Viburnum opulus ssp. trilobum var. americanum.USDA-NRCS PLANTS Database Herman, D.E., et al. 1996. (Accessed 6/2014).

Viburnum opulus var. americanum is a shrub, to 4 m tall; stems gray-brown, smooth, winter buds green, two-scaled.

Leaves opposite, maple-leaf-shaped, 3-lobed, margin toothed, 4-12 cm long, tip pointed, base blunt, dark green above, paler, finely hairy below, stalks 1-2 cm. The native species has leaf stalks (petioles) with stalked, dome-shaped glands, higher than wide, and longer leaf lobes than V. opulus var. opulus. Fall color yellow to red 

Wetland status: FACW. 

Frequency in NYC: Very infrequent. 

Origin: Native to Putnam Co. and north. 

Habitat: Planted. Prefers soil pH 5.5-7.5 (USDA, NRCS 2010). 

Notes: Separated into different species by Rehder (1986) but not by Gleason & Cronquist (1991). V. trilobum is rarely offered by nurseries. V. opulus var. opulus is usually planted in restorations as an unintended substitute for V. trilobum.