Tropicos | Name - Eutrema salsugineum (Pall.) Al-Shehbaz & S.I. Warwick

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Eutrema salsugineum (Pall.) Al-Shehbaz & S.I. Warwick

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19. Eutrema salsugineum (Pallas) Al-Shehbaz & S. I. Warwick, Harvard Pap. Bot. 10: 134. 2005; Sisymbrium salsugineum Pallas, Reise Russ. Reich 2: 466. 1773; Arabidopsis salsuginea (Pallas) N. Busch, Fl. Siberia Orient. 1: 136. 1913; Hesperis salsuginea (Pallas) Kuntze, Revis. Gen. Pl. 2: 935. 1891; Stenophragma salsugineum (Pallas) Prantl in Engler & Prantl, Pflanzenfam. III92): 192. 1890; Thellungiella salusgineum (Pallas) O. E. Schulz in Engler, Pflanzenreich IV. 105 (Heft 86): 252. 1924; Thelypodium salsugineum (Pallas) B. L. Robinson in A. Gray & S. Watson, Syn. Fl. N. Amer. 1(1): 175. 1895. SYNTYPE (according to German, 2002): “in descetis salsas Bargusinensiz, Jul 1772 (Herb. Trin. No. 423) MW,” not seen).

Sisymbrium glaucum Nuttall in Torrey & A. Gray, Fl. N. Amer. 1: 93. 1938; Hesperis glauca (Nuttall) Kuntze, Revis. Gen. Pl. 2: 934. 1891; Pilosella glauca (Nuttall) Rydberg, Torreya 7: 171. 1907. TYPE: United States, “prairies of the Oregon, towards the Rocky Mountains,” T. Nuttall s.n. (holotype, BM).

Herbs, glabrous throughout, often glaucous. Stems (6–)10–30(–40) cm, erect or ascending, simple or several branched at base. Basal leaves rosulate or not; petiole 5–10 mm; leaf blade obovate, spatulate, or oblong, 0.5–1.5(–2.5) cm x 2–5 mm, margin entire or rarely dentate or pinnatifid, apex obtuse; middle cauline leaves cordate, ovate, or oblong, sessile, 0.4–1.7(–2.5) cm x 1–7(–10) mm, base deeply sagittate-amplexicaul, margin entire or repand, apex acute or obtuse. Raceme elongated in fruit; rachis straight; fruiting pedicels slender, divaricate to divaricate-ascending, 3–10 mm. Sepals oblong, 1–1.5 x 0.5–0.6 mm; petals white, obovate, 2–3 x 1–1.7 mm; filaments 1–1.5 mm; anthers oblong, 0.2–0.4 mm, apiculate; ovules 55–96 per ovary. Fruit 0.7–1.6(–2) cm x (0.7–)0.8–1 mm, distinctly torulose, sessile; valves obscurely veined; style 0.1–0.3 mm. Seeds brown, oblong, biseriate, 0.4–0.5 x 0.2–0.3 mm. 2n=14.

Flowering: May–Jun.

Habitat: sandy alkaline ground, saline flats and fields, alkaline sloughs, river banks, salt meadows and plains, steppes.

Elevation: 600–2500 m.

Distribution: Canada (British Columbia, Northwest Territories, Saskatchewan, Yukon), China (Hebei, Henan, Jiangsu, Jilin, Nei Mongol, Shandong, Xinjiang), Kazakhstan, Kyrgyzstan, Mongolia, Russia (European part, Siberia), Turkmenistan, United States (Colorado, Montana), Uzbekistan.