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e-Key v<span id="jodit_selection_marker_1697630639657_5732602264536173" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>3 - *Crat<span id="jodit_selection_marker_1697630639657_8966767220476013" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>aegus

Rosaceae - Maloideae - *Crataegus L.

Description:

Small, much-branched trees or shrubs, mostly deciduous, often spiny
Leaves alternate, simple, margins entire, serrate, pinnatifid or variously lobed, petiolate; stipules usually conspicuous, serrate-laciniate, lanceolate, often leaf-like, caducous
Inflorescences corymbose or flowers rarely solitary; bracts and bracteoles present, caducous
Flowers bisexual
Calyx: tube campanulate or urceolate, mouth contracted; lobes 5, short, ± triangular; epicalyx 0
Petals 5, orbicular, inserted on throat of calyx tube, white, pink, or rarely red
Stamens 5-25; filaments thread-like
Ovary inferior, 1- or 2(3-5)-locular, 1-5-celled; carpels connate at least at base and wholly or partly adnate to calyx tube; ovules (1)2-5 in each carpel, pendulous; styles free
Fruit a small, globose or ovoid, red, yellow or black berry with umbilical disc and minute, marcescent lobes on top, usually with juicy flesh and 1-3, rarely 5, bony, 1- or 2-seeded pyrenes
x = 16, 17 (polyploidy)

Nomenclature:

*Crataegus L.
- Linnaeus: 475 (1753)
- Linnaeus: 213 (1754)
- Jussieu: 335 (1789)
- Lindley: 105 (1820)
- Candolle: 626 (1825)
- Endlicher: 1239 (1840)
- Hooker: 626 (1865)
- Diapulis: 49, 68 (1933)
- Pojarkova: 437 (1939)
- Franco: 73 (1968)
- Zohary: 19 (1972)
- Bailey & Bailey: 329 (1977)
- Meikle: 635 (1977)
- Knees & Warwick: 439 (1995)

Distribution & Notes:

Global: Species ± 180, in north temperate regions of the Old World and ± 900 in North America
Southern Africa: Species 2, escapes from cultivation: *Crataegus x lavallei Henrique and *C. monogyna Jacq., with records from Free State and Eastern Cape

References:

BAILEY, L.H. & BAILEY, E.Z. 1977. Cotoneaster, Crataegus, Cydonia, Duchesnea, Fragaria, Potentilla, Prunus, Pyracantha, Pyrus, Rosa & Sanguisorba (= Poterium). Hortus Third, a concise dictionary of plants cultivated in the United States and Canada. Macmillan, New York
CANDOLLE, A.-P. DE. 1825. Rosaceae. Prodromus 2. Treuttel & Würtz, Paris
DIAPULIS, C. 1933. Beiträge zur Kenntnis der orientalischen Pomaceen II. Feddes Repertorium 34
ENDLICHER, S.L. 1840. Pomaceae-Rosaceae. Order AMYGDALEAE. Genera plantarum secundum ordines naturales disposita 2. Beck, Vienna
FRANCO, J. DO AMARAL. 1968. Rosaceae (Crataegus). Flora europaea 2
HOOKER, J.D. 1865. Rosaceae. In G. Bentham & J. D. Hooker, Genera plantarum 1. Lovell Reeve & Co., London
JUSSIEU, A.L. DE. 1789. Rosaceae, les Rosacées. Genera plantarum secundum ordines naturales disposita. Herissant & Barrois, Paris
KNEES, S.G. & WARWICK, M.C. 1995. Crataegus. The European garden flora 4. Cambridge University Press, Cambridge
LINDLEY, J. 1820. Observations on the natural group of plants called Pomaceae. The Transactions of the Linnean Society of London 13
LINNAEUS, C. 1753. Species plantarum, edn 1. Laurentius Salvius, Stockholm
LINNAEUS, C. 1754. Genera plantarum, edn 5. Laurentius Salvius, Stockholm
MEIKLE, R.D. 1977. Rosaceae. Flora of Cyprus 1
POJARKOVA, A.J. 1939. Contribution to the knowledge of the hawthorns of the Old World. Botanicheskii Zhurnal 24
ZOHARY, M. 1972. Rosaceae. Flora Palaestina 2

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