaceae | Arabis

9. Arabis flagellosa Miquel, Ann. Mus. Bot. Lugduno-Batavi. 2: 72. 1865.

匍匐南芥 pu fu nan jie

Arabis flagellosa var. lasiocarpa Matsumura.

Herbs stoloniferous perennial, (4-)10-30(-45) cm tall, sparsely to densely tomentose or pilose, with short-stalked, 3- or 4-rayed stellate trichomes, sometimes with few forked ones along leaf margin. Vegetative stems decumbent or procumbent, flowering ones erect and much shorter. Basal leaves rosulate; petiole (0.7-)1.5-4(-7) cm, winged; leaf blade spatulate, obovate, or oblanceolate, (0.7-)2-5(-7) × (0.5-)1-3 cm, base attenuate to petiole, margin dentate, apex obtuse or rounded. Cauline leaves shortly petiolate or subsessile; leaf blade obovate or oblong, (0.6-)1-3(-4) × (0.3-)0.6-1.6(-2) cm, margin dentate or subentire, apex obtuse. Racemes ebracteate, rarely lowermost 1 or 2 flowers bracteate. Fruiting pedicels ascending or divaricate, (0.8-)1-1.5 cm, slender, often straight. Sepals oblong, 4-5 × 1.5-2 mm, lateral pair saccate. Petals white, spatulate, 7-10 × 2.5-4 mm, apex rounded. Filaments 5-7 mm; anthers oblong, 1-1.5 mm. Ovules 30-50 per ovary. Fruit (1.5-)2-4(-4.8) cm × 1.2-1.5 mm; valves slightly torulose, glabrous or pilose, with an obscure midvein; style 1-3 mm. Seeds oblong-ovate, 1-1.5 × 0.8-1.1 mm, narrowly winged, uniseriate. Fl. and fr. Mar-May.

Along ditches, rocky crevices, foothills, forest margins, hillsides; near sea level to 1300 m. Anhui, Jiangsu, Jiangxi, Zhejiang [Japan].

The above first record from Jiangxi is based on Ye 3852 (MO) and Shan & Lai 2389 (MO).


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