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FNA | Family List | FNA Vol. 5 | Caryophyllaceae | Sagina

7. Sagina decumbens (Elliott) Torrey & A. Gray, Fl. N. Amer. 1: 177. 1838.

Spergella decumbens Elliott, Sketch Bot. S. Carolina 1: 523. 1821

Plants annual, glabrous or glan-dular-pubescent. Stems ascending or decumbent, frequently purple tinged, few- to many-branched, filiform. Leaves: axillary fascicles absent; basal rosette quickly de-ciduous; proximal cauline leaves connate basally, not appearing inflated, blade frequently purple tinged, linear, 4-23 mm, not fleshy, base never ciliate, margins conspicuously hyaline basally, apex apiculate, glabrous, distal blades becoming subulate and shorter toward apex, 1-5 mm, apex apiculate, glabrous. Pedicels filiform, glabrous or glandular-pubescent. Flowers terminal or often axillary, 5-merous, rarely 4-merous and then apetalous; calyx base glabrous or glandular-pubescent, often sparsely so; sepals ovate to orbiculate, (1-)1.5-2(-3) mm, hyaline margins conspicuous, margins or apex frequently purple, apex acute to rounded, glabrous or glandular-pubescent at calyx base, remaining appressed to capsule; petals elliptic, (1-)1.5-2(-2.3) mm, slightly longer than sepals at anthesis, equaling or shorter than sepals during capsule development; stamens 5 or 10, occasionally 8. Capsules 2-3(-3.5) mm, longer than sepals, dehiscing to 2 capsule length or less. Seeds light tan to light brown, obliquely triangular with abaxial groove, (0.2-)0.3-1.4 mm, smooth or pebbled to strongly tuberculate, protrusions sometimes borne on delicate ridges, ridges forming reticulate pattern (50-80×).

Subspecies 2 (2 in the flora): North America (including n Mexico).

1 Seeds light tan, smooth or pebbled to strongly tuberculate, protrusions borne on delicate ridges, ridges forming reticulate pattern (50-80×); chiefly se United States   7a subsp. decumbens
+ Seeds light brown, usually smooth to slightly pebbled, never with reticulate ridge pattern; Pacific Coast region   7b subsp. occidentalis


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