Krigia dandelion

(Linnaeus) Nuttall

Gen. N. Amer. Pl. 2: 127. 1818.

Common names: Potato dwarfdandelion or dandelion
Endemic
Basionym: Leontodon dandelion Linnaeus Sp. Pl. 2: 798. 1753
Synonyms: Cynthia dandelion (Linnaeus) de Candolle
Treatment appears in FNA Volume 19. Treatment on page 364. Mentioned on page 362, 363.

Perennials, 10–50 cm; rhizomes relatively slender, fibrous-rooted, tubers overwintering, globose, 5–15 mm diam., caudices fibrous-rooted. Stems scapiform, erect, leafless and ebracteate, glabrous or minutely glandular-villous especially proximal to heads. Leaves basal; petioles usually broadly or narrowly winged; blades linear to lanceolate or oblanceolate, 6–24 cm, margins entire or remotely toothed to pinnately lobed, lobes usually entire and acute, apices acute to obtuse, faces usually glabrous, sometimes sparingly villous (glandular or eglandular, often glaucous). Heads borne singly. Peduncles from basal rosettes. Involucres 10–15 mm. Phyllaries 12–16, reflexed in fruit, linear-lanceolate, midveins obscure, apices acute. Florets 25–34; corollas yellow to yellow-orange, abaxially often purplish-tinged, 15–25 mm. Cypselae reddish-brown, columnar, 2.5 mm, 10–15-ribbed; pappi of ca. 10, outer scales 0.5–1 mm plus 25–45, barbellulate inner bristles 5–8 mm. 2n = 60.


Phenology: Flowering Apr–Jun.
Habitat: Sandy or clay-loam soils, open mixed mesophytic and oak-hickory woods, fields, pastures, roadsides
Elevation: 10–500 m

Distribution

V19-578-distribution-map.gif

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

Discussion

Krigia dandelion is known from the Eastern deciduous forest biome and tallgrass prairies. It is unique in propagating extensively by means of tubers. These were well described by T. Holm (1891). All chromosome counts to date have shown 2n = 60, the duodecaploid number based on x = 5.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Krigia dandelion"
reduced +
scarious +
ovate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Kenton L. Chambers +  and Robert J. O’Kennon +
(Linnaeus) Nuttall +
decurrent +
Leontodon dandelion +
compound +  and simple +
linear;lanceolate or oblanceolate +
6 cm60 mm <br />0.06 m <br /> (24 cm240 mm <br />0.24 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
filiform +
fibrous-rooted +
Potato dwarfdandelion or dandelion +
zygomorphic +, actinomorphic +  and (3-)5-merous +
purplish-tinged +, yellow +  and yellow-orange +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
reddish-brown +
Ala. +, Ark. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.J. +, N.C. +, Ohio +, Okla. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
10–500 m +
villous +  and glabrous +
winged +  and beaked +
dispersed +
Sandy or clay-loam soils, open mixed mesophytic and oak-hickory woods, fields, pastures, roadsides +
indeterminate +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
turbinate;campanulate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
remotely toothed +  and pinnately lobed +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
2-carpellate +
persistent +
25 +  and 45 +
Flowering Apr–Jun. +
connate +  and distinct +
12 +  and 16 +
subequal +  and unequal +
Gen. N. Amer. Pl. +
low-convex;flat +
fibrous-rooted +
10 +  and 20 +
brownish;yellowish +
exalbuminous +
ebracteate +  and leafless +
1 +  and 50 +
scapiform +
appendaged +  and truncate +
papillate +
Cynthia dandelion +
Krigia dandelion +
species +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
overwintering +
globose +
taprooted +  and fibrous-rooted +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
shrub +  and subshrub +
9] +, [6 +  and 5 +