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FNA | Family List | FNA Vol. 9 | Rosaceae | Ivesia

27. Ivesia argyrocoma (Rydberg) Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 284. 1908.

Horkelia argyrocoma Rydberg, Monogr. N. Amer. Potentilleae, 144, plate 84. 1898; Potentilla argyrocoma (Rydberg) Jepson

Varieties 2 (1 in the flora): California, nw Mexico.

Plants from the central Sierra San Pedro Mártir in northern Baja California belong to var. moranii Ertter & Reveal, which may be distinguished by its compact stature (to 0.5 dm), densely villous basal stipules 2–4 mm, decumbent stems 2–7 cm that are stipitate-glandular under the villous indumentum, and solitary, loosely congested cyme. The petals are oblanceolate to narrowly obovate and 2.5–3.5 mm. The grayish, faintly mottled achenes are 1.3–2 mm.

Lower Taxon


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