Synstemon petrovii Botsch.

Herbs annual, 15-30 cm tall. Stems often branched basally and above, sparsely pilose or glabrescent. Basal leaves shortly petiolate, not rosulate, often withered by flowering, pinnatipartite, 1-2 cm × 3-5 mm, apex acute. Cauline leaves linear, sessile, 0.5-4 cm × 0.5-1.7 mm, somewhat fleshy, margin entire, apex acute, sparsely pilose. Fruiting pedicels divaricate or ascending, slender, glabrous, 4-10 mm. Sepals oblong, 2-2.5 × 0.9-1.2 mm, glabrous or densely pilose. Petals lilac, obovate, 4-5.5 × 1.7-2.8 mm, apex rounded; claw 1-2.5 mm, sparsely to densely pilose. Filaments of median stamens 2-3.5 mm, united at base, sparsely to densely pilose on basal half; lateral stamens 1-2 mm, pilose basally; anthers oblong, 0.6-0.8 mm. Ovules 20-24 per ovary. Fruit linear, compressed, (0.5-)1.3-3 cm × 0.8-1.5 mm, straight; valves sparsely pubescent basally when young, soon glabrescent, with a distinct midvein; gynophore ca. 0.5 mm; style 0.5-1 mm. Seeds oblong, 1.2-1.7 × 0.7-0.9 mm. Fl. and fr. Jun.

Gansu, Nei Mongol.

* Slopes, deserts, rocky and sandy flats; 1500-2400 m.

Synstemon deserticola Y. Z. Zhao; S. petrovii var. pilosus Botschantzev; S. petrovii var. xinglongicus Z. X. An; Synstemonanthus petrovii (Botschantzev) Botschantzev; S. petrovii var. pilosus (Botschantzev) Botschantzev.

Synstemon petrovii là một loài thực vật có hoa trong họ Cải. Loài này được Botsch. miêu tả khoa học đầu tiên năm 1959.

连蕊芥（学名：Synstemon petrovii），为十字花科下的一个植物变种。