Crataegus reverchonii var. reverchonii

Synonyms: Crataegus acutifolia var. insignis (Sargent) E. J. Palmer C. discolor Sargent C. insignis Sargent C. reverchonii var. discolor (Sargent) E. J. Palmer C. reverchonii var. stevensiana (Sargent) E. J. Palmer C. rubrisepala C. stevensiana
Treatment appears in FNA Volume 9. Treatment on page 537. Mentioned on page 538, 539.

Shrubs, 10–30 dm. Short-shoot leaf-blades 2–3.5 cm, not usually drying dark. Inflorescences usually glabrous. Flowers 8–10 mm diam.; styles 3–5.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Mesic areas in grasslands, by streams, brush
Elevation: 20–200 m

Distribution

V9 902-distribution-map.jpg

Ark., Kans., La., Mo., Okla., Tex.

Discussion

Variety reverchonii is common in parts of the Edwards Plateau, Texas, and extends to southwestern Missouri and northwestern Louisiana. It is the most abundant variety and, with its small flowers, 3–5 styles and pyrenes, the most distinctive; in other respects, it is far from uniform. The type form, with 10 stamens and pink anthers, is recorded from Texas; Crataegus stevensiana, with 10 stamens and cream anthers, occurs through most of the range. Less common variants, which may have slightly larger leaves and flowers and all occur in Missouri are: C. jasperensis Sargent (20 stamens and yellow anthers), C. parciflora Sargent and C. rotunda Sargent (both with 20 stamens and rose anthers), and C. discolor (10 stamens and rose anthers). These are in some respects intermediate with var. palmeri.

Selected References

None.

Lower Taxa

None.
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
red +, rose +  and cream +
James B. Phipps +
Sargent +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus sect. Crus-galli +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
green +  and paler green +
glossy +  and bright +
less orbiculate +  and broadly elliptic more or less orbiculate +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
glandular-punctate +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ark. +, Kans. +, La. +, Mo. +, Okla. +  and Tex. +
not +  and aggregated +
20–200 m +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 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 />) +
old +  and new +
Mesic areas in grasslands, by streams, brush +
pilose +  and glabrous +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
glabrous +  and short-stipitate-glandular +
subentire +
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 +
glabrescent +  and villous +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
red +  and orange-red +
10 cm100 mm <br />0.1 m <br /> (?) +
suborbicular +
Trees & Shrubs +
not arillate +
persistent +
free +  and distinct +
reflexed +  and patent +
triangular +
4 cm40 mm <br />0.04 m <br /> (?) +
1-50-flowered +  and few-leaved +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrescent +  and hairy +
Crataegus acutifolia var. insignis +, C. discolor +, C. insignis +, C. reverchonii var. discolor +, C. reverchonii var. stevensiana +, C. rubrisepala +  and C. stevensiana +
Crataegus reverchonii var. reverchonii +
Crataegus reverchonii +
variety +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
straight +
reflexed +  and recurved +
medium +  and stout +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
6 +  and 5 +