Jepson eFlora
Key to families | Table of families and genera

Key to Crataegus

View taxon page for Crataegus

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Short-shoot leaves deeply lobed, veined to sinuses; fruit red to deep red ..... C. monogyna

1' Short-shoot leaves unlobed to shallowly lobed, not veined to sinuses; fruit deep purple to black

2. Stamens ± 20; short-shoot leaves unlobed to shallowly lobed; thorns 8–12 mm ..... C. gaylussacia

2' Stamens ± 10; short-shoot leaves generally shallowly lobed; thorns 15–23 mm

3. Inflorescence hairy; thorns 18–23 mm ..... C. castlegarensis

3' Inflorescence glabrous; thorns 15–18 mm ..... C. douglasii


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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