Crataegus gaylussacia

A. Heller

Bull. S. Calif. Acad. Sci. 2: 69. 1903.

Common names: Huckleberry or Suksdorf hawthorn
Endemic
Synonyms: Crataegus douglasii var. suksdorfii Sargent C. punctata var. brevispina Douglas ex Hooker C. suksdorfii (Sargent) Kruschke
Treatment appears in FNA Volume 9. Treatment on page 512. Mentioned on page 511, 513.

Shrubs, 30–100 dm. Stems: 1-year old twigs tan, older grayish; thorns on twigs recurved or straight, dark-brown young, 1–2 (–2.5) cm. Leaves: petiole 0.7–1.5 cm, glabrous, eglandular, sometimes glandular (Montana); blade ± rhombic-elliptic to elliptic-obovate or broadly ovate, 3–8 cm, lobes 0, or 2 or 3 per side, lobe apex acute to obtuse, margins serrate, teeth glandular in Montana, venation ± semicamptodromous, veins 3 or 4 per side, apex obtuse, abaxial surface ± glabrate, adaxial appressed-pubescent, hairy near veins in Oregon. Inflorescences 7–15-flowered; branches punctate, glabrous, sometimes densely pubescent (coastal Washington); bracteole margins stipitate or sessile-glandular. Flowers 15–17 mm diam.; hypanthium glabrous; sepals triangular, 4 mm, margins minutely and sparsely glandular-serrate, glabrous; stamens 20, anthers pink; styles 4 or 5. Pomes dull vinous purple becoming black mature, suborbicular to broadly ovoid, 8–10 mm diam., glabrous; sepals reflexed, apex obtuse; pyrenes 4 or 5, sides eroded. 2n = 34, 51, 68.


Phenology: Flowering Apr–May; fruiting Sep–Oct.
Habitat: Brush, especially near groundwater
Elevation: 10–400 m

Distribution

V9 861-distribution-map.jpg

B.C., Alaska, Calif., Idaho, Mont., Oreg., Wash.

Discussion

Crataegus gaylussacia occurs from north of San Francisco to coastal mainland British Columbia, Vancouver Island, the Queen Charlotte Islands, and coastal Alaska around Anchorage. The species ranges somewhat sporadically to Montana; it is the most northerly occurring Crataegus in North America, reaching 61 N.

Crataegus gaylussacia is an ignored name that has priority over C. suksdorfii. The plants have considerable variation in leaf shape, extremes of which are the type of C. gaylussacia from the southern edge of the species range, with 3–4 cm, more or less unlobed, elliptic to ovate leaf blades, and more or less acute teeth (not unlike syntype material of C. suksdorfii), and a contrasted northern Californian type with huge (8 cm), deeply incised leaves. T. A. Dickinson and coworkers (pers. comm.) restrict C. gaylussacia to the autotriplod from California and Oregon, calling the remainder C. suksdorfii.

Crataegus gaylussacia differs from C. douglasii by stamen number. Also, the thorns are usually shorter and the fruit is usually smaller and more orbicular than in C. douglasii, as well as being of a different early color. In addition, C. gaylussacia usually has more or less camptodromous venation, unlike C. douglasii. Hybrids with the introduced European C. monogyna were first noticed by R. Love and M. Feigen (1979) in the Willamette Valley, Oregon, and are now locally common.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus gaylussacia"
68 +, 51 +  and 34 +
hairy +  and appressed-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
A. Heller +
exfoliating +  and plated +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
compound +  and simple +
opposite +  and alternate +
cuneate +
elliptic to more or less obovate rhombic oblanceolate or ovate +  and elliptic +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
less rhombic-elliptic +  and elliptic-obovate or broadly ovate +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
? (?) +  and ? (?) +
sessile-glandular +  and stipitate +
orange +  and dark gray-brown +
pubescent +  and glabrous +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Huckleberry or Suksdorf hawthorn +
B.C. +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
not +  and aggregated +
10–400 m +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 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 />) +
usually tan +  and deep mahogany +
pubescent +  and glabrous +
Brush, especially near groundwater +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
obscure +  and evident +
sessile-glandular +  and stipitate +
glandular-serrate +  and serrate +
subentire +
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 +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Apr–May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
suborbicular +  and broadly ovoid +
Bull. S. Calif. Acad. Sci. +
not arillate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
persistent +
free +  and distinct +
triangular +
4 cm40 mm <br />0.04 m <br /> (?) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus douglasii var. suksdorfii +, C. punctata var. brevispina +  and C. suksdorfii +
Crataegus gaylussacia +
Crataegus (sect. Douglasia) ser. Douglasianae +
species +
craspedodromous +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
straight +
slender +  and stout +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
1 +  and few +
grayish +  and tan +
determinate +
older +  and old +
4 +  and 3 +