Ranunculus arvensis

Linnaeus

Sp. Pl. 1: 555. 1753.

Introduced
Synonyms: Ranunculus arvensis var. tuberculatus de Candolle
Treatment appears in FNA Volume 3.
Revision as of 07:41, 30 July 2020 by imported>Volume Importer
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Stems erect or ascending, sparsely pilose. Basal and lower cauline leaf-blades obovate to rhombic in outline, 3-parted or 3 (-5) -foliolate, 1.8-5.2 × 1.6-4.2 cm, leaflets oblanceolate or divided into oblanceolate or linear segments, leaflet base narrowly acuminate, margins entire or distally dentate, apex rounded or acuminate. Flowers pedicellate; receptacle sparsely hispid; sepals 5, spreading, 4-7 × 1-2 mm, strigose; petals 5, 5-8 × 2-4 mm. Heads of achenes discoid, 8-9 mm across; achenes 5-8 per head, 4-6.4 × 2.8-4.4 mm, faces and margin covered with long spines, glabrous; beak lance-subulate, straight, 1.6-3.8 mm.


Phenology: Flowering spring (Mar–Jun).
Habitat: Grasslands, ephemeral pools, disturbed areas
Elevation: 0-1200 m

Distribution

V3 78-distribution-map.gif

Introduced; Ark., Calif., D.C., Ga., Idaho, Ill., Kans., La., Miss., Mo., N.J., N.Y., N.C., Oreg., Pa., S.C., Tenn., Utah, Wash., South America, native to Eurasia, Pacific Islands, Australia

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus arvensis"
not prolonged +
3-7 times as wide as thick +
0.4 cm4 mm <br />0.004 m <br /> (0.64 cm6.4 mm <br />0.0064 m <br />) +
2.8mm;4.4mm +
acuminate +  and rounded +
Alan T. Whittemore +
Linnaeus +
3(-5)-foliolate +
1.8 cm18 mm <br />0.018 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
acuminate +, divided +, oblanceolate +  and 3-parted +
1.6cm;4.2cm +
straight +
lance-subulate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
large +  and small +
globose;cylindric +
2-16-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Ark. +, Calif. +, D.C. +, Ga. +, Idaho +, Ill. +, Kans. +, La. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Oreg. +, Pa. +, S.C. +, Tenn. +, Utah +, Wash. +, South America +, native to Eurasia +, Pacific Islands +  and Australia +
0-1200 m +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Grasslands, ephemeral pools, disturbed areas +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
axillary +  and terminal +
reniform +  and linear +
petiolate +, compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
parted +  and lobed +
3(-5)-foliolate +
1.8 cm18 mm <br />0.018 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
acuminate +, divided +, oblanceolate +  and 3-parted +
1.6 cm16 mm <br />0.016 m <br /> (4.2 cm42 mm <br />0.042 m <br />) +
3(-5)-foliolate +
1.8 cm18 mm <br />0.018 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
acuminate;divided;oblanceolate;3-parted +
1.6cm;4.2cm +
distinct +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering spring (Mar–Jun). +
4 +  and 250 +
not arillate +  and stalked +
linear +  and oblanceolate +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
oblong +  and elliptic ovate or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
W2 +  and Introduced +
(5-)10-many +
not bulbous-based +
ascending +  and erect +
persistent +
Ranunculus arvensis var. tuberculatus +
Ranunculus arvensis +
Ranunculus sect. Echinella +
species +
perennial +  and annual +
glabrous +  and pubescent +
herbaceous +  and woody +