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Crataegus monogyna

(Singleseed Hawthorn)

Common Names

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Click on the language to view common names.

Common Names in English:

English Hawthorn, May, Oneseed Hawthorn, Quickthorn, Singleseed Hawthorn, Whitethorn

Common Names in Spanish:

Espino Albar

Description

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Genus Crataegus

Shrubs , subshrubs , or small trees , deciduous, rarely evergreen , armed , rarely unarmed ; buds ovoid or subglobose. Leaves simple , stipulate , venation craspedodromous , margin serrate and lobed or partite, rarely entire . Inflorescences corymbose , sometimes flowers solitary. Hypanthium campanulate . Sepals 5. Petals 5, white, rarely pinkish. Stamens 5-25; carpels 1-5, connate , but free apically. Ovary inferior or semi-inferior, with 2 ovules per locule, but one rudimentary . Fruit a pome, with persistent sepals at apex; carpels bony when mature , each locule with 1 seed; seed erect , cotyledons plano-convex .

At least 1000 species: N temperate regions , especially abundant in North America; 18 species (ten endemic) in China.[1]

Physical Description

ID Features: Long thorns along stems. A medium-sized deciduous tree. 20' to 30' tall. One seed on fruit. Serrated lobe tips. Broad, rounded tree. Simple, lobed leaves.

Habit: A medium-sized deciduous tree with a densely branched, rounded crown. Branches tend to be slightly pendulous.

Flowers: Small, white flowers. Borne in corymbs. Blooms in May. Short bloom time only 7 to 10 days. • Bloom Period: April, May. • Flower Color: near white, pink, white

Seeds: Fruit: A red pome with one seed. Ripens in September. Showy. Birds eat fruit.

Foliage: Summer foliage: Simple , lobed leaves. Alternate leaf arrangement . Leaves serrated at lobe tips . Rich green leaf color. 3" long leaves. • Fall foliage: Not ornamentally important. Moderately showy.

Size/Age/Growth

Growth Rate: Slow. • Size: 20' to 30' tall.

Landscaping

Landscape Uses: Specimen tree . Screen border . Prune into hedge . • Liabilities: Under used. Hard to find. Powdery mildew . Leaf spot. Thorns . Tends to have many pest problems similar to apple trees .

Habitat

Hardy to zone 4.

Typically found at an altitude of 0 to 2,453 meters (0 to 8,048 feet).[2]

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Easy to grow. Prefers moist, fertile soil. Prune tolerant . Full sun is best.

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b. (map)

Taxonomy

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Unambiguous Synonyms

  1. Crataegus apiifolia Medik.
  2. Crataegus dissecta Borkh.
  3. Crataegus monogyna forma dissecta (Borkh.) Buia in Savul.
  4. Crataegus monogyna forma genuina Posp.
  5. Crataegus monogyna var. dissecta (Borkh.) Gost. -Jak.
  6. Crataegus monogyna var. typica Beck
  7. Crataegus oxyacantha monogyna (Jacq.) Rouy & E. G. Camus
  8. Crataegus oxyacantha var. discolor H. Lév.
  9. Crataegus oxyacantha var. monogyna (Jacq.) Loudon
  10. Mespilus crataegus Borkh.
  11. Mespilus monogyna (Jacq.) All.
  12. Mespilus monogyna var. genuina (Posp.) Asch. & Graebn.
  13. Oxyacantha apiifolia (Medik.) M. Roem.
  14. Oxyacantha monogyna (Jacq.) M. Roem.

Notes

Publishing author : Pojark. Publication : in Not. Syst. Herb. Inst. Bot. Acad. Sci. URSS, xx. 188 (1960). Publishing author: Cinovskis Publication: Boyaryshniki Pribaltiki: 111 (1971).An accepted name in the RHS Horticultural Database.

Name Status: Accepted Name. Latest taxonomic scrutiny: –

Place of publication: Fl. austriac. 3:50, t. 292, fig. 1. 1775

Name verified on 04-Oct-1999 by ARS Systematic Botanists. Last updated: 04-Aug-2006

Similar Species

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Members of the genus Crataegus

There are approximately 2199 species in this genus. Here are just 100 of them:

C. abbreviata · C. abdita · C. aberrans · C. abjecta · C. aboriginum · C. abstrusa · C. academiae · C. acanea · C. acanthacolonensis · C. accincta · C. acerba · C. acerifolia · C. acerifolia var. sera · C. acuminata · C. acuticarpa · C. acutifolia · C. acutiloba · C. acutiserrata · C. admiranda · C. adunca · C. adusta · C. advena · C. aemula (Rome Hawthorn) · C. aestivalis (Apple Hawthorn) · C. aestivalis f. luculenta · C. aestivalis forma luculenta · C. aestivalis var. cerasoides (Eastern Mayhaw) · C. aestivalis var. dormonae (Eastern Mayhaw) · C. aestivalis var. lucida · C. aestivalis var. maloides (Eastern Mayhaw) · C. affinis · C. agaia · C. agrestina · C. aguilaris · C. alabamensis · C. alachuana · C. alachuaniformis · C. alacris · C. albanica · C. albanthera · C. albemarlensis · C. albicans · C. albicera · C. algens · C. aliena · C. allecta · C. alleghaniensis · C. allemanniensis · C. alma · C. almaatensis · C. alnifolia · C. alnifolius · C. alnorum · C. alpestris · C. alpina · C. alpista · C. altaica · C. altrix · C. amabilis · C. amara · C. ambigens · C. ambigua (Russian Hawthorn) · C. ambigua ambigua · C. ambigua subsp. transcaspica · C. ambigua transcaspica · C. ambitiosa (Grand Rapids Hawthorn) · C. ambrosia · C. amelanchier · C. americana · C. amica · C. amicalis · C. amicta · C. aminii · C. amnicola · C. amoena · C. ampla · C. ampliata · C. amplifica · C. amygdaliformis · C. anamesa (Fort Bend Hawthorn) · C. ancisa (Mississippi Hawthorn) · C. angulata · C. angusta · C. angustata · C. angustifolia · C. angustisepala · C. anisophylla · C. annosa (Phoenix City Hawthorn) · C. anomala (Anomalous Hawthorn) · C. antheina · C. antimima · C. antiplasta · C. aperta · C. apiifolia · C. apiomorpha (Fort Sheridan Hawthorn) · C. apiomorpha var. cyanophylla · C. aprica · C. aquilonaris · C. araioclada · C. araneosa

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal January 29, 2008:

Identifiers

Footnotes

  1. Ku Tsue-chih, Stephen A. Spongberg "Crataegus". in Flora of China Vol. 9 Page 111. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Mean = 258.150 meters (846.949 feet), Standard Deviation = 332.440 based on 5,302 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-05-14