Jepson eFlora
Key to families | Table of families and genera

Key to Spergularia

View taxon page for Spergularia

1. Plant strongly perennial herb; stamens 7–10

2. Seeds 0.4–0.5 mm; calyx lobes 2.5–4 mm, in fruit < 5 mm; styles 0.4–0.6 mm ..... S. villosa

2' Seeds 0.6–0.9 mm; calyx lobes 4.5–7 mm, in fruit < 8 mm; styles 0.6–3 mm ..... S. macrotheca

3. Petals pink to rosy or blue; styles 0.5–1.2 mm ..... var. macrotheca

3' Petals white; styles 1.2–3 mm

4. Fruit 1.2–1.4 × calyx; styles 1.2–1.9 mm ..... var. leucantha

4' Fruit 0.8–1 × calyx; styles 2–3 mm ..... var. longistyla

1' Annual (Spergularia rubra, Spergularia media short-lived perennial herb); stamens 2–10

5. Seeds black, not papillate ..... S. atrosperma

5' Seeds light to dark brown or red-brown, if nearly black, seeds covered with gland-tipped papillae

6. Stamens 6–10

7. Seeds 0.8–1.1 mm, smooth, not papillate, generally winged; fruit (4.5)5.5–8 mm; plant stout, lower main stem generally 1–3 mm diam; leaves clearly fleshy ..... S. media var. media

7' Seeds 0.4–0.6 mm, roughened or variously sculptured, papillate, not winged; fruit 2.7–5.4 mm; plant ± delicate, lower main stem generally 0.3–1 mm diam; leaves barely to ± fleshy

8. Leaves generally 0–2 per axillary cluster, ± fleshy; seeds light brown; stipules generally 1.5–4.5 mm, mostly deltate, dull, white to tan, generally inconspicuous, tip acute to short-acuminate ..... S. bocconi

8' Leaves 2–4+ per axillary cluster, barely fleshy; seeds red-brown to dark brown; stipules generally 3.5–5 mm, lanceolate, shiny, white, conspicuous, tip ± long-acuminate ..... S. rubra

6' Stamens 2–5

9. Seeds 0.9–1.1 mm ..... S. canadensis var. occidentalis

9' Seeds 0.3–0.7(0.8) mm

10. Inflorescence glandular-hairy, 1–3+ × compound or flowers 1 in axils; fruit 2.8–6.4 mm; calyx lobes 2.5–4.5 mm, in fruit < 4.8 mm; seeds 0.5–0.7(0.8) mm ..... S. marina

10' Inflorescence glabrous, generally 4–7+ × compound; fruit 1.4–2.6 mm; calyx lobes 0.9–1.6 mm, in fruit < 2 mm; seeds 0.3–0.4 mm ..... S. platensis var. platensis

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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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