Ivesia argyrocoma

(Rydberg) Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 22: 284. 1908.

Conservation concern
Basionym: Horkelia argyrocoma Rydberg Monogr. N. Amer. Potentilleae, 144, plate 84. 1898
Synonyms: Potentilla argyrocoma (Rydberg) Jepson
Treatment appears in FNA Volume 9. Treatment on page 242. Mentioned on page 237, 238.

Discussion

Varieties 2 (1 in the flora).

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.

Selected References

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Ivesia argyrocoma"
not carunculate +
less as-long-as to longer than wide +  and more +
Barbara Ertter +  and James L. Reveal +
(Rydberg) Rydberg in N. L. Britton et al. +
compound +  and simple +
opposite +  and alternate +
Horkelia argyrocoma +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
narrowly oblong +  and filiform planar +
0.5 cm5 mm <br />0.005 m <br /> (20 cm200 mm <br />0.2 m <br />) +
reduced +
elongate +
free +  and distinct +
branched +  and simple +
Calif. +  and nw Mexico +
not +  and aggregated +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
obliquely ovoid +  and reniform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
loose +  and capitate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
open to congested +
crassinucellate +
opposite +  and alternate +
winter-marcescent +
deciduous +  and persistent +
, +  and distinct +
not +  and distinguishable +
oblanceolate +  and oval or obovate +
verticillate +
toothed +, unlobed +  and lobed +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0 (?) +  and 4 (?) +
free +  and distinct +
adnate +, free +, connate +  and distinct +
in N. L. Britton et al., N. Amer. Fl. +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
Conservation concern +
free +  and distinct +
branched +  and simple +
reddish +, grayish +  and green +
pendent +  and erect +
2 +  and 20 +
palmate +  and pinnate +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
Potentilla argyrocoma +
Ivesia argyrocoma +
Ivesia sect. Unguiculatae +
species +
glabrate +  and hairy +
inconspicuous +
stipelike +, elongate +, less flat +  and conic or turbinate +
enlarged +
tufted +  and rosetted +
plant +  and matted +
glabrate +  and sparsely densely glandular-puberulent +