Crataegus erythropoda

Ashe

Bull. North Carolina Agric. Exp. Sta. 175: 113. 1900.

Common names: Cerro hawthorn
Endemic
Synonyms: Crataegus cerronis A. Nelson
Treatment appears in FNA Volume 9. Treatment on page 509. Mentioned on page 508, 510.

Shrubs or trees, 50 dm. Stems: twigs: new growth greenish, glabrous, 1-year old dark reddish mahogany; bark on younger 2–5 cm thick branches dark gray-brown, sometimes copper-colored; thorns on twigs straight or slightly recurved, 2-years old black, shiny, moderately stout, 2–4 cm. Leaves: petiole 1–2 cm; blade rhombic-elliptic, 3–5 cm, length 1.6 times width, ± coriaceous-shining, base cuneate, lobes 3 or 4 per side, lobe apex acute, margins serrate, teeth very short, venation craspedodromous, veins 4 or 5 per side, apex acute, abaxial surface glabrate, adaxial sparsely pilose young. Inflorescences 5–10-flowered; branches glandular-punctate; bracteoles few to absent, margins sessile-glandular. Flowers 14–18 mm diam.; sepals narrowly triangular, 3–4 mm, margins glandular-serrate, teeth small, apex acute, glabrous; stamens 10, anthers pink-purple to purple; styles 4 or 5. Pomes deep red to vinous purple mature, orbicular, 10 mm diam.; sepals reflexed, 4 mm; pyrenes 3–5, sides excavated.


Phenology: Flowering May–Jun; fruiting Sep–Oct.
Habitat: Sagebrush, pastures, usually along streams
Elevation: 1700–2600 m

Discussion

Crataegus erythropoda is found mainly in Colorado westward from the foothills of the Front Range; it also extends north and south into adjacent states. N. H. Holmgren (1997b) recorded it from Arizona and Utah; no authenticating specimens have been encountered. The species is locally common and is early-flowering.

Crataegus erythropoda varies little; it has striking deep red to vinous fruit color and is usually easily recognized, although the black-fruited C. rivularis may also show a similar color when not fully ripe. Paucity of observed bracteoles may indicate they are very early caducous. The specific epithet alludes to the pedicels, which may turn red in the fall or under particularly dry conditions, which is neither constant in nor unique to C. erythropoda.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus erythropoda"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
cream +  and pink +
pink-purple +  and purple +
pink-purple to purple +
James B. Phipps +
exfoliating +  and plated +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
compound +  and simple +
opposite +  and alternate +
cuneate +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
coriaceous-shining +
suborbiculate +, oblanceolate +, obovate +, less rhombic +  and more or less elliptic elliptic-oblong or ovate-rhombic +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
few +  and absent +
copper-colored +  and dark gray-brown +
glandular-punctate +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Cerro hawthorn +
Colo. +, N.Mex. +  and Wyo. +
not +  and aggregated +
1700–2600 m +
1.4 cm14 mm <br />0.014 m <br /> (1.8 cm18 mm <br />0.018 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 />) +
mahogany +, dark reddish +  and greenish +
old +  and new +
Sagebrush, pastures, usually along streams +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
obscure +  and evident +
eglandular +  and craspedodromous +
glandular-serrate +  and serrate +
entire +, subentire +  and crenate +
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 +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering May–Jun +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
10 cm100 mm <br />0.1 m <br /> (?) +
orbicular +
Bull. North Carolina Agric. Exp. Sta. +
not arillate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
persistent +
free +  and distinct +
triangular +
4 cm40 mm <br />0.04 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus cerronis +
Crataegus erythropoda +
Crataegus (sect. Douglasia) ser. Cerrones +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
slender +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
craspedodromous +
inconspicuous +
1 +  and few +
straight +
determinate +
5 +  and 4 +
tree +  and shrub +