Celtis tenuifolia

Dwarf Hackberry
Celtis tenuifolia leaves after a rain
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Rosales
Family:	Cannabaceae
Genus:	Celtis
Species:	C. tenuifolia
Binomial name
Celtis tenuifolia Nutt.

Celtis tenuifolia, the Dwarf Hackberry or Georgia Hackberry is a shrub or small tree 2 to 12 meters high. It is native to eastern North America, but is very uncommon north of the Ohio River.^[1] In Canada, dwarf hackberry is designated as threatened and protected under Canada's Species at Risk Act.^[2]

Characteristics

The leaves are alternate, simple, blades 5 to 7 centimeters long, and 2 to 3.5 centimeters in width, shallowly toothed, and finely hairy. The winter buds are brown and hairy, similar to those of other hackberries, but smaller, only 1 to 2 centimeters long. Terminal buds absent.

Flowers are monecious and unisexual, occurring either solitarily or in small clusters. This species is wind-pollinated and appears to be self-compatible.

The fruit is a berry-like drupe, 5 to 8 millimeters in diameter, consisting of a single stone encased within a thin, sweet mesocarp. This edible mesocarp is composed of a purplish-brown smooth outer crust and a pulpy yellow inside.

Ecology and Uses

Dwarf hackberry is shade intolerant, drought tolerant and slow-growing. It grows in dry upland habitats, including open woodlands, alvars, and sandy near-shore habitats. It is usually not found among other hackberries, although when other hackberry species occur in proximity to dwarf hackberry, intermediate forms may occur.

Dispersal is primarily by birds although mammals are attracted by the sweet fruit and likely play a role in local dispersal.

References

Burton V. Barnes and Warren H. Wagner,Michigan Trees

1. ^ "Celtis Tenuifolia Range Map". United States Geological Survey. http://esp.cr.usgs.gov/data/atlas/little/celttenu.pdf. Retrieved 2008-03-02. 
2. ^ COSEWIC. 2003. COSEWIC assessment and update status report on the dwarf hackberry Celtis tenuifolia in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 15 pp. (www.sararegistry.gc.ca/status/status_e.cfm)