Crataegus pruinosa var. dissona

(Sargent) Eggleston

Bull. New York State Mus. Nat. Hist. 254: 422. 1924.

Endemic
Basionym: Crataegus dissona Sargent Rhodora 5: 60. 1903
Synonyms: C. brachypoda Sargent C. disjuncta Sargent C. pruinosa var. brachypoda (Sargent) E. J. Palmer C. rigida
Treatment appears in FNA Volume 9. Treatment on page 575. Mentioned on page 572.

Shrubs, 20–40 dm. Leaves: blade trullate to ovate or ovate-oblong, 3–7 cm, length/width = 1.5, lobes 4 per side, lobe apex acute, base broadly cuneate to truncate, adaxial surface glabrous, sometimes sparsely appressed-hairy along veins. Inflorescence branches glabrous. Flowers 15–22 mm diam.; stamens 10, anthers bright rose to dull purple, sometimes cream. 2n = 51.


Phenology: Flowering Apr–May; fruiting Sep–Nov.
Habitat: Brush and open woodlands
Elevation: 20–300 m

Distribution

V9 979-distribution-map.jpg

Ont., Conn., Ga., Ind., Ky., Mass., Mo., N.Y., Ohio, Wis.

Discussion

Variety dissona, found from Missouri to Wisconsin and through the Great Lakes to New England, then south to Georgia, is widely scattered throughout the range of var. pruinosa and an unnamed southern form (see var. rugosa). Its detailed distribution is not well known but it is almost certainly more widespread than recorded. The variation in leaf shape of var. dissona closely parallels that of var. pruinosa. Crataegus disjuncta is a similar form with particularly large leaves; C. brachypoda has cream anthers.

Selected References

None.

Lower Taxa

None.
James B. Phipps +
(Sargent) Eggleston +
Crataegus dissona +
Ont. +, Conn. +, Ga. +, Ind. +, Ky. +, Mass. +, Mo. +, N.Y. +, Ohio +  and Wis. +
20–300 m +
Brush and open woodlands +
Flowering Apr–May +  and fruiting Sep–Nov. +
Bull. New York State Mus. Nat. Hist. +
C. brachypoda +, C. disjuncta +, C. pruinosa var. brachypoda +  and C. rigida +
Crataegus pruinosa var. dissona +
Crataegus pruinosa +
variety +