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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

GERANIACEAE GERANIUM FAMILY

Carlos Aedo, except as noted


Annual, perennial herb, or ± woody, generally glandular-hairy. Leaf: simple to compound, basal and cauline; cauline alternate or opposite, stipules 2, ± on stem. Inflorescence: cyme or pseudo-umbel or 1–2-flowered. Flower: bisexual [unisexual], radial or ± bilateral; sepals 5, free, overlapping in bud; petals generally 5, free, generally with nectar glands at base; stamens generally 5,10[15]; staminodes scale-like or 0; ovary generally 5-lobed, upper part elongating into beak in fruit, chambers 5, placentas axile, style 1, stigmas 5, free, persistent in fruit. Fruit: septicidal [loculicidal], mericarps 5, dry, generally 1-seeded, each persistent on 1 of 5 linear segments of beak that separate from central column by curving or coiling upward.
6 genera, ± 750 species: temperate, ± tropics. Some cultivated for ornamental, perfume oils. [Bakker et al. 2006 Taxon 55:887–896] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Bakker, F. T., Breman, F., & Merckx, V. 2006. DNA sequence evolution in fast-evolving mitochondrial DNA nad1 exons in Geraniaceae and Plantaginaceae. Taxon 55: 887–896; Price & Palmer 1993 Ann Missouri Bot Gard 80:661–671]

Key to Geraniaceae

1. Flower ± bilateral; nectary 1, deeply embedded into receptacle; fertile stamens 1–7, united at base ..... PELARGONIUM

1' Flower radial (± bilateral); nectaries 5, on petal bases; fertile stamens 5 or 10, free

2. Fertile stamens generally 10; leaf palmately lobed or divided ..... GERANIUM

2' Fertile stamens generally 5; leaf generally pinnately lobed to compound

3. Staminodes 0; leaf simple, ± palmately lobed or not, veins ± palmate ..... CALIFORNIA

3' Staminodes 5, alternate stamens; leaf simple to pinnately compound, veins pinnate ..... ERODIUM

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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