Minuartia yukonensis

Hultén

Ark. Bot., n. s. 7: 521968.

Common names: Yukon stitchwort
Synonyms: Lidia yukonensis (Hultén) Á. Löve & D. Löve
Treatment appears in FNA Volume 5. Treatment on page 136. Mentioned on page 118.

Plants perennial, mat-forming. Taproots stout, woody. Stems erect to ascending, green, 10–30 cm, minutely retrorsely pubescent proximally, flowering-stems stipitate-glandular, usually densely so, internodes of flowering-stems 3–5 times as long as leaves. Leaves tightly overlapping (vegetative), variably spaced (cauline), usually connate proximally, with tight, scarious to herbaceous sheath 0.5–1.8 mm; blade straight to outwardly curved, green, flat, 3-veined abaxially, midvein more prominent than 2 lateral-veins, filiform-linear, 10–18 × 0.8–1.3 mm, flexuous, margins not thickened, scarious, ciliate, often sparsely so, apex green, often with white callosity, acuminate-pungent, flat to slightly navicular, shiny, glabrous; axillary leaves present among vegetative leaves. Inflorescences 3–13-flowered, open cymes; bracts lanceolate, herbaceous. Pedicels 2–5 cm, densely stipitate-glandular. Flowers: hypanthium cupshaped; sepals prominently 3-veined, lanceolate to oblong-lanceolate (herbaceous lanceolate to oblong-lanceolate), 6–8 mm, not enlarging in fruit, apex green to purplish, rounded, hooded, stipitate-glandular, especially proximally; petals oblanceolate, 1.3–1.5 times as long as sepals, apex rounded, entire. Capsules narrowly ellipsoid, 7–10 mm, longer than sepals. Seeds reniform, ca. 1 mm, tuberculate.


Phenology: Flowering spring–summer.
Habitat: Dry, rocky slopes and meadows, scree slopes into alpine zone
Elevation: 0-1000 m

Distribution

V5 279-distribution-map.gif

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

Discussion

Minuartia yukonensis is an amphi-Beringian species, reported from two sites in the Russian Far East. Some collections of it may be labeled as Arenaria laricifolia Linnaeus, a European species to which Alaskan material has been misattributed.

Selected References

None.

Lower Taxa

None.

"-5timesaslongasleaves" is not declared as a valid unit of measurement for this property."-1.5timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Minuartia yukonensis"
green +  and purplish +
stipitate-glandular +  and glabrous +
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
Hultén +
straight +  and outwardly curved +
ovate +, filiform-linear +  and subulate lanceolate or oblanceolate +
? (?) +  and ? (?) +
lanceolate +
reduced +
scarious +  and herbaceous +
ellipsoid +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Yukon stitchwort +
axillary +  and terminal +
dish--shaped +
expanded +
B.C. +, N.W.T. +, Yukon +, Alaska +  and Asia (Russian Far East) +
0-1000 m +
straight +  and curved +
central +  and peripheral +
axillary +  and terminal +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Dry, rocky slopes and meadows, scree slopes into alpine zone +
disc--shaped +  and dish +
sessile +  and petiolate +
spaced +  and overlapping +
connate +
not thickened +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
more prominent +
0.8mm;1.3mm +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
reflexed;erect;arcuate-spreading +
stipitate-glandular +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Lilac (?) +, Pink (?) +  and White (?) +
fugacious +
Flowering spring–summer. +
Ark. Bot., n. s. +
tuberculate +
reniform +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
distinct +
lanceolate;oblong-lanceolate +
not enlarging +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
scarious +  and herbaceous +
branched +  and simple +
erect;ascending +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 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 />) +
Lidia yukonensis +
Minuartia yukonensis +
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 +