Difference between revisions of "Lactuca canadensis"
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==Description== <!-- Basic life history facts such as annual/perrenial, monoecious/dioecious, root morphology, seed type, etc. --> | ==Description== <!-- Basic life history facts such as annual/perrenial, monoecious/dioecious, root morphology, seed type, etc. --> | ||
| − | ''Lactuca canadensis'' is a dioecious annual and biennial that grows as a forb/herb.<ref name="USDA"/> | + | ''Lactuca canadensis'' is a dioecious annual and biennial that grows as a forb/herb.<ref name="USDA"/> Its inflorescence consist of a cluster of small pale yellow flowers. When crushed, its foliage excretes a milky juice. Leaves are alternate, simple, with lobed margins. It is relatively short, reaching heights of 0-1 ft (0.0-0.3 m).<ref name="Ladybird">Plant database: ''Lactuca canadensis''. (30 January 2018) Lady Bird Johnson Wildflower Center. URL: https://www.wildflower.org/plants/result.php?id_plant=LACA</ref> |
==Distribution== | ==Distribution== | ||
Revision as of 13:46, 30 January 2018
| Lactuca canadensis | |
|---|---|
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| Photo by the Illinois Wildflowers Database | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Magnoliopsida - Dicots |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Lactuca |
| Species: | L. canadensis |
| Binomial name | |
| Lactuca canadensis L. | |
| |
| Natural range of Lactuca canadensis from USDA NRCS Plants Database. | |
Common Name: American wild lettuce;[1] Canada lettuce[2]
Contents
Taxonomic Notes
Synonym: L. sagittifolia;[1][2] L. steelei[2]
Description
Lactuca canadensis is a dioecious annual and biennial that grows as a forb/herb.[2] Its inflorescence consist of a cluster of small pale yellow flowers. When crushed, its foliage excretes a milky juice. Leaves are alternate, simple, with lobed margins. It is relatively short, reaching heights of 0-1 ft (0.0-0.3 m).[3]
Distribution
This species occurs in all of the lower 48 United States excluding Nevada and Arizona. In Canada, it is found in all the provinces except Saskatchewan, Nunavut, and Northwest Territories.[2]
Ecology
Habitat
L. canadensis is found in fields, roadsides, and disturbed ground.[1]
Phenology
In the southeastern and mid-Atlantic United States, this species flowers from June through November.[1]
Conservation and Management
Cultivation and restoration
Photo Gallery
References and notes
- ↑ 1.0 1.1 1.2 1.3 Weakley AS (2015) Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC: University of North Carolina Herbarium.
- ↑ 2.0 2.1 2.2 2.3 2.4 USDA NRCS (2016) The PLANTS Database (http://plants.usda.gov, 30 January 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- ↑ Plant database: Lactuca canadensis. (30 January 2018) Lady Bird Johnson Wildflower Center. URL: https://www.wildflower.org/plants/result.php?id_plant=LACA
