Ranunculus testiculatus

Crantz

Stirp. Austr. Fasc. 2: 97. 1763.

IllustratedIntroduced
Synonyms: Ceratocephalus orthoceras de Candolle Ceratocephalus testiculatus (Crantz) Roth
Treatment appears in FNA Volume 3.

Stems erect or ascending, not rooting nodally, villous, not bulbous-based. Tuberous roots absent. Basal leaf-blades broadly spatulate in outline, 1-2×-dissected, 0.9-3.8 × 0.5-1.5 cm, segments linear, margins entire, apex obtuse to acuminate. Flowers: receptacle glabrous; sepals spreading, 3-6 × 1-2 mm, villous; petals yellow, 3-5 × 1-3 mm. Heads of achenes cylindric, 9-16 (-27) × 8-10 mm; achenes 1.6-2 × 1.8-2 mm, tomentose; beak persistent, lanceolate, 3.5-4.5 mm.


Phenology: Flowering spring (Apr–May).
Habitat: Disturbed areas, especially in grassland
Elevation: 400-2500 m

Distribution

V3 762-distribution-map.gif

Introduced; B.C., Sask., Ariz., Calif., Colo., Idaho, Iowa, Kans., Minn., Mo., Mont., Nebr., Nev., N.Mex., N.Dak., Ohio, Oreg., S.Dak., Utah, Wash., Wyo., native to Eurasia

Discussion

In North America, Ranunculus testiculatus seems to be expanding its range rapidly in arid and semiarid areas. A second species of this subgenus, R. falcatus Linnaeus [Ceratocephala falcata (Linnaeus) Persoon], has been reported from North America, but all reports seem to be based on misidentified material of R. testiculatus.

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus testiculatus"
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.8mm;2mm +
obtuse +  and acuminate +
Alan T. Whittemore +
Crantz +
cuneate +, truncate +  and cordate +
Undefined subg. Ceratocephalus +
curved +  and straight +
persistent +
lanceolate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
1-2×-dissected +
large +  and small +
globose;cylindric +
2-50-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Iowa +, Kans. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Ohio +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wyo. +  and native to Eurasia +
400-2500 m +
sessile +  and pedicellate +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Disturbed areas, especially in grassland +
1.6 cm16 mm <br />0.016 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
cylindric +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
axillary +  and terminal +
reniform +  and linear +
whorled +, opposite +  and alternate +
cauline +  and basal +
parted +  and lobed +
palmate +  and pinnate +
toothed;crenate;toothed;crenate;entire +
distinct +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering spring (Apr–May). +
4 +  and 250 +
Stirp. Austr. Fasc. +
not arillate +  and stalked +
white;yellow;white;yellow;purple;sometimes;green +
persistent +
distinct +
3 +  and 6 +
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 +, Illustrated +  and Introduced +
(5-)10-many +
not bulbous-based +  and rooting +
ascending +  and erect +
persistent +
Ceratocephalus orthoceras +  and Ceratocephalus testiculatus +
Ranunculus testiculatus +
Ranunculus subg. Ceratocephala +
species +
perennial +  and annual +
herbaceous +  and woody +