Herbarium specimen AUA 422 Crataegus calpodendron (Ehrh.) Medik., a present determination at ( AUA) Herbarium, Auburn University in Auburn, Alabama. Image is donation of Curator Curtis J. Hansen.

Scientific names: Present - Crataegus calpodendron (Ehrh.) Medik.
A. W. Chapman's determination in 1897 -Crataegus tomentosa L. var microcarpa Chapman ;
C.D. Beadle’s renamed it to - Crataegus tomentosa chapmani Beadle in 1898.
W.W. Ashe’s renamed it to Crataegus chapmani (Beadle) Ashe and it was accepted in 1899.

Common name: Chapman's Hawthorn
Family: Rosaceae; Rose
Flowering period: April- May
Fruiting period: September
Habitat: Rich soil, river banks

Type locality: Banks of Silver Creek, Floyd County, Georgia
Herbarium specimens: Auburn, AL
Comments: Crataegus tomentosa L. var microcarpa Chapman was discovered and collected in Rome, Floyd County, Georgia by Alvan W. Chapman (1809-1899) a botanist from Apalachicola Florida. In 1899 it was renamed to Crataegus chapmanii (Beadle) Ashe.

Description: Crataegus tomentosa L. "Leaves large (3' - 5' long), broadly ovate or oval, finely serrate, and slightly lobed above the middle, abruptly narrowed into a short margined petiole, pubescent, especially beneath, the veins straight and impressed; corymbs large, tomentose; styles 1-3; fruit pear shaped, orange-red. - Chiefly northern.
var. microcarpa:
" Leaves broadly ovate, membranaceous, slightly toothed or entire, pubescent beneath, slender-petioled, 3'-6', (5-13 cm) long; flowers 0,5', (1.5 cm) wide; fruit globose, red, 3" (5-7 mm) wide; styles mostly 2. - River banks near Rome, Georgia. Aprill. -A small tree." -Alvan W. Chapman, 1897.

Description 2.: Crataegus tomentosa chapmani Beadle
"- So far I have not seen the typical C. tomentosa in the south, and I agree with Dr. Chapman in recognizing the form with very small fruit as a well marked variety. Near Biltmore, N.C., C. tomentosa Chapmani forms a small tree 4-6 m high, growing usually in rich soil and attaining a trunk diameter of 1 dm or less. The branches are gray, and armed with slender spines; leaves 5-12 cm long (occasionally larger), broadly ovate, prominently veined, sharply serrate and incisely lobed, and form sparingly to densely pubescent beneath: corymbs many-flowered, leafy, bearing glandular, caduceus bracts, and covered when young with fine, pale tomentum, which finally disappears: flowers small, 1-5 cm wide, ill-scented: calyx pubescent, the divisions lanceolate, serrate, acute: fruit sub-globose, 5-7 mm in diameter at maturity, bright red, long persistent.
Originally discovered on the banks of Silver creek, Floyd County, Georgia, by Dr. Chapman, whose name I have used in the new trinomial. The distribution is probably confined to the region of the southern Allegheny mountains." -C.D. Beadle, 1898.

Last updated on November 12, 2007.

References :
1. Chapman, Alvan W. Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system 3rd ed. New York: American Book Company, 1897: 385
2. Beadle, Chauncey D. " Notes on the Botany of the Southeastern States. II." Botanical Gazette, Vol. 25, No. 5. (1898) : 360
3. Little, Elbert L. Check List of Native and Naturalized Trees of The United States (Including Alaska) Washington D.C.: Forest Service, 1953.:133
4. Auburn University Herbarium ( http://www.auburn.edu/herbarium/), Department of Biological Sciences Auburn University, Auburn, AL 36849
5. USDA, NRCS. 2007. The PLANTS Database, 6 March 2007 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Botanical Explorations in Floyd County
List of Hawthorns from Floyd County, Northwest Georgia, United States
A.W. Chapman collection from Floyd County, Georgia