Crataegus chrysocarpa var. phoeniceoides

J. B. Phipps & Sennikov

Willdenowia 43: 39. 2013.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 600. Mentioned on page 598.

Shrubs, 20–30 dm. Leaves: blade ovate to rhombic-obovate, base ± cuneate, sinuses: max LII 15–20%, lobe apex acute, veins 3–5 per side, abaxial surface glabrous, adaxial glabrous young. Inflorescences: branches glabrous. Flowers 15–20 mm diam.; hypanthium externally glabrous; stamens 10, anthers cream or ivory. Pomes red, suborbicular, 8–10 mm diam., glabrous.


Phenology: Flowering May–Jun; fruiting Sep–Oct.
Habitat: Open brush
Elevation: 50–400 m

Distribution

V9 1027-distribution-map.jpg

Ont., Que., Conn., Maine, Mass., N.Y., Vt., Wis.

Discussion

Because of confusion with similar, insufficiently studied, glabrous-inflorescence forms, the distribution given is inclusive.

Variety phoeniceoides in the strict sense is, in general appearance, like typical forms of var. chrysocarpa but is completely glabrous and, uniquely for this species, has the larger bracteoles stipitate-glandular like those in the Crataegus dodgei group.

Selected References

None.

Lower Taxa

None.
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ivory +  and cream +
James B. Phipps +
J. B. Phipps & Sennikov +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus sect. Rotundifoliae +
5 cm50 mm <br />0.05 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
purplish +  and yellow +
ovate +  and rhombic-obovate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
elliptic +  and linear +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ont. +, Que. +, Conn. +, Maine +, Mass. +, N.Y. +, Vt. +  and Wis. +
not +  and aggregated +
50–400 m +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 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 />) +
yellowish +  and greenish brown or gray-brown +
appressed-pubescent +
Open brush +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
stipitate-glandular +
deciduous +
glandular-serrate +  and serrate +
short-stipitate-glandular +
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 +
Flowering May–Jun +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
suborbicular +
Willdenowia +
nonaccrescent +
not arillate +
persistent +
free +  and distinct +
appressed +  and erect +
spreading +  and reflexed +
triangular +
4 cm40 mm <br />0.04 m <br /> (?) +
1-50-flowered +  and few-leaved +
concave +  and plane +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus columbiana var. chrysocarpa +  and C. rotundifolia var. chrysocarpa +
Crataegus chrysocarpa var. phoeniceoides +
Crataegus chrysocarpa +
variety +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
black +  and dark mahogany +
straight +
less slender +  and more or less 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 +
straight +
determinate +
3 +  and 5 +