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San Pedro false prairie-clover

Habit Herbs, decumbent, 0.5–2 dm.
Stems

branched or simple, eglandular or nearly so, strigulose.

Leaves

1–3 cm;

leaflets (9 or)11–25, blades obovate to oblong-obovate, 1.5–7 mm, surfaces pubescent, not gland-dotted abaxially.

Racemes

moderately densely flowered;

axis (1–)1.5–6.5 cm;

bracts 2.5–4 mm.

Peduncles

0.3–3 cm.

Pedicels

0.3–0.6 mm.

Flowers

nodding;

calyx 5.2–7 mm, hirtellous, tube 1.8–2.5 mm, rib intervals each with ± 5 glands, lobes lanceolate-elliptic, slightly unequal;

corolla bicolored;

banner whitish or pinkish tan, blue or purplish near margin, deltate-cordate to reniform, 3.7–5 mm; epistemonous petals whitish, blue or purplish on margins;

wings obliquely ovate, 3.3–4.2 × 2.1–2.8 mm;

keel broadly ovate or obovate, 4.3–5.8 × 3–3.7 mm;

stamens 7–8 mm;

filaments distinct to 2.5–3 mm;

anthers 0.7–1 mm.

Seeds

2 mm.

Loments

obliquely obovoid, 2.6–3 mm, puberulent, with arcs of glands distally.

Marina calycosa

Phenology Flowering spring–early summer (late summer–fall).
Habitat Rocky or sandy hillsides in oak woodlands, dry grassland.
Elevation 1200–2500 m. (3900–8200 ft.)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Nuevo León, Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

Marina calycosa is similar in habit and overall appearance to Dalea neomexicana, which it overlaps in range and with which it has, sometimes, been confused.

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

Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Marina
Sibling taxa
M. diffusa, M. orcuttii, M. parryi
Synonyms Dalea calycosa
Name authority (A. Gray) Barneby: Mem. New York Bot. Gard. 27: 83. (1977)
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