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Photo is of parent taxon

Greene's milkvetch

Photo is of parent taxon

diehl's milkvetch

Herbage

greenish cinereous.

greenish cinereous.

Stems

15–40 cm.

usually obviously flexuous, 15–30(–40) cm.

Leaflets

(9–)13–23, blades linear-oblong to obovate-cuneate.

(7–)11–17, blades mostly linear or narrowly oblong-oblanceolate.

Racemes

(7–)10–30-flowered;

axis (1–)2.5–10 cm in fruit.

12–26-flowered;

axis 2.5–9.5 cm in fruit.

Peduncles

1.5–13.5 cm.

2.5–7 cm.

Flowers

9–10.8 mm;

calyx 3.5–6 mm, tube 2.8–4.2 mm, lobes 0.8–2 mm;

corolla banner recurved through 45–50°;

keel incurved through 90–100°, semiobovate, 7–8.2 mm.

7–9 mm;

calyx 3.3–4.1 mm, tube 1.9–2.3 mm, lobes 0.7–1.1(–1.4) mm;

corolla banner abruptly recurved through 90°;

keel very strongly incurved through 120°, semiorbiculate, 5–5.5 mm.

Legumes

lanceoloid-ellipsoid to plumply ellipsoid, oblong-ellipsoid, or ovoid-ellipsoid, turgid or inflated, (12–)14–23 × (4–)5–9 mm, base rounded when less than 5 mm wide, strigulose or villosulous;

stipe 0–0.5 mm.

oblong-ellipsoid, turgid or inflated, 11–15(–20) × 3–4(–4.5) mm, strigulose;

sessile.

Seeds

16–25.

12–18.

2n

= 22.

Astragalus flexuosus var. greenei

Astragalus flexuosus var. diehlii

Phenology Flowering Apr–Jun. Flowering late Apr–Jun.
Habitat Badlands, other semibarrens with pinyon-juniper or oak. Salt desert shrub and pinyon-juniper communities, on fine-textured substrates.
Elevation 1300–2600 m. (4300–8500 ft.) 1300–2100 m. (4300–6900 ft.)
Distribution
from FNA
AZ; NM
[BONAP county map]
from FNA
AZ; CO; NM; UT
[BONAP county map]
Discussion

Variety greenei closely resembles var. diehlii and, except for a small geographical disjunction, they easily could be combined.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus > sect. Scytocarpi > Astragalus flexuosus Fabaceae > subfam. Faboideae > Astragalus > sect. Scytocarpi > Astragalus flexuosus
Sibling taxa
A. flexuosus var. diehlii, A. flexuosus var. flexuosus
A. flexuosus var. flexuosus, A. flexuosus var. greenei
Synonyms A. greenei A. diehlii
Name authority (A. Gray) Barneby: Leafl. W. Bot. 9: 91. (1960) (M. E. Jones) Barneby: Leafl. W. Bot. 4: 54. (1944)
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