Jepson eFlora
Key to families | Table of families and genera

Key to Alopecurus

View taxon page for Alopecurus

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

1. Spikelets except awns > 4 mm

2. Perennial herb; stem generally > 4.5 dm; glumes, lemma acute ..... A. pratensis

2' Annual; stem generally < 4.5 dm; glumes, lemma acute or obtuse

3. Glumes ciliate on keel near base, glabrous on lateral veins, winged and appearing asymmetrical; anthers > 3.5 mm; inflorescence generally > 7 cm, tapered at both ends; leaf sheaths not inflated ..... A. myosuroides

3' Glumes ciliate on all veins, not winged; anthers < 1.5 mm; inflorescence < 6.5 cm, not tapered; upper leaf sheaths conspicuously inflated ..... A. saccatus (2)

1' Spikelets except awns < 4 mm

4. Awn straight, > lemma by 0–2 mm; perennial herb ..... A. aequalis

5. Inflorescence 3–6 mm wide; glumes 1.8–3 mm; awn > lemma by < 1 mm; anthers 0.5–0.9 mm ..... var. aequalis

5' Inflorescence 4–9 mm wide; glumes 2.7–3.7 mm; awn > lemma by 1–2.5 mm; anthers 0.7–1.2 mm ..... var. sonomensis

4' Awn bent, > lemma by 1.5–5 mm; perennial herb or annual

6. Spikelets > 3 mm; upper leaf sheath conspicuously inflated; awn > lemma by 3–5 mm ..... A. saccatus (2)

6' Spikelets generally < 3 mm; upper leaf sheath not inflated; awn > lemma by 1.5–3.5 mm

7. Annual; anthers < 1 mm ..... A. carolinianus

7' Perennial herb; anthers 1.2–2 mm ..... A. geniculatus

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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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