Ontario Weeds: Black medick
Excerpt from Publication 505, Ontario Weeds, Order this publication
Table of Contents
- Other Names
- General Description
- Stems and Roots
- Flowers and Fruit
- Related Links
Name: Black medick, Medicago lupulina
Other Names: Lupuline, Yellow-clover, luzerne lupuline, minette
Family: Legume or Bean Family (Leguminosae)
General Description: Annual, reproducing only by seed. It is distinguished by its compound leaves having 3 oval leaflets, all with shallow teeth towards their tips but only the central one with a definite stalk; the small, nearly spherical clusters of yellow flowers on stalks usually longer than the leaves; and the small clusters of black coiled seedpods produced from those flower heads.
Black medick. A. Plant.
Flowers & Fruit: Flowers individually very small but grouped in dense head-like clusters, about 1 cm (2/5 in.) in diameter, on long stalks from leaf axils; each flower very small, yellow, similar in form to pea or bean flowers; seedpods black (hence the common name), slightly coiled, prominently ridged and hairy or smooth. Flowers from early spring to late autumn, dropping its seed during most of that time.
Habitat: Black medick occurs throughout Ontario in most soil textures. A particularly common weed in lawns, it also grows in gardens, waste places, roadsides, pastures and sometimes in cultivated fields.
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