Jepson eFlora
Key to families | Table of families and genera

Key to Puccinellia

View taxon page for Puccinellia

1. Annual; remains of previous year's growth not present

2. Lowest lemma 1.8–2.2 mm; lemma tip obtuse to truncate ..... P. parishii

2' Lowest lemma 2.5–4 mm; lemma tip acute ..... P. simplex

1' Perennial herb; previous year's leaves persistent

3. Spikelet stalk glabrous to sparsely scabrous

4. Lemma margin near tip entire or sparsely finely scabrous at 10×; anthers of lowest floret 0.5–1.2 mm; coastal habitats, North Coast ..... P. pumila

4' Lemma margin near tip scabrous-serrate at 10×; anthers of lowest floret 0.4–2 mm; coastal and inland habitats

5. Anthers of lowest floret 1.5–2 mm; inland habitats, Klamath Ranges (Shasta Co.) ..... P. howellii

5' Anthers of lowest floret 0.5–1.4 mm; coastal habitats, North Coast ..... P. nutkaensis (2)

3' Spikelet stalk uniformly scabrous

6. Lowest lemma 1.5–2(2.2) mm; lemma tip obtuse to truncate; lower inflorescence branches spreading to reflexed in fruit; anthers of lowest floret 0.4–0.8 mm ..... P. distans

6' Lowest lemma 2–5 mm; lemma tip acute or acuminate to obtuse; lower inflorescence branches erect to reflexed in fruit; anthers of lowest floret 0.5–2 mm

7. Cauline leaf blade inrolled, 1–2 mm wide when flat; lemma tip acute, margin near tip generally entire, sometimes sparsely finely scabrous or scabrous-serrate at 10× anthers of lowest floret 1–2 mm ..... P. lemmonii

7' Cauline leaf blade flat to inrolled, 1–6 mm wide when flat; lemma tip acute to obtuse, margin near tip scabrous-serrate at 10× anthers of lowest floret 0.5–2 mm

8. Cauline leaf blade 1.5–6 mm when flat; lowest lemma (2.2)3–4.5(5) mm; coastal habitats, North Coast ..... P. nutkaensis (2)

8' Cauline leaf blade 1–4 mm when flat; lowest lemma (2)2.2–3(3.5) mm; generally inland habitats, occasionally coastal ..... P. nuttalliana

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