Minuartia stolonifera

T. W. Nelson & J. P. Nelson

Brittonia 43: 17, fig. 1. 1991.

Common names: Stolon or Scott Mountain sandwort
EndemicConservation concern
Treatment appears in FNA Volume 5. Treatment on page 134. Mentioned on page 119, 124, 129, 130, 133.

Plants perennial, mat-forming. Taproots moderately stout, woody. Stems ± erect, gray-green, 10–20 cm, glabrous or often stipitate-glandular, especially distally, internodes of stems 1–6 times as long as leaves (proximal leaves often shorter than internodes), 2–3 stolons radiating from crown, 6–20 cm. Leaves overlapping, loosely proximally, evenly spaced, connate proximally, with tight, scarious sheath 0.3–0.8 mm; blade ± straight to outwardly curved, gray-green, shallowly concave, 3-veined, often prominently so abaxially, needlelike, 5–11 × 0.5–0.9 mm, rigid, margins not thickened, scarious in proximal 1/2, stipitate-glandular, apex green to purple, acute to obtuse, navicular, dull, stipitate-glandular throughout; axillary leaves weakly developed among proximal cauline leaves. Inflorescences 7–25-flowered, open cymes; bracts lanceolate to subulate, herbaceous, margins scarious. Pedicels 0.3–1.5 cm, often stipitate-glandular. Flowers: hypanthium disc-shaped; sepals 1–3-veined (weakly in flower), ovate to lanceolate, (herbaceous portion narrowly lanceolate to linear-oblong), 3.5–4.8 mm, not enlarging in fruit, apex green to purple, narrowly acute to acuminate, not hooded, stipitate-glandular; petals broadly oblanceolate, 1.6–1.8 times as long as sepals, apex rounded, entire. Capsules sessile, ovoid, 3.5–5 mm, equaling sepals. Seeds reddish-brown to brown, oblongelliptic, 2–2.4 mm, tuberculate.


Phenology: Flowering spring–summer.
Habitat: Jeffrey pine woodlands, serpentine soils
Elevation: 1200-1400 m

Discussion

Of conservation concern.

Minuartia stolonifera, like M. decumbens and M. rosei, is restricted to serpentine soils of northwestern California, specifically to Scott Mountain in Siskiyou County. The three species are most closely related to the polymorphic M. nuttallii.

Selected References

None.

Lower Taxa

None.

"-6timesaslongasleaves" is not declared as a valid unit of measurement for this property."-1.8timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Minuartia stolonifera"
green +  and purple +
stipitate-glandular +
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
T. W. Nelson & J. P. Nelson +
less straight +  and outwardly curved +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
concave +
0.5mm;0.9mm +
lanceolate +  and subulate +
reduced +
scarious +  and herbaceous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Stolon or Scott Mountain sandwort +
axillary +  and terminal +
dish--shaped +
expanded +
1200-1400 m +
straight +  and curved +
central +  and peripheral +
axillary +  and terminal +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Jeffrey pine woodlands, serpentine soils +
disc--shaped +  and dish +
sessile +  and petiolate +
spaced +  and overlapping +
connate +
stipitate-glandular +
not thickened +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
reflexed;erect;arcuate-spreading +
stipitate-glandular +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Lilac (?) +, Pink (?) +  and White (?) +
fugacious +
Flowering spring–summer. +
tuberculate +
oblongelliptic +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
distinct +
ovate;lanceolate +
not enlarging +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Endemic +  and Conservation concern +
branched +  and simple +
gray-green +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
[30 +  and 3 +
papillate +
distinct +
filiform +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Alsinanthe +, Alsinopsis +, Lidia +, Minuopsis +, Porsildia +, Sabulina +, Tryphane +  and Wierzbickia +
Minuartia stolonifera +
Minuartia +
species +
divided +
10 +  and 8 +
erect +  and recurved +
rhizomatous +  and taprooted +
plant +  and mat-forming +
pubescence of simple hairs or stalked glands +  and glabrous +
23 +, 15 +, 14 +, 13 +, 12 +, 10 +, 9 +  and 7 +