Thymelaea passerina

(Linnaeus) Cosson & Germain

Syn. Anal. Fl. Paris ed. 2, 360. 1859.

Common names: Passarine annuelle spurge flax
Basionym: Stellera passerina Linnaeus Sp. Pl. 1: 559. 1753
Treatment appears in FNA Volume 6. Treatment on page 383.

Stems green or yellow-green, turning red in fall. Leaves upright; petiole to 1 mm; blade 0.6–1.5 × 0.1–0.2 cm, stiff, herbaceous to coriaceous, apex acute. Inflorescences cymose, 1–7-flowered; bracts 1.5 cm, with tuft of white trichomes at base. Flowers: hypanthium green to yellow, tubular, becoming urceolate, 2–3 mm, appressed-hairy; calyx lobes minute; stamens: distal whorl inserted at throat; distal anthers subexserted; ovary 0.75 mm, apex hairy; style 0.7–0.8 mm, glabrous, becoming ± eccentric in fruit; stigma exserted. Capsules pyriform. 2n = 18.

Phenology: Flowering summer (late Jun–Aug); fruiting summer–fall (Jul–early Sep).
Habitat: Dry, disturbed ground, including prairies and old fields
Elevation: 10–300 m


V6 709-distribution-map.jpg

Ont., Que., Ala., Ill., Iowa, Kans., Mich., Miss., Nebr., Ohio, Tex., Wash., Wis., s Europe, Mediterranean regions.


Thymelaea passerina is sometimes accidentally introduced in fodder and spreads quickly. It is sometimes mistaken for one of the delicate species of Polygala.

Selected References


Lower Taxa

... more about "Thymelaea passerina"
Lorin I. Nevling Jr. +  and Kerry Barringer +
(Linnaeus) Cosson & Germain +
Stellera passerina +
Passarine annuelle +  and spurge flax +
Ont. +, Que. +, Ala. +, Ill. +, Iowa +, Kans. +, Mich. +, Miss. +, Nebr. +, Ohio +, Tex. +, Wash. +, Wis. +, s Europe +  and Mediterranean regions. +
10–300 m +
Dry, disturbed ground, including prairies and old fields +
Flowering summer (late Jun–Aug) +  and fruiting summer–fall (Jul–early Sep). +
Syn. Anal. Fl. Paris ed. +
Illustrated +  and Introduced +
Thymelaea passerina +
Thymelaea +
species +