Crataegus douglasii Lindl.

Black hawthorn (en)

Species

Angiosperms > Rosales > Rosaceae > Crataegus

Characteristics

Shrubs, 40–80 dm. Stems: 1-year old twigs deep tan to dark mahogany, ± shiny young, older gray to dark gray, often showing brown or alternatively tan-brown eastward; thorns on twigs straight or slightly recurved, deep brown young, (1.5–)2–3.5 cm. Leaves: petiole 0.7–1.5 cm, pubescent young, slightly glandular; blade usually elliptic to broadly elliptic or subrhombic (elliptic-obovate when lobes very small), 4–7 cm, lobes 2–4 per side, ?sinuses shallow, LII 10–20%?, lobe apex subobtuse to acute, margins coarsely, sharply serrate, ?teeth small, gland-tipped young?, venation craspedodromous, veins 4 or 5 per side, apex acute to obtuse, abaxial surface usually glabrous except on veins, adaxial densely short-appressed-pubescent. Inflorescences 10–25-flowered; branches glabrous; bracteole margins stipitate-or sessile-glandular. Flowers 10–15 mm diam.; hypanthium glabrous; sepals broadly triangular, 3–4 mm, margins sparsely glandular, ?adaxially glabrous?; stamens 10, anthers pink; styles 3 or 4. Pomes vinous and usually waxy glaucous young, dull black mature, usually ellipsoid, 6–8 mm diam., glabrous; sepal remnants reflexed, apex obtuse; pyrenes 3 or 4, sides excavated, sometimes only shallowly. 2n = 68.
More
Tree to 12 m, or sometimes an arborescent shrub; twigs glabrous, unarmed or with scattered stout thorns 1–2.5 cm; lvs oblong-obovate to elliptic, often broadly so, mostly 2–4 × 1.5–3 cm and with 2–4 pairs of small, shallow, often irregular lateral lobes, or larger and more deeply cleft on vegetative shoots, firm, dark green and glossy above, essentially glabrous; fls 1–1.3 cm wide, in mostly 5–12-fld glabrous compound cymes; fr 0.8–1 cm thick, dark wine-color to black when fully ripe, succulent; nutlets 3–5, with a large pit on the inner surface. Local near Lake Superior and Lake Huron in ne. Minn., n. Mich., and Ont.; widespread in the w. cordillera.
A small tree. It grows to 11 m tall. The leaves are small and 2-8 cm long. They have coarse double teeth around the edge. There are shallow lobes. The thorns are short, less than 3 cm. The fruits are oval and 8-10 mm across. They are dark reddish-purple or black.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 6.0
Root system -
Rooting depth (meter) 0.3
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Open woods, banks of mountain streams and on rocky banks. Brush, old fields, fencerows, woodland edges; at elevations from 50-1,600 metres.
More
Temperate. It grows in damp meadows and along waterways.
Light 4-8
Soil humidity 4-8
Soil texture 1-5
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 4-7

Usage

The fruit can be eaten fresh. They are used for jams, sauces, drinks and jellies. They can be dried and stored for future use.
Uses eating fiber food forage material medicinal wood
Edible fruits leaves seeds
Therapeutic use Gastrointestinal Aid (bark), Antidiarrheal (bark), Antidiarrheal (fruit), Panacea (fruit), Dermatological Aid (leaf), Gastrointestinal Aid (root), Antirheumatic (External) (sap), Gastrointestinal Aid (sap), Antidiarrheal (shoot), Oral Aid (shoot), Pediatric Aid (shoot), Dermatological Aid (unspecified), Poultice (unspecified), Swelling (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed. The seed need cold treatment. Plants can also be grafted.
Mode cuttings seedlings
Germination duration (days) 180 - 730
Germination temperacture (C°) 10 - 15
Germination luminosity -
Germination treatment scarification
Minimum temperature (C°) -29
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Crataegus douglasii leaf picture by Mathew March (cc-by-sa)
Crataegus douglasii leaf picture by Michael Finch (cc-by-sa)
Crataegus douglasii leaf picture by Michael Finch (cc-by-sa)

Flower

Crataegus douglasii flower picture by Kate (cc-by-sa)
Crataegus douglasii flower picture by Jeffrey Katuski (cc-by-sa)
Crataegus douglasii flower picture by Katerina prud (cc-by-sa)

Fruit

Crataegus douglasii fruit picture by Mathew March (cc-by-sa)
Crataegus douglasii fruit picture by Fei Lauren (cc-by-sa)
Crataegus douglasii fruit picture by Michael Finch (cc-by-sa)

Distribution

Crataegus douglasii world distribution map, present in Canada, Estonia, and United States of America

Conservation status

Crataegus douglasii threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:723298-1
WFO ID wfo-0001003993
COL ID Z7XB
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Crataegus tennowana Mespilus douglasii Crataegus sanguinea Anthomeles douglasii Crataegus williamsii Crataegus punctata var. brevispina Crataegus sanguinea var. douglasii Mespilus sanguinea var. douglasii Crataegus douglasii var. douglasii Crataegus douglasii