Crataegus wootoniana

Eggleston

Torreya 7: 236. 1908.

Common names: Wooton’s hawthorn
Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 564. Mentioned on page 561, 562, 563, 591.

Shrubs, 20 dm. Stems little branched, thorny; twigs: new growth not recorded, glabrous, 1-year old reddish-brown, older gray; thorns on twigs 1-year old reddish-brown, ± stout, 4 cm. Leaves: petiole length 40–50% blade, eglandular or sparsely glandular; blade ovate, 3–4 (–5) cm, 70–100% mature size at anthesis, base truncate to broadly cuneate, lobes 3 or 4 per side, sinuses shallow, lobe apex obtuse to cuspidate, margins serrate, veins 4 or 5 per side, apex subacute, adaxial surface short-pubescent young, later glabrate. Inflorescences 5–10-flowered; branches glabrous; bracteoles absent or few, shape not recorded; anthesis in spring. Flowers 10–12 mm diam.; hypanthium glabrous; sepals 2–3 mm, margins subentire, abaxially glabrous; stamens 10, anthers pink; styles 3. Pomes shiny red, ellipsoid, 8 mm; sepal remnants erect-patent; pyrenes 2 or 3, dorsally grooved.


Phenology: Flowering May; fruiting Sep.
Habitat: Grassy areas near streams
Elevation: 2000–3000 m

Discussion

Of conservation concern.

Crataegus wootoniana is known from New Mexico. No authentic records of C. wootoniana for Arizona are known; all alleged examples seen proved to be C. macracantha.

Crataegus wootoniana is similar to the widespread 57. C. macrosperma (see discussion thereunder), from which it differs little.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus wootoniana"
appressed-scabrous-pubescent +
glabrate +  and short-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Eggleston +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
truncate +  and broadly cuneate +
Tenuifoliae +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Wooton’s hawthorn +
not +  and aggregated +
2000–3000 m +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 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 +  and reddish-brown +
older +, old +  and new +
Grassy areas near streams +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
eglandular +  and craspedodromous +
subentire +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
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 +
eglandular +  and sessile-glandular +
glandular +  and eglandular +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering May +  and fruiting Sep. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
ellipsoid +
8 cm80 mm <br />0.08 m <br /> (?) +
not arillate +
persistent +
free +  and distinct +
erect-patent +  and recurved +
triangular +
nonaccrescent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1-50-flowered +  and few-leaved +
Conservation concern +  and Endemic +
free +  and distinct +
thorny +  and branched +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus sect. Tenuifoliae +
Crataegus wootoniana +
Crataegus (sect. Coccineae) ser. Tenuifoliae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
reddish-brown +
straight +
stout +  and slender +
4 cm40 mm <br />0.04 m <br /> (?) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
glabrescent +  and pilose +
5 +  and 4 +