Cerastium dubium

(Bastard) Guépin

Fl. Maine et Loire ed. 2, 1: 267. 1838

Common names: Anomalous mouse-ear chickweed
Basionyms: Stellaria dubia Bastard Suppl. Fl. Maine-et-Loire, 24. 1812
Synonyms: Cerastium anomalum Waldstein & Kitaibel Dichodon viscidum (M. Bieberstein) Holub
Treatment appears in FNA Volume 5. Treatment on page 85. Mentioned on page 75.
Plants annual, taprooted. Stems erect, many-branched from base, 10–40 cm, minutely viscid-glandular; small axillary tufts of leaves usually absent. Leaves not marcescent, distal sessile, proximal spatulate; blade linear or linear- lanceolate to linear-oblong, 10–30 × 1–4 mm, apex obtuse to subacute, glabrous or sparsely and minutely viscid-glandular. Inflorescences lax, 3–21(–30)-flowered cymes; bracts narrowly lanceolate, glandular-pubescent. Pedicels erect, slender, 2–15 mm, 0.5–3 times as long as sepals, glandular-puberulent Flowers: sepals ovate-lanceolate, 5–6 mm, margins narrow, apex acute to obtuse, minutely viscid-glandular; petals oblanceolate, 5–8 mm, 1.5 times as long as sepals, apex 2-fid; stamens 10; styles 3(–4). Capsules oblong-ovoid, straight, 8–11 mm, ca. 2 times as long as sepals; teeth 6, occasionally 8, erect to spreading, margins convolute. Seeds pale brown, ovate, 0.6 mm diam., tuberculate; testa not inflated. 2n = 36, 38.

Phenology: Flowering spring.
Habitat: Alien weed of cultivated land
Elevation: 200-800 m

Distribution

V5 173-distribution-map.gif

Ark., Idaho, Ill., Ind., Kans., Ky., Miss., Ohio, Oreg., Tenn., Va., Wash., s Europe, Asia.

Discussion

First collected in North America in 1966 in Washington, Cerastium dubium has now been gathered from many widely scattered sites, and appears to be spreading rapidly.

Lower Taxa

None.

Facts about "Cerastium dubium"
AuthorJohn K. Morton +
Authority(Bastard) Guépin +
BasionymsStellaria dubia +
Common nameAnomalous mouse-ear chickweed +
DistributionArk. +, Idaho +, Ill. +, Ind. +, Kans. +, Ky. +, Miss. +, Ohio +, Oreg. +, Tenn. +, Va. +, Wash. +, s Europe + and Asia. +
Elevation200-800 m +
HabitatAlien weed of cultivated land +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
Introducedtrue +
PhenologyFlowering spring. +
Publication titleFl. Maine et Loire ed. +
Publication year1838 +
Referenceshildneck1986a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V5/V5 173.xml +
SynonymsCerastium anomalum + and Dichodon viscidum +
Taxon familyCaryophyllaceae +
Taxon nameCerastium dubium +
Taxon parentCerastium +
Taxon rankspecies +
VolumeVolume 5 +