Ranunculus sulphureus

Solander in C. J. Phipps

in C. J. Phipps, Voy. North Pole, 202. 1774.

Common names: Renoncule soufrée
Synonyms: Ranunculus sulphureus var. intercedens Hultén
Treatment appears in FNA Volume 3.

Stems erect from short caudices, 3-20 cm, sparsely pilose to glabrous, each with 1-3 flowers. Roots slender, 0.4-1 mm thick. Basal leaves persistent, blades transversely elliptic to orbiculate, 1-3 × 1-3 cm, base obtuse to nearly truncate, margins crenate or else blades shallowly 3-lobed with crenate lateral lobes, apex rounded or rounded-apiculate. Flowers: pedicels sparsely brown-pilose; receptacle brown-pilose; sepals 6-8 × 3-6 mm, abaxially densely brown-hispid; petals 5 (-6), 8-12 × 6-10 mm; nectary scale glabrous. Heads of achenes ovoid-cylindric or ovoid, 6-7 (-9) × 5-6 mm; achenes 1.8-2.2 × 1.4-1.8 mm, glabrous or sparsely brown-hispid; beak slender, straight or curved, 0.8-1.4 mm. 2n = 42, ca. 80, ca. 84, 96, ca. 98.


Phenology: Flowering late spring–summer (Jun–Sep).
Habitat: Meadows and seepy slopes, often around late snowbeds, bogs, and streamsides
Elevation: 0-1100 m

Distribution

V3 1013-distribution-map.gif

Greenland, B.C., Nfld. and Labr. (Nfld.), N.W.T., Que., Yukon, Alaska, Eurasia

Discussion

Material of Ranunculus sulphureus from the Aleutian Islands has 3-lobed leaves similar to those of R. nivalis. These plants are sometimes separated as R. sulphureus var. intercedens.

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus sulphureus"
98 +, 96 +, 84 +, 80 +  and 42 +
not prolonged +
asymmetrically thick-lenticular +  and compressed-globose +
1.2-2 times as wide as thick +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
brown-hispid +  and glabrous +
1.4mm;1.8mm +
rounded-apiculate +  and rounded +
Alan T. Whittemore +
Solander in C. J. Phipps +
obtuse +  and nearly truncate +
Ranunculus sect. Marsypadenium +
curved +  and straight +
slender +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3-lobed;transversely elliptic;orbiculate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
large +  and small +
globose;cylindric +
sometimes;sessile;nearly sessile +
Renoncule soufrée +
1-50-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Greenland +, B.C. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Que. +, Yukon +, Alaska +  and Eurasia +
0-1100 m +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Meadows and seepy slopes, often around late snowbeds, bogs, and streamsides +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
ovoid;ovoid-cylindric +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
axillary +  and terminal +
reniform +  and linear +
compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
parted +  and lobed +
palmate +  and pinnate +
inconspicuous +
else;crenate +
brown-pilose +
distinct +
8mm;12mm +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering late spring–summer (Jun–Sep). +
4 +  and 250 +
in C. J. Phipps, Voy. North Pole, +
slender +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
not arillate +  and stalked +
again +  and undivided +
parted +  and lobed +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
brown-hispid +
oblong +  and elliptic ovate or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
(5-)10-many +
not bulbous-based +
sparsely pilose +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
persistent +
Ranunculus sulphureus var. intercedens +
Ranunculus sulphureus +
Ranunculus sect. Epirotes +
species +
perennial +  and annual +
pubescent +, pilose +, sometimes +  and glabrous +
herbaceous +  and woody +