Vascular Plants of North Carolina
Account for Southern Arrowwood - Viburnum dentatum   L.
Members of Viburnaceae:
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Section 6 » Order Dipsacales » Family Viburnaceae
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AuthorL.
DistributionThis description here refers to the “strict-sense” V. dentatum and V. dentatum var. dentatum. It is believed to occur mainly in the central and eastern Piedmont and the northern Coastal Plain. Its range in much of the Coastal Plain is not well known, as a number of records there actually belong to V. recognitum, which see. Weakley's (2018) province range map shows it as "common" in the Coastal Plain, "uncommon" in the Piedmont, and "rare" in the Mountains. Most specimens from the Coastal Plain in the SERNEC database seem to have been identified as the recently-split V. recognitum. Nonetheless, the state range map (below) is likely quite incomplete. Records for a few central Mountain counties need to be re-evaluated vis-a-vis V. carolinianum.

This species ranges from southeastern PA and southern NJ south to SC and northern GA, and sparingly westward into the southern Appalachians. However, it is a species mainly of the Piedmont and Coastal Plain.
AbundanceThis is an uncommon species in the (northern) Coastal Plain and Piedmont. Details of abundance are poorly known owing to recent splits of the former V. dentatum (broad sense). In NC it is much less common than V. recognitum.
HabitatThis is a wetland species found in bottomlands, along creek banks, swamps, and wet thickets. Details of its habitats versus V. recognitum, however, are badly needed.
See also Habitat Account for Shoreline Shrublands
PhenologyBlooms in late March and April; fruits from July to September.
IdentificationThis species is a medium-sized shrub with deciduous, opposite leaves, growing to 8-10’ tall. It is very similar in appearance to two other species formerly within the V. dentatum complex – V. carolinianum and V. recognitum. From the latter, whose range it broadly overlaps, this species has more rounded/rotund leaves, approaching nearly a wide as long (around 3”), and has some pubescence over the underside of the leaves. Viburnum recognitum has ovate leaves that are, based on photos on Google, about 1.5 to approaching 2 times as long as wide; its leaves are mostly glabrous below but have pubescence on some veins and in leaf axils. Viburnum carolinianum has thick leaves with a more sunken vein appearance and is more heavily pubescent below. The similar V. rafinesqueanum, not in this complex, has leaves that are essentially sessile or have very short petioles.
Taxonomic CommentsThis species was formerly a part of a very broadly based one, also named as V. dentatum. When split out, this taxon is a more southerly one than is V. recognitum. Note that V. dentatum var. lucidum in RAB (1968) is now named as V. recognitum. Also in RAB (1968), V. dentatum var. dentatum has been split off into V. carolinianum and V. dentatum, with the former being mostly the taxon in the mountains.

Other Common Name(s)Arrowwood Viburnum, Roughish Arrowwood, Smooth Arrowwood
State RankS5 [S4?]
Global RankG5
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