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yellow bird's-foot, yellow serradela

bird's foot, little white bird's-foot

Stems

10–50 cm.

5–30 cm.

Leaves

30–60 × 10–15 mm;

stipules linear, 1 mm;

leaflets 15–37, blades elliptical to oblong-lanceolate, leaflets of larger leaves 5–9 × 2–3 mm.

10–40 × 5–10 mm;

stipules deltate, 1 mm;

leaflets 15–27, blades ovate, elliptic, or oblong, leaflets of larger leaves 3–6 × 1–3 mm.

Peduncles

1.5–2 cm in flower, 4–6 cm in fruit.

1–3 cm in flower, 2–5 cm in fruit.

Pedicels

0–1 mm.

0–1 mm.

Flowers

calyx 3.5–4.3 mm, lobes 1.2–1.8 mm, more than 1/2 tube length;

corolla yellow, 5–8 mm.

calyx 2–2.5 mm, lobes 0.4–0.7 mm, 1/4–1/3 tube length;

corolla white or pink, sometimes with darker lines, 3–5 mm.

Heads

3–8-flowered, 7–10 mm diam.;

bract equaling or longer than flowers, 7–9-foliolate.

3–8-flowered, 5 mm diam.;

bract equaling or longer than flowers, 5–9-foliolate.

Seeds

2 × 1.5 mm.

1 × 1 mm.

Loments

weakly compressed, not or slightly constricted between seeds, 20–50 × 2–3 mm;

segments 5–8, oblong, 3.5–4 mm;

beaks ± curved, 3–7 mm.

compressed, constricted between seeds, 10–18(–25) × 1.5–2 mm;

segments 4–9, elliptic-oblong, 2–2.5 mm;

beaks straight, often hooked at tip, 1–3 mm.

2n

= 14.

= 14.

Ornithopus compressus

Ornithopus perpusillus

Phenology Flowering late spring–early summer. Flowering late spring–summer.
Habitat Disturbed open areas, waste places. Disturbed ground, roadsides, waste places.
Elevation 10–30 m. (0–100 ft.) 10–50 m. (0–200 ft.)
Distribution
from FNA
OR; Europe; w Asia [Introduced in North America; introduced also in Australia]
[BONAP county map]
from FNA
OR; PA; BC; Europe; temperate w Asia [Introduced in North America]
[BONAP county map]
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Ornithopus Fabaceae > subfam. Faboideae > Ornithopus
Sibling taxa
O. perpusillus, O. sativus
O. compressus, O. sativus
Name authority Linnaeus: Sp. Pl. 2: 744. (1753) Linnaeus: Sp. Pl. 2: 743. (1753)
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