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 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.
JK Marlow jkm190604_8928
June Greenville County SC
Tall Pines Wildlife Management Area
Note the cilia at leaf bases.
JK Marlow jkm220722_9269
July Greenville County SC
Tall Pines Wildlife Management Area
E. pusillus on the left, E. canadensis on the right.
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.
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).
JK Marlow jkm150912_169b
September Pickens County SC
Phyllaries purple-tipped, per Weakley's Flora (2015).
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).
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
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
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