Conyza ramosissima

Classification	Dicots
Family	Asteraceae
Family (Traditional)	Asteraceae
Genus	Conyza
Species:	Conyza ramosissima Cronquist
Common Name	Dwarf Horseweed
Growth Habit	forb
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Annual; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Xeric; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Region of Origin: North America; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaf Venation: pinnate; Leaflet Margins: ciliate; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Purple; Base Flower Color: Yellow; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Cypsela; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: corymb/cyme/umbel; Inflorescence Types: head; Inflorescence Types: solitary; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Ovules per Carpel: 1; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value	0
Status	Native; TN[SNR] KY[S5] (State Rank); G5 (Global Rank)
Specimen(s)	View and Download Specimen Details »

** Not applicable or data not available.

View More Photos »

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

State Boundaries
Counties
Counties - Species Present

Ecoregions

Southeastern Plains
- Blackland Prarie
Blue Ridge Mountains
Ridge and Valley
Cumberland Plateau
Cumberland Mountains
Allegheny Plateau

Interior Plateau
- Bluegrass Region
- Nashville Basin
- Pennyroyal Karst Plain
- Western Highland Rim
- Eastern Highland Rim

Interior River Valleys and Hills
- Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Show/Hide Ecoregions
Show/Hide Ecoregion Labels

Synonyms

Synonym	Full Citation
Erigeron divaricatus	Erigeron divaricatus Michx.
Leptilon divaricatum	Leptilon divaricatum Raf.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Butler (KY), Christian (KY), Simpson (KY), Bledsoe (TN), Carroll (TN), Cumberland (TN), DeKalb (TN), Franklin (TN), Haywood (TN), Lake (TN), Marion (TN), Maury (TN), Montgomery (TN), Obion (TN), Putnam (TN), Robertson (TN), Rutherford (TN), Stewart (TN), White (TN), Wilson (TN)

Herbaria represented by specimen data listed below: APSC, EKY, HTTU, MTSU, TENN, UCHT

Range of years during which specimens were collected: 1897 - 2017

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
TENN-V-0223886	DeKalb	Tennessee			TENN Erigeron divaricatus
TENN-V-0223893	Wilson	Tennessee			TENN Erigeron divaricatus
TENN-V-0223888	Maury	Tennessee			TENN Erigeron divaricatus
TENN-V-0223887	Lake	Tennessee			TENN Erigeron divaricatus
TENN-V-0210345	Robertson	Tennessee		A. Gattinger	TENN Erigeron divaricatus
TENN-V-0223889	Montgomery	Tennessee			TENN Erigeron divaricatus
TENN-V-0223891	Rutherford	Tennessee			TENN Erigeron divaricatus
TENN-V-0223884	Bledsoe	Tennessee			TENN Erigeron divaricatus
TENN-V-0223890	Obion	Tennessee			TENN Erigeron divaricatus
TENN-V-0223892	Rutherford	Tennessee			TENN Erigeron divaricatus
TENN-V-0223885	Cumberland	Tennessee			TENN Erigeron divaricatus
N/A	Franklin	Tennessee	10 Sep 1898	H. Eggert	UCHT Erigeron divaricatus
N/A	Franklin	Tennessee	07 Jun 1897	H. Eggert	UCHT Erigeron divaricatus
N/A	Carroll	Tennessee		H. Eggert	UCHT Erigeron divaricatus
N/A	Carroll	Tennessee	05 Aug 1897	H. Eggert	UCHT Erigeron divaricatus
N/A	Robertson	Tennessee		A. Gattinger	UCHT Erigeron divaricatus
ucht028732	Marion	Tennessee			UCHT Conyza ramosissima
APSC0026960	Montgomery	Tennessee			APSC Erigeron divaricatus
APSC0092967	Simpson	Kentucky	15 Jul 2017	Mason Brock	APSC Erigeron divaricatus
APSC0026946	Haywood	Tennessee			APSC Erigeron divaricatus
HTTU029760	Putnam	Tennessee			HTTU Conyza ramosissima
HTTU029759	Putnam	Tennessee			HTTU Conyza ramosissima
APSC0026934	Stewart	Tennessee			APSC Erigeron divaricatus
APSC0026959	Montgomery	Tennessee			APSC Erigeron divaricatus
APSC0026958	Christian	Kentucky	22 Jun 1994	Edward Chester	APSC Erigeron divaricatus
HTTU036525	Putnam	Tennessee			HTTU Conyza ramosissima
HTTU036141	White	Tennessee			HTTU Conyza ramosissima
HTTU036340	Putnam	Tennessee			HTTU Conyza ramosissima
HTTU029758	Putnam	Tennessee			HTTU Conyza ramosissima
N/A	Carroll	Tennessee		H. Eggert	UCHT Erigeron divaricatus
N/A	Robertson	Tennessee		A. Gattinger	UCHT Erigeron divaricatus
31234100232287	Butler	Kentucky	11 Sep 1992	Landon E. McKinney 5275	EKY Conyza ramosissima
31234100232295		Tennessee	21 May 1907	H. Garman s.n.	EKY Conyza ramosissima
MTSU021738	Rutherford	Tennessee	01 Jun 1953	E. Rucker	MTSU Erigeron divaricatus

View a List of All Ecological Communities

Conyza ramosissima

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos