Difference between revisions of "Lactuca sativa"

Linnaeus

Sp. Pl. 2: 795. 1753.

Introduced
Treatment appears in FNA Volume 19. Treatment on page 263. Mentioned on page 260.
imported>Volume Importer
imported>Volume Importer
 
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|publication year=1753
 
|publication year=1753
 
|special status=Introduced
 
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V19_357.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_357.xml
 
|tribe=Asteraceae tribe Cichorieae
 
|tribe=Asteraceae tribe Cichorieae
 
|genus=Lactuca
 
|genus=Lactuca

Latest revision as of 19:51, 5 November 2020

Annuals or biennials, (15–)30–70(–100+) cm. Leaves on proximal 1/2–3/4 of each stem; blades of undivided cauline leaves ovate to orbiculate, margins entire or denticulate, seldom prickly, midribs rarely prickly-setose. Heads usually in corymbiform, sometimes in paniculiform, arrays. Involucres 8–13+ mm. Phyllaries usually erect in fruit. Florets 7–15(–30+); corollas yellow (sometimes streaked with violet), usually deliquescent. Cypselae: bodies pale grayish to whitish or tan, ± flattened, obovate, 3–4 mm, beaks ± filiform, 3–5 mm, faces 5–9-nerved; pappi white, 3.5–4+ mm. 2n = 18.


Phenology: Flowering mostly Jul–Sep.
Habitat: Disturbed sites, abandoned plantings
Elevation: 10–1000 m

Distribution

V19-357-distribution-map.gif

Introduced; Ont., Ala., Calif., Conn., Del., D.C., Idaho, Ill., Ind., Maine, Mass., Mich., Mo., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., Vt., Wash., W.Va., Eurasia, introduced also in Mexico, introduced or ephemeral nearly worldwide.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Lactuca sativa"
John L. Strother +
Linnaeus +
Ont. +, Ala. +, Calif. +, Conn. +, Del. +, D.C. +, Idaho +, Ill. +, Ind. +, Maine +, Mass. +, Mich. +, Mo. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, Vt. +, Wash. +, W.Va. +, Eurasia +, introduced also in Mexico +  and introduced or ephemeral nearly worldwide. +
10–1000 m +
Disturbed sites, abandoned plantings +
Flowering mostly Jul–Sep. +
Introduced +
Undefined tribe Lactuceae +
Lactuca sativa +
species +