Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Northern Horsebalm at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
WEAKLEY'S FLORA (11/30/12):
Collinsonia canadensis
FAMILY
Lamiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Collinsonia canadensis
FAMILY
Lamiaceae
INCLUDED WITHIN
A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia canadensis
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-33-001:
Collinsonia canadensis
FAMILY
Lamiaceae
COMMON NAME:
Northern Horsebalm, Citronella, Canada Stoneroot, Canada Horsebalm
Click or hover over the thumbnails to see larger pictures.
JK Marlow jkm200415_3905
April Greenville County SC
Upper leaf surface is hairless to sparsely short-pubescent, per www.illinoiswildflowers.info.
JK Marlow jkm200415_3906
April Greenville County SC
Leaves 2-6" long, usually ovate in shape, margins coarsely serrate-crenate, per www.illinoiswildflowers.info.
Gill Newberry gn08_c_canadensis
August
3 or more pairs of oval leaves, spaced rather evenly along the stem, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
JK Marlow jkm0509k_24
September Transylvania County NC
Silver Run Preserve
A 2-cleft long-exserted stigma and (usually) 2 long-exserted stamens, per Vascular Flora of the Carolinas.
COMPARE
flowers of Horsebalm species
JK Marlow jkm0509l_18
September Transylvania County NC
Silver Run Preserve
An open pyramidal panicle of lemon-scented yellow flowers, per Wildflowers of the Southern Mountains.
JK Marlow jkm201107_8128
November Greenville County SC
Ashmore Heritage Preserve
Calyx zygomorphic, 2-lipped, upper lip 3-toothed, lower lip with 2 long teeth, per Vascular Flora of the Carolinas.