Crataegus ×kelloggii

Crataegus ×kelloggii Sargent

Trees & Shrubs 1: 117, plate 59. 1903.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 639. Mentioned on page 552.

Trees, 60–70 dm. Stems: trunks nearly black, 1 dm diam., bark deeply grooved; twigs: new growth nearly straight, dark-brown tinged with red, slender, slightly villous young, at end of 1st year bright redbrown, lustrous, marked by many small pale lenticels, 1-year old dark, dull reddish-brown; thorns on twigs absent or present, nearly straight, shiny, 1-year old bright chestnut-brown, slender, 3 cm. Leaves deciduous; stipules caducous, turning reddish, linear to linear-obovate, apex acuminate, glandular; petiole slender, 2–4 cm, slightly winged apically, white villous young, glabrescent, grooved; blade dark yellow-green, broadly ovate to suborbiculate, 5–6.5 × 4.5–6.5 cm, often wider than long, 1/2 grown when flowers open, thin but firm, base rounded, broadly cuneate, or truncate, lobes 4–6 per side, short, wide, lobe apex subacute to acute, margins coarsely serrate almost to base, teeth straight, gland-tipped, venation craspedodromous, veins 4–6 per side, prominent, slender, apex rounded, often short-pointed, abaxial surface paler, veins hairy, glabrescent except few hairs near base of thin yellow midvein, adaxial short-pale-hairy young, glabrescent. Inflorescences 5–10-flowered, compact; branches sparsely villous; bracteoles persistent until anthesis, oblong-obovate to linear, apex acuminate, margins glandular. Flowers 16 mm diam.; hypanthium hairy proximally; sepals slender, margins entire or minute, dark red stipitate-glandular, apex acuminate, abaxial surface glabrous, adaxial sparsely villous; stamens 20, anthers pale rose; styles 4 or 5. Pomes drooping on long, slender, glabrous pedicels, bright-yellow, suborbicular to short-ovate, 12–18 mm diam., lenticels numerous, small, pale; flesh yellow, thin, dry, mealy; sepals often deciduous from ripe fruit, small, with narrowly shallow cavity, slightly villous distally; pyrenes 4 or 5, acute at ends, rounded, 8 × 6 mm, dorsally very slightly grooved on back, sides plane.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Brush, open woods, rocky pastures
Elevation: 100–200 m

Discussion

Crataegus ×kelloggii was originally collected at the mouth of River des Peres, St. Louis, and was last found in Hannibal, near the Mississippi River; always rare, it is unknown in the wild today.

In all probability, Crataegus ×kelloggii is C. mollis × C. margarettae, as suggested by E. J. Palmer (1952).

Selected References

None.

Lower Taxa

None.
... more about "Crataegus ×kelloggii"
villous +, glabrescent +  and short-pale-hairy +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Crataegus ×kelloggii Sargent +
compound +  and simple +
opposite +  and alternate +
truncate +, cuneate +  and rounded +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
dark yellow-green +
5 cm50 mm <br />0.05 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
broadly ovate +  and suborbiculate +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
thin +, often wider than long +, 4.5cm +  and 6.5cm +
adnate +  and distinct +
crowded +, scattered +  and alternate +
not +  and aggregated +
100–200 m +
bright redbrown +
16 cm160 mm <br />0.16 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 />) +
reddish-brown +  and dark-brown tinged with red +
young +  and new +
dull +  and lustrous +
slender +
Brush, open woods, rocky pastures +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
pale +, small pale +  and dark +
numerous +  and many +
entire +  and serrate +
stipitate-glandular +
acuminate +, oblong-obovate +  and linear +
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 +
grooved +  and winged +
glabrescent +  and villous +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
bright-yellow +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
suborbicular +  and short-ovate +
Trees & Shrubs +
rounded +  and acute +
not arillate +
deciduous +
free +  and distinct +
appressed +  and erect +
triangular +
small +  and slender +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus ×kelloggii +
Crataegus +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
bright chestnut-brown +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (?) +
craspedodromous +  and gland-tipped +
straight +
inconspicuous +
glabrescent +  and hairy +
4 +  and 6 +
slender +