Eremogone ursina

(B. L. Robinson) Ikonnikov

Novosti Syst. Vyssh. Rast. 10: 140. 1973.

Common names: Bear Valley sandwort
EndemicConservation concern
Basionym: Arenaria ursina B. L. Robinson Proc. Amer. Acad. Arts 29: 294. 1894
Treatment appears in FNA Volume 5. Treatment on page 70. Mentioned on page 58.

Plants tufted, green, not glaucous, with somewhat woody base. Stems ascending to erect, 10–18 cm, often glandular-hairy. Leaves: basal leaves persistent; cauline leaves in 3–5 pairs, reduced distally; basal blades erect to ± spreading, needlelike, 0.5–1.1 (–1.6) cm × 0.5–0.7 mm, rigid, herbaceous, not fleshy, apex blunt to apiculate, glabrous, ± glaucous. Inflorescences (1–) 3–7-flowered, ± open cymes. Pedicels 0.3–2 mm, stipitate-glandular. Flowers: sepals 1–3-veined, lateral-veins less developed, ovate, often broadly so, 1.8–3 mm, to 4.2 mm in fruit, margins broad, apex obtuse or rounded, glabrous; petals white, elliptic to oblanceolate, 2–4.5 mm, 1.4–1.6 times as long as sepals, apex rounded; nectaries as lateral and abaxial rounding of base of filaments opposite sepals, with terminal lateral groove, 0.3 mm. Capsules 4.5–6 mm, glabrous. Seeds blackish purple, suborbicular to broadly ellipsoid with hilar notch, 2.2–2.5 (–3) mm, tuberculate; tubercles rounded, elongate.


Phenology: Flowering late spring–summer.
Habitat: Pinyon-juniper woodlands on rocky (quartzite) soils
Elevation: 1900-2100 m

Discussion

Of conservation concern.

Eremogone ursina is known from four counties in southern California, where it is threatened by development. It is relatively distinctive in appearance and markedly separated spatially from congeners.

Selected References

None.

Lower Taxa

None.
... more about "Eremogone ursina"
spinose +  and apiculate +
glabrous +  and glaucous +
rounded;rounded;obtuse;blunt;apiculate +
Ronald L. Hartman +, Richard K. Rabeler +  and Frederick H. Utech +
(B. L. Robinson) Ikonnikov +
1.1 cm11 mm <br />0.011 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
not fleshy +  and rigid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Arenaria ursina +
filiform +  and subulate or narrowly linear +
not +  and succulent +
reduced +
ovoid;urceolate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Bear Valley sandwort +
dish--shaped +
expanded +
1900-2100 m +
straight +  and curved +
central +  and peripheral +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Pinyon-juniper woodlands on rocky (quartzite) soils +
disc--shaped +  and dish +
0 cm0 mm <br />0 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
connate +
0.3 cm3 mm <br />0.003 m <br /> (?) +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
stipitate-glandular +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
fugacious +
1.4-1.6 times as long as sepals +
elliptic +  and oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Flowering late spring–summer. +
Novosti Syst. Vyssh. Rast. +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
blackish purple +
tuberculate +
suborbicular +  and broadly ellipsoid +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
persistent +
connate +  and distinct +
linear-lanceolate;ovate +
0.18 cm1.8 mm <br />0.0018 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Endemic +  and Conservation concern +
branched +  and simple +
ascending;erect +
glandular-hairy +
10 cm100 mm <br />0.1 m <br /> (18 cm180 mm <br />0.18 m <br />) +
[50 +  and 3 +
smooth +  and papillate +
distinct +
filiform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
stout +  and slender +
Eremogone ursina +
Eremogone +
species +
ascending;recurved +
divided +
elongate +  and rounded +
10 +  and 8 +
rhizomatous +  and taprooted +