喀布尔无苞芥 ka bu er wu bao jie

Sisymbrium cabulicum J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 5: 161. 1861; Arabidopsis korshinskyi Botschantzev; A. pumila (Stephan) N. Busch var. alpina (Korshinsky) O. E. Schulz; Sisymbrium pumilum Stephan var. alpinum Korshinsky.

Herbs annual, 1-12(-30) cm tall. Stems subdecumbent to erect, few branched or rarely simple at base, pubescent with short-stalked to subsessile, stellate trichomes. Basal leaves not rosulate, subsessile, often withered by fruiting, pubescent as stems; leaf blade oblanceolate, obovate, or lanceolate, 0.2-2(-3.2) cm × 1-9(-15) mm, margin entire, repand, or obscurely dentate, apex acute. Middle cauline leaves oblong or ovate, sessile, 0.2-2(-3.5) cm × 1-8(-15) mm, base auriculate, margin entire or repand, apex acute. Fruiting pedicels slender, stellate pubescent, divaricate, 1-4(-6) mm. Sepals oblong, 1.1-1.5 × 0.3-0.5 mm, pubescent. Petals yellow, turning whitish when dry, spatulate or oblanceolate, 1.6-1.9 × 0.4-0.5 mm, attenuate to base; claw absent. Filaments 1.2-1.6 mm; anthers oblong, 0.1-0.2 mm. Fruit linear, terete, curved or straight, 4-10(-13) × 0.7-0.9 mm, only slightly torulose; valves pubescent with subsessile, 3-rayed trichomes, usually with a distinct midvein; septum perforated or reduced to a rim; style 0.1-0.5 mm. Seeds brown, 5-18(-20) per fruit, oblong, uniseriate, 0.5-0.8 × 0.3-0.4 mm. Fl. Mar-May, fr. Apr-Jun. 2n = 48.

Valleys, rocky slopes, river banks; 3000-4200 m. Xinjiang [Afghanistan, Kyrgyzstan, Tajikistan].

This species was recorded in FRPS (as Arabidopsis pumila var. alpina) from Xinjiang. The present authors have seen no material from China, and the above description was based on misidentified plants from Pamir Alai, Tajikistan.