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
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Similar to Common Horseweed but with a purplish tip to each flowerhead bract, and much less hairy. Read more at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Conyza canadensis var. pusilla
FAMILY
Asteraceae
INCLUDED WITHIN Flora of North America
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.
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JK Marlow jkm190604_8928
June Greenville County SC
Tall Pines Wildlife Management Area
Note the cilia at leaf bases.
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JK Marlow jkm220722_9269
July Greenville County SC
Tall Pines Wildlife Management Area
E. pusillus on the left, E. canadensis on the right.
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JK Marlow jkm150822_822
August Pickens County SC
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JK Marlow jkm150822_824
August Pickens County SC
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JK Marlow jkm150822_869
August Pickens County SC
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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.
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JK Marlow jkm210812_2631
August Transylvania County NC
DuPont State Forest
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JK Marlow jkm210812_2633
August Transylvania County NC
DuPont State Forest
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JK Marlow jkm150912_161
September Pickens County SC
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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).
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JK Marlow jkm150912_169
September Pickens County SC
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JK Marlow jkm150912_169b
September Pickens County SC
Phyllaries purple-tipped, per Weakley's Flora (2015).
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Terry Holdsclaw tdh_c_canadensis_pusil_37
September Lincoln County NC
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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).
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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
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
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
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
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
Disc flowers bisexual & fertile/ Ray flowers pistillate & fertile
Inferior ovary
FRUIT:
Spring/Summer/Fall
Yellowish
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005) p042?
- Newcomb's Wildflower Guide (Newcomb, 1977) p384?
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p084
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p069
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p335?
- Wildflowers of the Southern Mountains (Smith, 1998) p215?