familyRanunculaceae
genusRanunculus
subgenusRanunculus subg. Ranunculus
sectionRanunculus sect. Flammula
speciesRanunculus laxicaulis

Ranunculus laxicaulis

Darby

Man. Bot. 2: 4. 1841.

Alan T. Whittemore
Endemic
Synonyms: Ranunculus mississippiensis Small Ranunculus subcordatus E. O. Beal Ranunculus texensis Engelmann ex Engelmann & A. Gray
Treatment appears in FNA Volume 3.

Stems erect or ascending, often rooting at proximal nodes, glabrous or sparsely pilose. Roots not thickened basally, glabrous. Proximal cauline leaf-blades ovate to lanceolate or narrowly elliptic, 1.5-5.7 × 0.4-2.4 cm, base cordate to acute, margins finely denticulate or entire, apex broadly rounded to acuminate. Inflorescences: bracts linear to lanceolate or oblanceolate. Flowers: receptacle glabrous; sepals 4-5, spreading or reflexed from base, 2-3 × 1.5-3 mm, glabrous or pubescent; petals 4-6, 2-6 × 1-2 mm; nectary scales glabrous. Heads of achenes hemispheric to ovoid, 2-4 × 2-3 mm; achenes 0.8-1 × 0.8 mm, glabrous; beak deciduous, leaving stump 0.1-0.2 mm.


Phenology: Flowering late winter–summer (Mar–Jul).
Habitat: Around ponds and ditches, in meadows, roadsides, and open woods
Elevation: 0-100 m

