Biology:Conyza ramosissima
| Conyza ramosissima | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Conyza |
| Species: | C. ramosissima
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| Binomial name | |
| Conyza ramosissima Cronquist
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| Synonyms[2] | |
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Conyza ramosissima, the dwarf horseweed,[3] is a species of North American plants in the family Asteraceae. It is widespread and common across the central part of the United States , its range extending from New Mexico east to Alabama and north as far as Pennsylvania, Ontario, and North Dakota.[4]
The oldest name for the species is Erigeron divaricatus, coined in 1803[5] and still used by some sources.[4] Moving the species to Conyza required a change in epithet to avoid a conflict with the name Conyza divaricata Spreng., used for a South American plant in 1826.[6] Hence the new name Conyza ramosissima.[7]
Conyza ramosissima is a much-branching annual herb sometimes growing to a height of 25 cm (10 inches) or more. Its leaves are small and thread-like. It has numerous small flower heads, each with white or lavender ray florets and yellow disc florets. The plant is most often found in disturbed sites such as fields, roadsides, etc.[8]
References
- ↑ "NatureServe Explorer 2.0". https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.153843/Conyza_ramosissima.
- ↑ The Plant List, Conyza ramosissima Cronquist
- ↑ "Conyza ramosissima". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=CORA4. Retrieved 21 June 2015.
- ↑ 4.0 4.1 Biota of North America Program 2014 county distribution map, Erigeron divaricatus
- ↑ Michaux, André 1803. Flora Boreali-Americana 2: 123 in Latin
- ↑ Sprengel, Curt Polycarp Joachim. 1826. Systema Vegetabilium, editio decima sexta 3: 508 in Latin
- ↑ Cronquist, Arthur John 1943. Bulletin of the Torrey Botanical Club 70(6): 632
- ↑ Flora of North America, Conyza ramosissima Cronquist
Wikidata ☰ Q15550135 entry
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