Myrica pensylvanica, the northern bayberry, is a species of Myrica native to eastern North America, from Newfoundland west to Ontario and Ohio, and south to North Carolina. It is also classified as Morella pensylvanica.
Myrica pensylvanica is a deciduous shrub growing to 4.5 m tall. The leaves are 2.5–7 cm long and 1.5-2.7 cm broad, broadest near the leaf apex, serrate, and sticky with a spicy scent when crushed. The flowers are borne in catkins 3–18 mm long, in range of colors from green to red. The fruit is a wrinkled berry 3-5.5 mm diameter, with a pale blue-purple waxy coating; they are an important food for yellow-rumped warblers.
This species has root nodules containing nitrogen-fixing microorganisms, allowing it to grow in relatively poor soils.
This plant is one of several Myrica species that are sometimes split into the genus Morella, e.g. in the Integrated Taxonomic Information System. Additionally southern bayberry, M. caroliniensis, and this species are sometimes lumped, disregarding the putative difference that M. caroliniensis is evergreen or tardily deciduous. M. pensylvanica is similar to wax myrtle, M. cerifera. These plants' leaves and scent distinguish them: wax myrtle leaves have scent glands on both sides and are fragrant when crushed, northern bayberry has scent glands mainly on the leaf undersides and is not markedly fragrant. Northern bayberry hybridizes with both southern bayberry and wax myrtle.
- "Myrica pensylvanica in Floras of North America @ efloras.org". Retrieved 6 June 2014.
- "ITIS Standard Report Page: Morella pensylvanica". Integrated Taxonomic Information System. Retrieved 6 June 2014.
- Mark H. Brand. "Myrica pensylvanica: Northern Bayberry". Archived 2010-08-01 at the Wayback Machine. Plant UConn Database of trees, shurbs and vines. Retrieved 2010-10-29.
- "History of Candles." Archived 2012-05-17 at the Wayback Machine. National Candle Association (2010). Retrieved 2010-10-29.
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