Minuartia cumberlandensis

(Wofford & Kral) McNeill

Rhodora 82: 498. 1980.

Common names: Cumberland stitchwort
EndemicConservation concern
Basionym: Arenaria cumberlandensis Wofford & Kral Brittonia 31: 257, fig. 1. 1979
Treatment appears in FNA Volume 5. Treatment on page 123. Mentioned on page 116, 119.

Plants perennial, cespitose from decumbent bases. Taproots filiform; basal offshoots present. Stems erect or ascending, green, (8–) 10–15 (–20) cm, glabrous, internodes of flowering-stems 0.8–1.2 times as long as leaves. Leaves overlapping proximally, variably spaced distally, connate proximally, with ± loose, scarious sheath 0.1–0.2 mm; blade spreading or ascending to outwardly curved, green, flat, 1-veined, linear-oblanceolate to linear-spatulate, (10–) 20–30 (–40) × 1–3 mm, flexuous, margins not thickened, minutely scarious, smooth, apex green, obtuse to broadly acute, shiny, glabrous, axillary leaves absent. Inflorescences flowers solitary, terminal, or 1–3-flowered cymes; bracts narrowly lanceolate, herbaceous. Pedicels 12–30 cm, glabrous. Flowers: hypanthium dish-shaped; sepals very weakly 3-veined, broadly oblong (herbaceous portion broadly oblong), 2–3 mm, not enlarging in fruit, apex green, obtuse or rounded, not hooded, glabrous; petals oblong or obovate, 1.6–2 times as long as sepals, apex rounded to truncate, entire or slightly emarginate. Capsules broadly ovoid, (2–) 3–3.5 mm, equaling or longer than sepals. Seeds reddish-brown, asymmetrically reniform with radicle prolonged into beak, not compressed, 0.5–0.7 mm, reticulate. 2n = 20.


Phenology: Flowering summer.
Habitat: Shaded sand-rock ledges and bluffs
Elevation: 400-600 m

Discussion

Of conservation concern.

Minuartia cumberlandensis may be most closely related to M. groenlandica and M. glabra; R. Kral (1983) noted that it may be distinguished from either of those taxa by leaf size and shape, seed sculpture, phenology, and habitat preference (shaded sandstone versus sunny granitic flat-rocks).

Minuartia cumberlandensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

"-1.2timesaslongasleaves" is not declared as a valid unit of measurement for this property."-2timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Minuartia cumberlandensis"
not hooded +  and 1-veined +
emarginate +  and entire +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
flexuous +  and curved +
2 cm20 mm <br />0.02 m <br /> (?) +  and 3 cm30 mm <br />0.03 m <br /> (?) +
not thickened +
scarious +
1mm;3mm +
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
(Wofford & Kral) McNeill +
Arenaria cumberlandensis +
ovate +, filiform-linear +  and subulate lanceolate or oblanceolate +
? (?) +  and ? (?) +
lanceolate +
reduced +
scarious +  and herbaceous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Cumberland stitchwort +
1-3-flowered +
axillary +  and terminal +
dish--shaped +
expanded +
Ky. +  and Tenn. +
400-600 m +
straight +  and curved +
central +  and peripheral +
axillary +  and terminal +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Shaded sand-rock ledges and bluffs +
disc--shaped +  and dish +
spaced +  and overlapping +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
flexuous +  and curved +
connate +
20mm;30mm +
obtuse +  and broadly acute +
not thickened +
scarious +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
flexuous +  and curved +
20mm;30mm +
obtuse +  and broadly acute +
not thickened +
1mm +  and 3mm +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
reflexed;erect;arcuate-spreading +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Lilac (?) +, Pink (?) +  and White (?) +
fugacious +
Obovate (?) +  and Oblong (?) +
Flowering summer. +
prolonged +
muriculate-papillate +  and tuberculate +
not compressed +  and reniform +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
distinct +
not enlarging +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Endemic +  and Conservation concern +
branched +  and simple +
ascending;erect +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 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 cumberlandensis +
Minuartia +
species +
divided +
10 +  and 8 +
erect +  and recurved +
rhizomatous +  and taprooted +
plant +  and cespitose +
pubescence of simple hairs or stalked glands +  and glabrous +
23 +, 15 +, 14 +, 13 +, 12 +, 10 +, 9 +  and 7 +