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Crataegus erythropoda Ashe

Family: Rosaceae

Description: Small tree or shrub a 3.0 m in height; branches spiny, the spines purplish-brown and averaging 3.0 to 4.0 cm in length; leaves simple, alternate, broadly elliptic to ovate, not strongly rhombic, 3.0 to 5.0 cm in length and coarsely serrate, but not lobed or only shallowly lobed, the margins somewhat glandular tipped; flower petals 5 and white, stamens 5 to 8, carpels 1 to 5; fruit a red to brown or black pome 7.0 to 8.0 mm in diameter.

Distribution: Thought to occur along streams and in the mountains over the northern part of the state at 1,900 to 2,450 m (6,500 to 8,000 ft) in elevation, some recent collections from the Gila National Forest that were first thought to be C. wootoniana now appear to be C. erythropoda.

Plants Seen or Cited: UAZ: Only one important collection from NM, McMillen Forest Campground, were this species is known to occur. NMSU: One collection along McMillan Spring Trail, 0.25 miles south of the campground, Gila National Forest, Sec. 17, T - 6S, R - 13W, 7,000 ft in elevation, Charles Huff, 22 May 97. This too could be C. wootoniana.

Discussion: Only considerable field work will start to provide a better understanding of the genus Crataegus. This species is more common in northern New Mexico and Colorado. The type specimen was described from Larimer County in CO where the species is somewhat less confusing. This species should not be considered rare.

Important Literature:

Carter, J.L. 1997. Trees and shrubs of New Mexico.

Eggelston, W.W. 1907. Crataegus in New Mexico. Torrey, 7:235-236.

Kearney, T.H. and R.H. Peebles. 1951. Arizona flora.

Martin, W.C. and C.R. Hutchins. 1980. A flora of New Mexico.

Weber, W. A. and R. C. Wittmann. 1992. Catalog of the Colorado flora: A biodiversity baseline.

Information Compiled By: Jack Carter, 1998

Photo credits in header Peniocereus greggii var. greggii © T. Todsen,
Lepidospartum burgessii © M. Howard, Argemone pleiacantha ssp. pinnatisecta © R. Sivinski
Design: J. Mygatt; Copyright © 1999-2005 New Mexico Rare Plant Technical Council