familyPortulacaceae
genusClaytonia
speciesClaytonia megarhiza

Claytonia megarhiza

(A. Gray) Parry ex S. Watson

Smithsonian Misc. Collect 258: 118. 1878.

John M. Miller
Common names: Fell-fields claytonia
Endemic
Basionym: Claytonia arctica var. megarhiza A. Gray Amer. J. Sci. Arts, ser. 2, 33: 406. 1862
Synonyms: Claytonia megarhiza var. bellidifolia (Rydberg) C. L. Hitchcock Claytonia megarhiza var. nivalis (English) C. L. Hitchcock
Treatment appears in FNA Volume 4. Treatment on page 469. Mentioned on page 466.

Plants perennial, with stout, woody caudices; periderm 5–12 mm. Stems 5–25 cm. Leaves: basal leaves sessile, dilated at base into broad, succulent sheath, blade rhombic to oblanceolate, 2–10 × 0.4–2.8 cm, apex obtuse; cauline leaves sessile, blade oblanceolate, 2–10 × 2–5 mm. Inflorescences multibracteate; bracts subtending pedicels, apex obtuse. Flowers 12–20 mm diam; sepals 6–8 mm; petals white, pink, or rose, 5–20 × 3–8 mm; ovules 6. Seeds 2–3 mm diam., shiny and smooth; elaiosome 1 mm or less. 2n = 12, 16, 24, 32, 34, 36.


Phenology: Flowering May–Aug.
Habitat: Talus, scree, gravelly slopes
Elevation: 2000-4000 m

Distribution

V4 933-distribution-map.gif

Alta., B.C., N.W.T., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"less" is not a number.

... more about "Claytonia megarhiza"
RDF feed
2n chromosome quantity
36 +, 34 +, 32 +, 24 +, 16 +  and 12 +
Apex shape
obtuse +
Attachment point arrangement or course or shape
linear +
Author
John M. Miller +
Authority
(A. Gray) Parry ex S. Watson +
Basal leaf architecture
sessile +
Basal leaf quantity
few;several +
Basal leaf shape
dilated +
Basionyms
Claytonia arctica var. megarhiza +
Blade length
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Blade margin architecture or shape
entire +
Blade margin shape
occasionally dentate;crisped +
Blade shape
oblanceolate +  and rhombic +
Blade width
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
Bract architecture or shape
leaflike +
Bract shape
scale-like +
Bract texture
membranous +
Capsule architecture
3-valved +
Capsule dehiscence
dehiscent +
Caudex fragility or size
stout +
Caudex texture
woody +
Cauline leaf architecture
sessile +
Cauline leaf arrangement
whorled +  and opposite +
Cauline leaf fusion
connate +, or +  and distinct +
Cauline leaf quantity
3 (?) +  and 2 (?) +
Common name
Fell-fields claytonia +
Distribution
Alta. +, B.C. +, N.W.T. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
Elaiosome coloration
white +
Elevation
2000-4000 m +
Flower architecture
solitary +
Flower architecture or course
irregular +
Flower architecture or shape
symmetric +
Flower diameter
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flower prominence
showy +
Form quantity
multiple +
Fruit architecture
capsular +
Gynoecium architecture
2-9-carpelled +
Habitat
Talus, scree, gravelly slopes +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Individual quantity
single +
Inflorescence architecture
multibracteate +
Inflorescence arrangement
racemose +
Inflorescence position
terminal +  and axillary +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
spikelike +
Leaf architecture
not articulate +
Leaf architecture or fixation
clasping +
Leaf arrangement
subrosulate +, rosulate +, alternate +, subopposite +  and opposite +
Leaf position
cauline +  and basal +
Margin architecture
hygroscopic +
Margin shape or vernation
involute +
Node pubescence
glabrous +
Number of lower taxa
0 +
Ovary architecture
plurilocular +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
superior +
Ovary quantity
1 +
Ovary shape
globose +
Ovule placentation
1-many +
Ovule quantity
6 +
Periderm some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Petal atypical quantity
1 (2) +
Petal coloration
rose +, pink +  and white +
Petal fusion
connate +  and distinct +
Petal length
5mm;20mm +
Petal presence
absent +
Petal quantity
5 +
Petal width
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Phenology
Flowering May–Aug. +
Publication title
Smithsonian Misc. Collect +
Publication year
1878 +
Reference
None +
Root architecture
branched +
Root shape
capillary +
Root texture
fibrous +
Seed architecture or pubescence or relief
smooth +
Seed atypical quantity
1 (3) +
Seed coloration
black +
Seed density
dispersed +
Seed diameter
2mm;3mm +
Seed quantity
3 +  and 6 +
Seed reflectance
shiny +
Seed relief
smooth +  and tuberculate +
Seed shape
rounded +
Sepal architecture or shape
leaflike +
Sepal duration
persistent +
Sepal quantity
2;9 +
Sepal size
unequal +
Sepal some measurement
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Sheath texture
succulent +
Sheath width
broad +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V4/V4 933.xml +
Special status
Endemic +
Stamen arrangement
opposite +
Stamen fusion
adnate +
Stamen quantity
5 +
Stem location
aerial +
Stem orientation
decumbent +  and erect +
Stem some measurement
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Stems tuber location
subterranean +
Stigma quantity
3 +
Style architecture
branched +
Style presence
absent +
Style quantity
1 +
Synonyms
Claytonia megarhiza var. bellidifolia +  and Claytonia megarhiza var. nivalis +
Taxon family
Portulacaceae +
Taxon name
Claytonia megarhiza +
Taxon parent
Claytonia +
Taxon rank
species +
Valve duration
not deciduous +
Volume
Volume 4 +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism texture
fleshy +  and succulent +
X chromosome quantity
8 +, 7 +, 6 +  and 5 +