Minuartia macrocarpa

(Pursh) Ostenfeld

Meddel. Grønland 37: 226. 1920.

Common names: Long-pod stitchwort large-fruited sandwort
Basionym: Arenaria macrocarpa Pursh Fl. Amer. Sept. 1: 318. 1813
Synonyms: Alsinopsis macrocarpa (Pursh) A. Heller Wierzbickia macrocarpa (Pursh) Reichenbach
Treatment appears in FNA Volume 5. Treatment on page 127. Mentioned on page 116, 118, 119, 120, 128.

Plants perennial, mat-forming. Taproots stout, woody. Stems erect to ascending, green, 3–10 cm, glabrous or sometimes stipitate-glandular, internodes of flowering-stems 1–5 times as long as leaves. Leaves tightly overlapping (vegetative), variably spaced (cauline), usually connate proximally, with tight, scarious to herbaceous sheath 1–1.5 mm; blade straight to outwardly curved, green, flat, 3-veined, often prominently so abaxially, linear to oblong or narrowly lanceolate, 4–14 × 0.5–2 mm, flexuous, margins thickened, ± coriaceous, ciliate, often densely so, apex green, rounded, navicular, shiny, glabrous or essentially so throughout or abaxially, sometimes pubescent adaxially, hairs resembling cilia; axillary leaves present among vegetative leaves. Inflorescences solitary flowers, terminal; bracts linear, herbaceous. Pedicels 0.4–1 cm, usually densely stipitate-glandular. Flowers: hypanthium cupshaped; sepals prominently 3-veined proximally, lanceolate to oblong (herbaceous portion often purple, lanceolate to oblong), 4.5–6 mm, to 9 mm in fruit, apex often purple, rounded, hooded, stipitate-glandular; petals broadly obovate, 1.2–1.6 times as long as sepals, apex blunt or rounded, entire. Capsules narrowly ellipsoid, 10–18 mm, longer than sepals. Seeds redbrown to brown, orbiculate with radicle prominent and notch filled with papillae, somewhat compressed, 1–1.1 mm (excluding papillae), rounded-tuberculate, ringed with longitudinal, cylindrical, tan papillae 0.5–0.8 mm. 2n = 44 (Russia), 46, 48 (Russia).


Phenology: Flowering spring–summer.
Habitat: Rocky, montane ridges, sandy slopes, well-drained alpine tundra and heathlands
Elevation: 0-2200 m

Distribution

V5 260-distribution-map.gif

B.C., N.W.T., Yukon, Alaska, Asia (Japan), Asia (Russian Far East), Asia (Siberia)

Discussion

An amphi-Beringian species, Minaurtia macrocarpa is easily distinguished by having the largest capsules of any North American Minuartia.

Selected References

None.

Lower Taxa

None.

"-5timesaslongasleaves" is not declared as a valid unit of measurement for this property."-1.6timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Minuartia macrocarpa"
48 +, 46 +  and 44 +
stipitate-glandular +, pubescent +, essentially +  and glabrous +
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
(Pursh) Ostenfeld +
Arenaria macrocarpa +
flexuous +, straight +  and outwardly curved +
0.4 cm4 mm <br />0.004 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
linear +  and oblong or narrowly lanceolate +
? (?) +  and ? (?) +
0.5mm;2mm +
reduced +
scarious +  and herbaceous +
ellipsoid +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Long-pod stitchwort +  and large-fruited sandwort +
axillary +  and terminal +
dish--shaped +
expanded +
B.C. +, N.W.T. +, Yukon +, Alaska +, Asia (Japan) +, Asia (Russian Far East) +  and Asia (Siberia) +
0-2200 m +
straight +  and curved +
central +  and peripheral +
axillary +  and terminal +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Rocky, montane ridges, sandy slopes, well-drained alpine tundra and heathlands +
disc--shaped +  and dish +
sessile +  and petiolate +
spaced +  and overlapping +
connate +
swollen +
ringed +  and rounded-tuberculate +
compressed +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
cylindrical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
reflexed;erect;arcuate-spreading +
stipitate-glandular +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Lilac (?) +, Pink (?) +  and White (?) +
fugacious +
Flowering spring–summer. +
Meddel. Grønland +
muriculate-papillate +  and tuberculate +
orbiculate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
distinct +
lanceolate;oblong +
0 cm0 mm <br />0 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
scarious +  and herbaceous +
branched +  and simple +
erect;ascending +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 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 />) +
Alsinopsis macrocarpa +  and Wierzbickia macrocarpa +
Minuartia macrocarpa +
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 +