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furrowed melilot, grooved melilot, Mediterranean sweetclover

sweetclover, volga sweet-clover

Habit Herbs annual, 10–70 cm. Herbs biennial, 40–120(–150) cm.
Stems

erect or ascending.

erect.

Leaves

stipules ovate-acuminate or subulate, 5–10 mm, margins dentate (mostly at base);

leaflet blades obovate, oblanceolate, or oblong-cuneate, 10–25 × 5–12 mm, margins dentate.

stipules linear-setaceous or subulate, 6–8(–10) mm, margins entire;

leaflet blades rhombic-ovate to oblong-lanceolate, or linear, 10–30 × 2–8 mm, margins dentate or entire.

Racemes

(5–)8–20(–50)-flowered.

25–60-flowered.

Pedicels

1–2 mm.

2–4 mm.

Flowers

(2.5–)3–4(–8) mm;

corolla yellow;

ovary glabrous.

3–3.5 mm;

corolla white;

ovary glabrous.

Legumes

globose or ovoid, (2–)3–4(–5.5) mm, concentrically striate-veined, glabrous.

obovoid, 4–5 mm, distinctly reticulate-veined, glabrous.

Seeds

1(or 2), oblong-subglobose or ovoid, (2–)2.5–3(–3.5) mm.

usually 1 (or 2), oblong-ovoid, 2.5 mm.

2n

= 16 [Eurasia].

= 16 [Eurasia].

Melilotus sulcatus

Melilotus wolgicus

Phenology Flowering spring–summer. Flowering spring–summer.
Habitat Ruderal areas. Gravel pits, wasteland, drainage ditches, sandy banks.
Elevation 0–200 m. (0–700 ft.) 200–500 m. (700–1600 ft.)
Distribution
from FNA
AL; NJ; PA; Europe; Asia; Africa [Introduced in North America]
[BONAP county map]
from FNA
MB; SK; Eurasia [Introduced in North America]
[BONAP county map]
Discussion

In Europe, Melilotus sulcatus appears to intergrade or at least hybridize with M. infestus Gussone [M. sulcatus subsp. infestus (Gussone) Bonnier & Layens] and M. segetalis (Brotero) Seringe [M. sulcatus subsp. segetalis (Brotero) P. Fournier].

(Discussion copyrighted by Flora of North America; reprinted with permission.)

The Manitoba vouchers of Melilotus wolgicus are mostly G. A. Stevenson collections at DAO from the Brandon area and are almost certainly established escapes from the extensive experimental cultivation of Melilotus species by Stevenson; it has also been observed persisting in the forage plot area of the Research Station, Saskatoon, Saskatchewan, but does not appear to have spread elsewhere.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Melilotus Fabaceae > subfam. Faboideae > Melilotus
Sibling taxa
M. albus, M. altissimus, M. indicus, M. officinalis, M. wolgicus
M. albus, M. altissimus, M. indicus, M. officinalis, M. sulcatus
Synonyms Trigonella sulcata
Name authority Desfontaines: Fl. Atlant. 2: 193. (1799) — (as sulcata) Poiret in J. Lamarck et al.: Encycl., suppl. 3: 648. (1814) — (as wolgica)
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