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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.

 

FRAGARIA STRAWBERRY

Daniel Potter & Barbara Ertter


Perennial herb, ± nonglandular, rhizomes short, stolons leafless. Leaf: basal, 1-ternately compound; leaflet teeth generally entire. Inflorescence: cyme, ± umbel-like, open, 1–several-flowered; pedicels recurved in fruit, bractlets 0. Flower: hypanthium shallow, bractlets 5, narrower than sepals; sepals, petals ± obovate, generally white; stamens 20–35, filaments ± flat, pollen sac 1, horseshoe-shaped; pistils many, ovaries superior, jointed to stout style on side. Fruit: achenes many on enlarged, fleshy, red receptacle.
± 20 species: generally northern temperate. (Latin: fragrant) [Hancock et al. 2004 Canad J Bot 82:1632–1644] Species intergrade.
Unabridged note: Characters include calyx orientation, fruit size used to define subspecies despite evident lack of taxonomic value.

Key to Fragaria

1. Leaf thick, leathery, central leaflet stalk 1–10 mm; petals (8)10–18 mm; achenes 1.5–2 mm — coastal, < 200 m ..... F. chiloensis

1' Leaf thin, not leathery, central leaflet stalk 1–3 mm; petals 4–9 mm; achenes ± 1.5 mm

2. Central leaflet teeth generally 12–21, below and above middle, central tooth < to > adjacent; leaflets sparsely hairy adaxially; hypanthium bractlets often 2-lobed; inflorescence often > leaves; < 2000 m ..... F. vesca

2' Central leaflet teeth generally < 13, above middle, central tooth << adjacent; leaflets generally glabrous adaxially; hypanthium bractlets unlobed; inflorescence < leaves; generally 1200–3300 m ..... F. virginiana

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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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