Crataegus wattiana var. wattiana

Synonyms: Crataegus altaica (Loudon) Lange C. korolkowii L. Henry C. purpurea var. altaica Loudon
Treatment appears in FNA Volume 9. Treatment on page 515.

Trees, 30–60 dm. Stems: 1-year old twigs deep red or purple-brown, older dull or dark gray; thorns on twigs absent or sparse, stout, 1–4 cm. Leaves deciduous; petiole 2–3.5 cm, adaxially glabrous or sparsely pubescent; blade pale green abaxially, dull bluish green adaxially, ± ovate to triangular-ovate, 5–9 cm, base truncate to broadly cuneate, lobes 3–5 per side, evenly spaced, sinuses deep, margins sharply serrate, veins 4 or 5 per side, to lobes and deeper sinuses, apex acute, surfaces glabrous. Inflorescences 20–50-flowered; proximal bracteoles falcate, stipuliform, 2 cm, herbaceous, distal caducous, linear, membranous, margins sparsely sessile-glandular. Flowers 12–15 mm diam.; hypanthium glabrous; sepals triangular-ovate, 2–4 mm, entire or 1-toothed or 2-toothed; styles 4 or 5. Pomes yellow to bright orange or orangebrown, suborbicular, 8–12 mm diam.; sepals persistent, reflexed; pyrenes 4 or 5.2n = 51, 68.


Phenology: Flowering Apr–Jun; fruiting Sep–Oct.
Habitat: Scrub
Elevation: 300–2500 m

Distribution

V9 869-distribution-map.jpg

Introduced; Wash., c Asia

Discussion

Variety wattiana has become naturalized in the Washington Park Arboretum, Seattle. The variety has leaves shallowly incised throughout; those of var. incisa C. K. Schneider are pinnatisect basally.

Selected References

None.

Lower Taxa

None.

"timespetals" is not declared as a valid unit of measurement for this property.

0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Hemsley & Lace +
stipuliform +  and falcate +
compound +  and simple +
opposite +  and alternate +
truncate +  and broadly cuneate +
Crataegus unranked +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
bluish green +  and pale green +
less ovate +  and triangular-ovate +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
linear +  and elliptic +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Wash. +  and c Asia +
not +  and aggregated +
300–2500 m +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 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 />) +
stipuliform +  and falcate +
tomentose +  and glabrous +
Scrub +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
serrate +  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 +
pubescent +  and glabrous +
1/5 +  and 1/3 +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Apr–Jun +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
yellow +  and bright orange or orangebrown +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
suborbicular +
stipuliform +  and falcate +
J. Linn. Soc., Bot. +
not arillate +
persistent +
free +  and distinct +
2-toothed +, 1-toothed +, entire +  and triangular-ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1-50-flowered +  and few-leaved +
Introduced +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus altaica +, C. korolkowii +  and C. purpurea var. altaica +
Crataegus wattiana var. wattiana +
Crataegus wattiana +
variety +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
1 +  and few +
dark gray +, purple-brown +, red +  and deep +
determinate +
older +  and old +
5 +  and 4 +