Distribution

V3 680-distribution-map.gif

Ala., Ark., Del., Ga., Ill., Ind., Kans., Ky., La., Md., Miss., Mo., N.J., N.C., Okla., S.C., Tenn., Tex., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus laxicaulis"
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Achene body length
not prolonged +
Achene body shape
globose-lenticular +  and globose +
Achene body width or width
1-2 times as wide as thick +
Achene length
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Achene pubescence
glabrous +
Achene wall architecture or pubescence or relief
smooth +
Achene wall relief
not ornamented +
Achene wall width
thick +
Achene width
0.8 +
Anther dehiscence
dehiscing +
Apex shape
broadly rounded +  and acuminate +
Author
Alan T. Whittemore +
Authority
Darby +
Base shape
cordate +  and acute +
Basionyms
Ranunculus subg. Flammula +
Beak course
curved +  and straight +
Beak duration
deciduous +
Beak height or length or size
much shorter +
Beak position or structure subtype
terminal +
Beak presence
absent +
Beak some measurement
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Blade architecture or shape
undivided +
Bract architecture or shape
leaflike +
Bract presence
absent +
Bract shape
linear;lanceolate or oblanceolate +
Bract size
large +  and small +
Bracteole architecture
sepaloid +
Bracteole presence
absent +
Capsule arrangement
aggregated +
Capsule shape
globose;cylindric +
Caudex architecture
tuberous +
Cauline leaf arrangement
alternate +
Cyme architecture
1-15(-40)-flowered +
Cyme some measurement
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Distal cauline leaf architecture
simple +
Distal cauline leaf shape
unlobed +
Distal leaf architecture
sessile +
Distribution
Ala. +, Ark. +, Del. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.J. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +  and Va. +
Elevation
0-100 m +
Embryo size
small +
Endosperm quantity
abundant +
Filament shape
filiform +
Flap fusion
free +
Flap height or length or size
shorter +
Flower architecture
pedicellate +
Flower architecture or arrangement or growth form
solitary +
Flower architecture or shape
symmetric +
Flower prominence
showy +  and inconspicuous +
Flower reproduction
bisexual +
Fruit atypical quantity
5 (6) +
Fruit quantity
3;5 +
Fruits achene architecture
sessile +  and aggregate +
Fruits achene architecture or structure in adjective form
1-locular +
Fruits achene shape
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Habitat
Around ponds and ditches, in meadows, roadsides, and open woods +
Head length
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Head shape
hemispheric;ovoid +
Head width
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Inflorescence position
axillary +  and terminal +
Leaf-blade architecture
compound +
Leaf-blade architecture or shape
undivided +
Leaf-blade shape
reniform +  and linear +
Leaf architecture
petiolate +, compound +  and simple +
Leaf arrangement
whorled +, opposite +  and alternate +
Leaf position
cauline +, all +  and basal +
Leaf shape
parted +  and lobed +
Margin architecture
palmate +  and pinnate +
Margin fusion
free +
Margin shape
entire;denticulate +
Nectary presence
absent +
Nectary scale fixation
attached +
Nectary scale height or length or size
shorter +
Nectary scale orientation
projecting +
Nectary scale pubescence
glabrous +
Number of lower taxa
0 +
Ovule quantity
1 +
Perianth position
hypogynous +
Petal atypical quantity
22 (150) +
Petal coloration
yellow +
Petal fusion
distinct +
Petal length
2mm;6mm +
Petal prominence
conspicuous +
Petal quantity
4;6 +
Petal shape
linear +  and orbiculate +
Petal size
reduced +
Petal some measurement
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Petal width
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Petiole architecture or shape
sheathing +
Petiole presence
absent +
Phenology
Flowering late winter–summer (Mar–Jul). +
Pistil architecture
simple +
Pistil quantity
4 +  and 250 +
Proximal cauline leaf-blade length
1.5 cm15 mm <br />0.015 m <br /> (5.7 cm57 mm <br />0.057 m <br />) +
Proximal cauline leaf-blade shape
Ovate (Lanceolate or narrowly elliptic) +
Proximal cauline leaf-blade width
0.4 cm4 mm <br />0.004 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Proximal cauline leaf architecture
petiolate +
Publication title
Man. Bot. +
Publication year
1841 +
Receptacle pubescence
glabrous +
Reference
None +
Rhizome architecture
tuberous +
Ridge position
low +
Ridge size or width
narrow +
Root architecture
tuberous +
Root position
nodal +  and basal +
Root pubescence
glabrous +
Root size or width
thickened +
Seed architecture
not arillate +  and stalked +
Seed quantity
1;many +
Sepal architecture
petaloid +
Sepal architecture or shape
spurred +
Sepal arrangement
imbricate +
Sepal atypical quantity
6 (20) +
Sepal coloration
white;yellow;white;yellow;purple;sometimes;green +
Sepal duration
deciduous +
Sepal fusion
distinct +
Sepal length
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Sepal orientation
reflexed +  and spreading +
Sepal pubescence
pubescent +  and glabrous +
Sepal quantity
4 +  and 5 +
Sepal shape
oblong +  and elliptic ovate or lanceolate +
Sepal some measurement
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Sepal width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Side architecture
veined +
Side quantity
3 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V3/V3 680.xml +
Special status
Endemic +
Stamen fusion
distinct +
Stamen quantity
(5-)10-many +
Staminode presence
absent +
Stem-base architecture
bulbous +
Stem architecture
rooting +
Stem growth form or orientation
prostrate +  and decumbent +
Stem orientation
ascending +  and erect +
Stem pubescence
pilose +  and glabrous +
Stipule presence
absent +
Stolon architecture
tuberous +
Style duration
persistent +
Style presence
absent +
Synonyms
Ranunculus mississippiensis +, Ranunculus subcordatus +  and Ranunculus texensis +
Taxon family
Ranunculaceae +
Taxon name
Ranunculus laxicaulis +
Taxon parent
Ranunculus sect. Flammula +
Taxon rank
species +
Volume
Volume 3 +
Whole organism architecture
rhizomatous +
Whole organism duration
perennial +  and annual +
Whole organism growth form
plant +
Whole organism position
low +
Whole organism pubescence
pilose +  and glabrous +
Whole organism texture
herbaceous +  and woody +
X chromosome quantity
8 +  and 7 +