Minuartia uniflora
Minuartia stolonifera
one-flower stitchwort
Scott Mountain sandwort, stolon or Scott Mountain sandwort, stolon sandwort
filiform.
moderately stout, woody.
erect to ascending, green, 7–20 cm, glabrous, internodes of stems 1–7 times as long as leaves.
± 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.
not overlapping, connate proximally, with tight, herbaceous or scarious sheath 0.1–0.3 mm;
blade straight to outwardly curved, widely spreading, green, flat, 1-veined abaxially, especially proximal, narrowly lanceolate to oblong, commonly linear, 2–20 × 0.3–1.5 mm, flexuous, margins not thickened, scarious, smooth, apex green to purple, rounded to acute, dull, glabrous;
axillary leaves poorly developed.
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.
7–25+-flowered, open cymes;
bracts subulate to ovate, herbaceous, margins scarious.
7–25-flowered, open cymes;
bracts lanceolate to subulate, herbaceous, margins scarious.
0.5–5 cm, glabrous.
0.3–1.5 cm, often stipitate-glandular.
hypanthium disc-shaped;
sepals obscurely veined, ovate to elliptic or lanceolate (herbaceous portion elliptic to lanceolate), 2–3.5 mm, not enlarging in fruit, apex green, obtuse to rounded, not hooded, glabrous;
petals oblanceolate to spatulate, 1.5–2.5 times as long as sepals, apex rounded, entire to shallowly notched.
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.
on stipe shorter than 0.1 mm, pyramidal-ovoid, 3.5–4 mm, longer than sepals.
sessile, ovoid, 3.5–5 mm, equaling sepals.
yellowish brown, suborbiculate with radicle obscure, slightly compressed, 0.4–0.6 mm, tuberculate;
tubercles low, rounded.
reddish brown to brown, oblong-elliptic, 2–2.4 mm, tuberculate.
= 14.
Minuartia uniflora
Minuartia stolonifera
Minuartia alabamensis was originally described to accommodate much-reduced plants from Alabama (J. F. McCormick et al. 1971). Subsequent studies have shown them to be conspecific with M. uniflora (R. Wyatt 1984).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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