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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.


Annual, slender; minutely strigose. Stem: prostrate or ± ascending, 4–45 cm. Leaf: 1.5–6.5 cm; leaflets 5–13, 2–10 mm, at least upper elliptic, acute at tips, lower blunt or not, notched at tip. Inflorescence: flowers 1–4. Flower: 4–7 mm; corolla ± white, faintly lilac-tinged (± purple). Fruit: 10–20 mm, 2–3 mm wide, linear in side view, gently curved near base, ± straight toward tip, ± 3-sided (laterals ± convex, lower grooved), maturing dark brown or ± black, glabrous or minutely strigose; chambers ± 2. See note under Astragalus acutirostris; varieties intergrade; Astragalus nuttallianus var. austrinus (Small) Barneby (calyx lobes generally 1.8–2.8 mm, hairs 0.7–1.2 mm, spreading, stiff) near California, in western Arizona. [Online Interchange]

Key to Astragalus nuttallianus

1. Calyx lobes generally 1.8–2.8 mm, hairs 0.7–1.2 mm, spreading, very stiff ..... var. austrinus

1' Calyx lobes generally 1–1.7 mm, hairs 0.5–0.8 mm, ascending, not very stiff

2. Leaflet tips notched on lower leaves, acute on upper; calyx tube 1.4–1.7 mm ..... var. cedrosensis

2' Leaflet tips acute; calyx tube 1.9–2.8 mm ..... var. imperfectus


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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