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Myagrum perfoliatum L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Species Plantarum 2: 640–641. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 7/23/2009)
 

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Myagrum perfoliatum Linnaeus, Sp. Pl. 2: 640. 1753. TYPE: “Habitat inter Galliae segetes,” (lectotype designated by Hedge (in Jarvis et al., Regnum Veg. 127: 68. 1993): Herb. Linn. No. 819.10 (LINN).

Herbs, annual. Stems 2–5(–6) dm, erect, simple below, rigidly branched at or above middle. Basal leaves short-petiolate, oblanceolate, 2–7 cm x 0.5–1.5 cm, pinnatifid, runcinate, sinuate, or dentate, withered by anthesis; cauline leaves below branches sessile, oblong to lanceolate, (1–)1.5–6(–8) x (0.3–)0.5–2(–2.5) cm, base sagittate to amplexicaul or auriculate, margin entire or denticulate, apex acute or obtuse; leaves of branches similar but progressively smaller upwards, entire. Racemes with numerous flowers; fruiting pedicels 3–5 mm, stout, appressed to rachis, much wider distally. Sepals oblong to ovate, 2.5–3.5 x 0.6–1.4 mm; petals yellow, oblong to oblanceolate, 3–5 x 0.7–1.4 mm, attenuate to base, obtuse at apex; filaments 2.5–3.7 mm; anthers oblong, 0.5–0.7 mm. Fruit obpyriform to clavate-obcordate, 4.5–7.5(–8.5) x 2.5–4.5(–5) mm, appressed to rachis; style (0.8–)1.2–2 mm. Seeds brown, oblong to ovoid, 2–3 x 1–2 mm. 2n = 14.

Flowering: Apr–Jun.

Habitat: roadsides, waste grounds, disturbed sites.

Distribution: s Europe (Albania, Bosnia and Herzegovenia, Bulgaria, Czech Republic, France, Germany, Greece, Hungary, Italy, Romania, Russia, Serbia, Slovak Republic, Slovenia, Spain, Ukraine);SW and C Asia (Armenia, Azerbaijan, Georgia, Iran, Iraq, Israel, Jordan, Lebanon, Syria, Turkey); introduced into South Africa, E Asia (Japan, Korea), Australia, and the United States (Texas, Virginia).

 

 
 
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