Cerastium semidecandrum — Details

Cerastium semidecandrum L.:
Brazil (South America)
Canada (North America)
United States (North America)

Forzza, R. C. & et al. 2010. 2010 Lista de espécies Flora do Brasil. http://floradobrasil.jbrj.gov.br/2010/. http://www.tropicos.org/Reference/100002289
Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Voss, E. G. 1985. Michigan Flora. Part II Dicots (Saururaceae-Cornaceae). Bull. Cranbrook Inst. Sci. 59. xix + 724. http://www.tropicos.org/Reference/1700
Gleason, H. A. 1968. The Choripetalous Dicotyledoneae. vol. 2. 655 pp. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York. http://www.tropicos.org/Reference/1704
Rolfsmeier, S. B., R. Kaul, M. M. Garabrandt & D. M. Sutherland. 1988. New and corrected floristic records for Nebraska. Trans. Nebraska Acad. Sci. 6: 115–121. http://www.tropicos.org/Reference/45694
Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill. http://www.tropicos.org/Reference/636
Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York. http://www.tropicos.org/Reference/1515
Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York. http://www.tropicos.org/Reference/1327

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National Distribution

Canada

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Comments

The very broad, scarious margins of the sepals and bracts distinguish this small, ephemeral species.

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Description

Plants annual, with slender taproot. Stems erect or ascending, branching at base, 1-20 cm, viscid, covered with short, dense, glandular and eglandular hairs; short axillary tufts of leaves absent. Leaves not marcescent, sessile but proximal leaves often spatulate; blade 5-18 × 2-5 mm, covered with short, white hairs; basal leaves with blade narrowly oblanceolate and ± spatulate, apex obtuse; cauline with blades ovate to elliptic-oblong, apex obtuse to acute. Inflorescences open, 3-30-flowered cymes; bracts lanceolate, with broad, scarious margins, glandular-pubescent. Pedicels curved at apex, often sharply angled at base, 3-8(-12) mm, 1-3 times as long as capsule, densely glandular-pubescent and viscid. Flowers: sepals narrowly lanceolate, 3-5 mm, margins broad, apex acute, glandular-pubescent; petals with unbranched veins, oblanceolate, 2-3 mm, shorter than sepals, apex notched; stamens 5; styles 5. Capsules cylindric, slightly curved, 4.5-6.5 mm, 1.5-2 times as long as sepals; teeth 10, erect, margins convolute. Seeds pale yellowish brown, 0.4-0.6 mm, finely tuberculate; testa not inflated. 2n = 36.

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Ecology

Habitat

Habitat & Distribution

Flowering spring. Common weed in dry, sandy, and gravelly places, roadsides and footpaths, parking lots, dunes; 0-300 m; introduced; B.C., N.S., Ont.; Ark., Conn., Fla., Ga., Idaho, Ill., Ind., Kans., La., Md., Mass., Mich., Mo., Nebr., N.J., N.Y., N.C., Ohio, Oreg., Pa., R.I., S.C., Wash., Wis.; Eurasia.

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Associations

Foodplant / parasite
hypophyllous telium of Melampsorella caryophyllacearum parasitises live leaf of Cerastium semidecandrum

Source: BioImages - the Virtual Fieldguide (UK)

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Cerastium semidecandrum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 2
Species With Barcodes: 1

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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNA - Not Applicable

United States

Rounded National Status Rank: NNA - Not Applicable

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NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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