Euclidium syriacum

(Linnaeus) W. T. Aiton in W. Aiton and W. T. Aiton

in W. Aiton and W. T. Aiton, Hortus Kew. 4: 74. 1812

Basionyms: Anastatica syriaca Linnaeus Sp. Pl. ed. 2, 2: 895. 1763
Synonyms: Bunias syriaca (Linnaeus) M. Bieberstein
Treatment appears in FNA Volume 7. Treatment on page 553.

Plants scabrous throughout, trichomes to 1 mm. Stems often ascending, (rigid), usually branched basally and near middle, (0.4–)1–4(–4.5) dm. Basal leaves similar to cauline. Cauline leaves petiolate [(0.2–)0.5–2(–2.5) cm] or (distal) sessile or subsessile; blade oblong, oblong-lanceolate, or elliptic, (1–)1.5–7(–9) cm × (3–)7–20(–30) mm (smaller distally), base cuneate, margins usually entire, dentate, or repand, rarely pinnatifid, apex acute or obtuse. Fruiting pedicels appressed to rachis, 0.5–1(–1.2) mm (ca. 1/2 as wide as fruit). Flowers: sepals 0.6–0.9 × 0.2–0.4 mm, sparsely pubescent; petals 0.9–1.3 × 0.1–0.2 mm, claw 0.4–0.6 mm; filaments 0.5–0.8 mm; anthers 0.1–0.2 mm. Fruits erect, 0.2–0.3 cm × 1.5–2 mm, 2-seeded; replum expanded, to 1.5 mm wide basally, narrowed to apex; style curved away from rachis, subconical, 1–1.8 mm, sparsely pubescent. Seeds 1.3–1.7 × 0.8–1.2 mm. 2n = 14.

Phenology: Flowering May–Jun.
Habitat: Waste places, roadsides, flats
Elevation: 0-2500 m


V7 886-distribution-map.gif

Calif., Colo., Idaho, Mass., Oreg., Utah, Wash., Wyo., Europe, Asia, introduced also in Australia.


Euclidium syriacum is known in the flora area from relatively few collections. The Massachusetts record, Knowlton s.n. (GH), was collected nearly a century ago; it is not known if the species has persisted in that state.

Selected References


Lower Taxa


... more about "Euclidium syriacum"
Ihsan A. Al-Shehbaz +
(Linnaeus) W. T. Aiton in W. Aiton and W. T. Aiton +
Anastatica syriaca +
Calif. +, Colo. +, Idaho +, Mass. +, Oreg. +, Utah +, Wash. +, Wyo. +, Europe +, Asia +  and introduced also in Australia. +
0-2500 m +
Waste places, roadsides, flats +
Flowering May–Jun. +
in W. Aiton and W. T. Aiton, Hortus Kew. +
Bunias syriaca +
Euclidium syriacum +
Euclidium +
species +