Sagina decumbens subsp. decumbens

Common names: Sagine décombante
IllustratedEndemic
Synonyms: Sagina decumbens var. smithii (A. Gray) S. Watson
Treatment appears in FNA Volume 5. Treatment on page 145. Mentioned on page 146.
Revision as of 22:10, 5 November 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Leaves: basal rosette forming in winter annual plants, absent later. Sepals ovate, hyaline margins or apex frequently purple. Seeds light tan, with delicate reticulate ridge pattern (50–80×), smooth or pebbled to strongly tuberculate. 2n = 36.


Phenology: Flowering spring–early summer.
Habitat: Moist or dryish sandy places, field margins, open pine woods, paths, roadsides, sidewalk cracks, lawns
Elevation: 0-500 m

Distribution

V5 297-distribution-map.gif

Que., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Vt., Va.

Discussion

Specimens of subsp. decumbens from Alberta, New Brunswick, Saskatchewan, and Arizona represent historical collections that apparently did not persist.

Subspecies decumbens is extremely variable. A slender, nearly apetalous variation with a greater frequency of 4-merous flowers has previously been recognized as var. smithii; the range of variability is continuous and it seems best to consider the material as a single taxon.

Selected References

None.

Lower Taxa

None.
Garrett E. Crow +
(Elliott) Torrey & A. Gray +
Spergella decumbens +
Sagine décombante +
Que. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Vt. +  and Va. +
0-500 m +
Moist or dryish sandy places, field margins, open pine woods, paths, roadsides, sidewalk cracks, lawns +
Flowering spring–early summer. +
Fl. N. Amer. +
Illustrated +  and Endemic +
Sagina decumbens var. smithii +
Sagina decumbens subsp. decumbens +
Sagina decumbens +
subspecies +