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.
appressed-hairy +  and glabrous +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
cream +, bright rose +  and dull purple +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
mauve +  and pink +
James B. Phipps +
(Sargent) Eggleston +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
broadly cuneate +  and truncate +
Crataegus dissona +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
mid +  and dark green +
trullate +  and ovate or ovate-oblong +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
villous +  and glabrous +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ont. +, Conn. +, Ga. +, Ind. +, Ky. +, Mass. +, Mo. +, N.Y. +, Ohio +  and Wis. +
not +  and aggregated +
20–300 m +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
yellow +  and red or purplish +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
paler +, gray +, purple-brown +  and reddish-brown +
older +, old +  and new +
Brush and open woodlands +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
sessile +  and craspedodromous +
glandular-serrate +  and serrate +
subentire +
glabrous +  and short-stipitate-glandular +
subentire +  and entire +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elliptic +  and circular +
0 (?) +  and 4 (?) +
free +  and distinct +
post-mature +
glandular +
Flowering Apr–May +  and fruiting Sep–Nov. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
scarlet +, bright crimson +  and greenish +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
suborbicular +
Bull. New York State Mus. Nat. Hist. +
not arillate +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
C. brachypoda +, C. disjuncta +, C. pruinosa var. brachypoda +  and C. rigida +
Crataegus pruinosa var. dissona +
Crataegus pruinosa +
variety +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
purple +  and shiny black +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
6 +  and 5 +