Cerastium brachypetalum

Persoon

Syn. Pl. 1: 520. 1805

Common names: Gray mouse-ear chickweed
Synonyms: Cerastium brachypetalum subsp. tauricum (Sprengel) Murbeck Cerastium tauricum
Treatment appears in FNA Volume 5. Treatment on page 82. Mentioned on page 75, 83, 85.
Plants annual. Stems erect, simple or branched at base, 5.5–30 cm, shaggy, hairs silvery, spreading-ascending; small axillary tufts of leaves absent. Leaves not marces-cent; blade 4–15(–20) × 1.5–5(–7) mm, pubescence of long, glandular and/or eglandular hairs; basal ± crowded, blade oblanceolate, spatulate, apex obtuse; cauline sessile, blade lanceolate or elliptic, apex acute. Inflorescences lax, dichasiate, 3–30-flowered cymes; bracts herbaceous, lanceolate, densely pubescent, with long, ascending, glandular or eglandular hairs. Pedicels erect or ascending, bent distally in fruit, 6–15 mm, longer than capsule, shaggy, glandular or eglandular. Flowers: sepals lanceolate, 4–4.5 mm, foliaceous, with or without narrow margins, densely pubescent, hairs exceeding sepal tips; petals oblanceolate, 2–3 mm, ca. 0.5 times as long as sepals, apex 2-fid, sparsely ciliate proximally; stamens 10, with few long hairs near filament base; styles 5. Capsules cylindric, slightly curved near apex, 5–7 mm, ca. 1.5 times as long as sepals; teeth 10, erect, margins convolute. Seeds pale brown, 0.5 mm diam., acutely tuberculate; testa not inflated. 2n = 72 (Europe), 88, 90.

Phenology: Flowering spring.
Habitat: Dry, sandy places, roadsides, arable land, disturbed, open areas
Elevation: 0-400 m

Distribution

V5 168-distribution-map.gif

Ala., Ark., Fla., Ga., Idaho, Ill., Ind., Kans., Ky., Miss., Mo., N.Y., N.C., Ohio, Okla., Oreg., Pa., S.C., Tenn., Tex., Va., W.Va., Eurasia.

Discussion

The wholly herbaceous bracts of Cerastium brachypetalum distinguish it from C. fontanum subsp. vulgare, C. semidecandrum, and C. pumilum; the ciliate petal and filament bases distinguish it from C. diffusum and C. glomeratum. Cerastium brachypetalum differs from all those species in the long, silvery hairs that give it a grayish appearance. In Europe C. brachypetalum is more variable and eight subspecies have been recognized, two of which—subsp. brachypetalum and subsp. tauricum—occur in North America. However, they differ only in the absence or presence of glandular hairs, an insufficient distinction for recognition at the subspecific level.

Selected References

None.

Lower Taxa

None.

AuthorJohn K. Morton +
AuthorityPersoon +
Common nameGray mouse-ear chickweed +
DistributionAla. +, Ark. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Kans. +, Ky. +, Miss. +, Mo. +, N.Y. +, N.C. +, Ohio +, Okla. +, Oreg. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +, W.Va. + and Eurasia. +
Elevation0-400 m +
HabitatDry, sandy places, roadsides, arable land, disturbed, open areas +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
Introducedtrue +
PhenologyFlowering spring. +
Publication titleSyn. Pl. +
Publication year1805 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V5/V5 168.xml +
SynonymsCerastium brachypetalum subsp. tauricum + and Cerastium tauricum +
Taxon familyCaryophyllaceae +
Taxon nameCerastium brachypetalum +
Taxon parentCerastium +
Taxon rankspecies +
VolumeVolume 5 +