2. Camelina microcarpa de Candolle, Syst. Nat. 2: 517. 1821.
小果亚麻荠 xiao guo ya ma ji
Camelina longistyla Bordzil; C. microphylla Z. X. An; C. sativa (Linnaeus) Crantz subsp. microcarpa (de Candolle) Hegi & E. Schmid; C. sylvestris Wallroth.
Herbs annual, (8-)20-60(-80) cm tall, densely to moderately hirsute with simple trichomes to 2.5 mm, these mixed with branched fewer ones. Stems simple or branched above, densely hirsute basally, glabrescent above. Cauline leaves lanceolate, narrowly oblong, or linear-lanceolate, middle ones (0.8-)1.5-5.5(-7) cm × 1-10(-20) mm, pubescent primarily with simple trichomes, often subciliate, base sagittate or minutely auriculate, margin entire or rarely remotely denticulate, apex acute. Fruiting pedicels 4-14(-17) mm. Sepals 2-2.5 × 0.5-1 mm. Petals pale yellow, 3-4 × 0.5-1 mm. Filaments 1.5-3 mm; anthers ca. 0.5 mm. Fruit obpyriform to narrowly so, (2.5-)3.5-5(-6) × 2-4(-5) mm, acute at apex; valves with a distinct midvein and less prominent lateral veins; style 1-3.5 mm. Seeds reddish brown or brown, oblong, 0.8-1.4(-1.5) × 0.5-0.6 mm. Fl. Apr-Jun, fr. May-Aug. 2n = 40.
Farms, fields, roadsides, forest margins, mountain slopes; 700-1600 m. Gansu, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Shandong, Xinjiang [Kazakhstan, Mongolia, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia, Europe; introduced in North America].
Camelina microphylla is based on grazed and deformed plants of C. microcarpa. Plants with similarly deformed morphology have been observed in collections from Europe and North America.