Primula tschuktschorum

Kjellman in A. E. Nordenskiöld

in A. E. Nordenskiöld, Vega Exp. Vetensk. Iakttag. 1: 516, plate 9. 1882 ,.

Common names: Chukchi primrose
Synonyms: Primula beringensis (A. E. Porsild) Jurtzev Primula tschuktschorum subsp. beringensis (A. E. Porsild) Jurtzev & Kozhevnikov Primula tschuktschorum var. beringensis A. E. Porsild
Treatment appears in FNA Volume 8. Treatment on page 297. Mentioned on page 287, 288, 290, 296.
Revision as of 12:07, 30 July 2020 by imported>Volume Importer
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Plants 2–15 cm, herbaceous; rhizomes thick, short; rosettes not clumped; vegetative parts completely efarinose. Leaves not aromatic, indistinctly petiolate; petiole winged; blade without deep reticulate veins abaxially, linear-lanceolate, 4–5 × 0.2–0.4 cm, fleshy, margins entire or remotely denticulate, apex acute, surfaces glabrous. Inflorescences 1–3 (–6) -flowered; involucral-bracts plane at base, ± equal. Pedicels erect to slightly reflexed, somewhat thick, 2–10 mm, length ca. 1–2 times bracts, flexuous. Flowers heterostylous; calyx green or greenish black, campanulate, 5–7 mm; corolla rose-magenta, tube 5–7 mm, length 1 times calyx, eglandular, limb 10–20 mm diam., lobes 5–10 mm, apex unlobed or rarely cleft to base. Capsules broadly cylindric, length 2 times calyx. Seeds without flanged edges, vesiculate. 2n = 22.


Phenology: Flowering summer.
Habitat: Moist, frost-patterned ground and gravelly stream banks or rivulets on tundra
Elevation: 0-400 m

Distribution

V8 591-distribution-map.gif

Alaska, e Asia (Russian Far East)

Discussion

Primula tschuktschorum has a long history of taxonomic confusion with its close relative P. pumila, from which it is distinguished by its heterostylous flowers, more delicate appearance, and lack of farina. It appears to be restricted in North America to the Bering Strait region of Alaska between the Seward Peninsula and Bristol Bay, where it grows occasionally in coastal areas and more commonly at higher elevations in the mountains around late-lying snowbanks.

Selected References

None.

Lower Taxa

None.

"timescalyx" is not declared as a valid unit of measurement for this property."-2timesbracts" is not declared as a valid unit of measurement for this property."thick" is not a number."timescalyx" is not declared as a valid unit of measurement for this property.

... more about "Primula tschuktschorum"
cleft;unlobed;acute +
Sylvia Kelso +
Kjellman in A. E. Nordenskiöld +
narrowed +, rounded +  and tapered +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
crenulate +  and denticulate +
linear-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 +  and 5 +
greenish black;green +
puberulent +, pilose +  and glabrous +
campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
cylindric +
Chukchi primrose +
rose-magenta +
campanulate +
Alaska +  and e Asia (Russian Far East) +
flanged +
0-400 m +
heterostylous +
operculate +  and capsular +
Moist, frost-patterned ground and gravelly stream banks or rivulets on tundra +
nectariferous +
solitary +, involucrate +  and 2-25+-flowered +
not aromatic +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not reflexed +
denticulate +  and entire +
tenuinucellate +  and bitegmic +
erect +  and slightly reflexed +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
yellow;white;yellow;white;violet;rose;pink;magenta;lavender +
Flowering summer. +
in A. E. Nordenskiöld, Vega Exp. Vetensk. Iakttag. +
4-angled +, oblong +  and ovoid +
connate +  and distinct +
inflated +
Primula beringensis +, Primula tschuktschorum subsp. beringensis +  and Primula tschuktschorum var. beringensis +
Primula tschuktschorum +
species +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
perennial +  and annual +
stoloniferous +  and rhizomatous +
11 +, [10 +, 9 +  and [8 +