Crataegus lanuginosa

Sargent

Trees & Shrubs 1: 113, plate 57. 1903.

Conservation concernEndemic
Synonyms: Crataegus mollis var. lanuginosa (Sargent) Lance
Treatment appears in FNA Volume 9. Treatment on page 555. Mentioned on page 552, 556.

Shrubs or arborescent shrubs, 20–80 dm. Stems: trunk bark pale, stout; twigs: new growth light green, villous, at end of 1st year dull redbrown, sparsely villous or pubescent, strongly flexuous, 1-year old gray-brown, stout; thorns on twigs numerous, straight, shiny purplish black, ultimately ashy gray, stout, (3–) 7 (–9) cm. Leaves: stipules caducous, oblong, foliaceous, acute, villous, minutely red glandular; petiole stout, length 25–30% blade, slightly grooved, densely tomentose, glandularity not recorded; blade bluish, short-ovate to suborbiculate, 4–5 cm, less than 1/2 grown when flowers open, subcoriaceous, base broadly cuneate to rounded, lobes 1 or 2 per side, short, wide, lobe apex acute, margins coarsely, sharply doubly serrate, teeth glandular, veins 3–5 per side, apex acute or rounded and short-pointed, abaxial surface yellow-green, tomentose, midvein prominent, adaxial dark or bluish green, lustrous, densely hoary tomentose, later scabrous. Inflorescences 5–10-flowered, compact; branches hoary-tomentose; bracteoles persistent, oblong-obovate, (smaller) membranous or (larger) herbaceous, margins finely glandular-serrate, apex acute or rounded, villous. Flowers 20 mm diam.; hypanthium densely covered with long, matted, white hairs; sepals broad, short, margins stipitate-glandular, abaxially densely villous; stamens 20, anthers rose; styles 5, base surrounded by large tufts of white hairs. Pomes in clusters on erect, tomentose pedicels, dark crimson, sometimes with pale dots, orbicular to suborbicular or short-oblong, 10–12 mm diam., slightly hairy at ends; flesh thin, orange, dry, mealy; calyces sessile, enlarged, with wide deep cavity; sepals persistent, usually erect and spreading or incurved, coarsely serrate, villous; pyrenes 5, dorsally irregularly grooved, sides smooth, acute at ends.


Phenology: Flowering late Apr; fruiting late Oct.
Habitat: Dry, gravelly hills
Elevation: 100–200 m

Discussion

Of conservation concern.

Crataegus lanuginosa was recorded as common near Webb City, Jasper County, in the early part of the 20th century; it has not been collected since 1957. The species is distinguished from others of ser. Molles by its relatively small leaves of a distinctly bluish color; the dark crimson, hard fruits, and remarkable development of the thorns, are also unusual in ser. Molles, as is the habitat on dry gravelly hills (when 20–30 dm tall), although it also occurs in more mesic sites (when 40–80 dm tall).

Selected References

None.

Lower Taxa

None.

"pubescent" is not a number."broad" is not a number.

... more about "Crataegus lanuginosa"
bluish green +  and dark +
tomentose +  and hoary +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Sargent +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
broadly cuneate +  and rounded +
Molles +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
short-ovate +  and suborbiculate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblong-obovate +
hoary-tomentose +
enlarged +
adnate +  and distinct +
crowded +, scattered +  and alternate +
not +  and aggregated +
100–200 m +
20 cm200 mm <br />0.2 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 />) +
gray-brown +, redbrown +  and light green +
old +  and new +
pubescent +  and villous +
Dry, gravelly hills +
less densely pubescent +  and tomentose +
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 +
persistent +
villous +  and stipitate-glandular +
glandular-laciniate to glandular-serrate +  and oblong +
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 (?) +
Pink (?) +  and White (?) +
free +  and distinct +
post-mature +
Flowering late Apr +  and fruiting late Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
dark crimson +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
orbicular +  and suborbicular or short-oblong +
Trees & Shrubs +
not arillate +
persistent +
free +  and distinct +
incurved +, spreading +  and erect +
triangular +
accrescent +
1-50-flowered +  and few-leaved +
shallow +  and deep +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus mollis var. lanuginosa +
Crataegus lanuginosa +
Crataegus (sect. Coccineae) ser. Molles +
species +
7 cm70 mm <br />0.07 m <br /> (9 cm90 mm <br />0.09 m <br />) +
ashy gray +  and purplish black +
straight +
slender +  and stout +
7 cm70 mm <br />0.07 m <br /> (?) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
3 +  and 5 +