OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Erigeron pusillus   FAMILY Asteraceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Conyza canadensis var. pusilla   FAMILY Asteraceae

INCLUDED WITHIN Flora of North America north of Mexico, vol. 19-20-21 (2006)

Conyza canadensis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-44-008b:

Erigeron canadensis var. pusillus   FAMILY Asteraceae

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)

Conyza canadensis var. pusilla

SYNONYMOUS WITH Gray's Manual of Botany (Fernald, 1950)

Erigeron pusillus

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Leptilon pusillum

 

COMMON NAME:
Southern Horseweed


         To see larger pictures, click or hover over the thumbnails.

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm190604_8928

June    Greenville County    SC

Tall Pines Wildlife Management Area

Note the cilia at leaf bases.

image of Erigeron pusillus, Southern Horseweed

Alan S. Weakley    asw_10231861435894874

July    Georgetown County?    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm220722_9269

July    Greenville County    SC

Tall Pines Wildlife Management Area

E. pusillus on the left, E. canadensis on the right.

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150822_822

August    Pickens County    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150822_824

August    Pickens County    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150822_869

August    Pickens County    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150822_869b

August    Pickens County    SC

Stem glabrous or widely scattered appressed hairs; lvs w a few cilia near base, per Weakley's Flora.

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm210812_2631

August    Transylvania County    NC

DuPont State Forest

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm210812_2633

August    Transylvania County    NC

DuPont State Forest

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150912_161

September    Pickens County    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150912_163

September    Pickens County    SC

The involucre is 1/8" high, and the whitish rays are narrow, short and erect, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150912_169

September    Pickens County    SC

image of Erigeron pusillus, Southern Horseweed

JK Marlow    jkm150912_169b

September    Pickens County    SC

Phyllaries purple-tipped, per Weakley's Flora (2015).

image of Erigeron pusillus, Southern Horseweed

Terry Holdsclaw    tdh_c_canadensis_pusil_37

September    Lincoln County    NC

image of Erigeron pusillus, Southern Horseweed

Terry Holdsclaw    tdh_c_canadensis_pusil_1

October    Iredell County    NC

The inflorescence is a large open panicle bearing a great many small heads, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Erigeron pusillus, Southern Horseweed

Terry Holdsclaw    tdh_c_canadensis_pusil_41

October    Iredell County    NC

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Erigeron pusillus   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Conyza canadensis var. pusilla   FAMILY Asteraceae

INCLUDED WITHIN Flora of North America north of Mexico, vol. 19-20-21
Conyza canadensis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-44-008b:
Erigeron canadensis var. pusillus   FAMILY Asteraceae

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Conyza canadensis var. pusilla

SYNONYMOUS WITH Gray's Manual of Botany (Fernald, 1950)
Erigeron pusillus

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Leptilon pusillum

 

Find by SCIENTIFIC NAME:

3093

Forb
Annual

Habitat: dunes, brackish marsh edges, coastal sand flats, sand prairies, old fields, disturbed areas, barrens and glades, per Weakley's Flora

Native to the Carolinas & Georgia

Common

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Alternate (basal leaves usually absent or withered at flowering)

FLOWER:
Spring/Summer/Fall
Rays: White/Lavender (few, 1-2mm long)
Disc: Yellow/Yellowish
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers pistillate & fertile

FRUIT:
Spring/Summer/Fall
Yellowish
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



 


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