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

Ranunculus hydrocharoides

A. Gray

Mem. Amer. Acad. Arts, ser. 2, 5: 306. 1855.

Alan T. Whittemore
Synonyms: Ranunculus hydrocharoides var. stolonifer (Hemsley) L. D. Benson
Treatment appears in FNA Volume 3.

Stems erect to prostrate, usually rooting nodally, glabrous or strigose. Roots not thickened basally, glabrous. Proximal cauline leaf-blades ovate to broadly ovate, 0.8-2.7 × 0.8-1.9 cm, base rounded to weakly cordate, margins entire or dentate, apex rounded or obtuse. Inflorescences: bracts lanceolate to oblanceolate or sometimes ovate. Flowers: receptacle glabrous; sepals 5, spreading or reflexed from base, 1.5-3 × 1-2 mm, glabrous; petals 5-6, 3-5 × 1-2 mm; nectary scales glabrous. Heads of achenes hemispheric or globose, 2-4 × 3-4 mm; achenes 1.2-1.4 × 1-1.2 mm, glabrous; beak lanceolate to lance-filiform, straight or curved, 0.4-1 mm.


Phenology: Flowering late spring–summer (Jun–Aug).
Habitat: Wet soil or shallow water, in marshes and edges of streams and lakes
Elevation: 2000-2900 m

Distribution

V3 981-distribution-map.gif

Ariz., Calif., N.Mex., Mexico, Central America (in Guatemala)

Discussion

Selected References

None.

Lower Taxa

None.
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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
0.12 cm1.2 mm <br />0.0012 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
Achene pubescence
glabrous +
Achene wall architecture or pubescence or relief
smooth +
Achene wall relief
not ornamented +
Achene wall width
thick +
Achene width
1mm;1.2mm +
Anther dehiscence
dehiscing +
Apex shape
obtuse +  and rounded +
Author
Alan T. Whittemore +
Authority
A. Gray +
Base shape
rounded +  and weakly cordate +
Basionyms
Ranunculus subg. Flammula +
Beak course
curved +  and straight +
Beak height or length or size
much shorter +
Beak position or structure subtype
terminal +
Beak presence
absent +
Beak shape
lanceolate +  and lance-filiform +
Beak some measurement
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Blade architecture or shape
undivided +
Bract architecture or shape
leaflike +
Bract presence
absent +
Bract shape
ovate;lanceolate;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
Ariz. +, Calif. +, N.Mex. +, Mexico +  and Central America (in Guatemala) +
Elevation
2000-2900 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
Wet soil or shallow water, in marshes and edges of streams and lakes +
Head length
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Head shape
globose;hemispheric +
Head width
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 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 architecture or shape
dentate +  and entire +
Margin fusion
free +
Margin shape
lobed;entire;toothed;entire +
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
3mm;5mm +
Petal prominence
conspicuous +
Petal quantity
5;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 spring–summer (Jun–Aug). +
Pistil architecture
simple +
Pistil quantity
4 +  and 250 +
Proximal cauline leaf-blade length
0.8 cm8 mm <br />0.008 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Proximal cauline leaf-blade shape
Ovate (Broadly ovate) +
Proximal cauline leaf-blade width
0.8 cm8 mm <br />0.008 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
Proximal cauline leaf architecture
petiolate +
Publication title
Mem. Amer. Acad. Arts, ser. +
Publication year
1855 +
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
? (?) +
Sepal orientation
reflexed +  and spreading +
Sepal pubescence
glabrous +
Sepal quantity
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
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 981.xml +
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
erect +  and prostrate +
Stem pubescence
strigose +  and glabrous +
Stipule presence
absent +
Stolon architecture
tuberous +
Style duration
persistent +
Style presence
absent +
Synonyms
Ranunculus hydrocharoides var. stolonifer +
Taxon family
Ranunculaceae +
Taxon name
Ranunculus hydrocharoides +
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 +