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Vascular Plants of California
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Cerastium fontanum subsp. vulgare
COMMON MOUSE-EAR CHICKWEED


Higher Taxonomy
Family: CaryophyllaceaeView DescriptionDichotomous Key
Common Name: PINK FAMILY
Habit: Annual to perennial herb; rarely dioecious (Silene), taprooted or rhizome generally slender. Leaf: simple, generally opposite (subwhorled), entire, pairs at nodes often +- connected at bases; stipules generally 0; petiole generally 0. Inflorescence: generally cyme, generally open; flowers 1--many; involucre generally 0 (present in most Dianthus, Petrorhagia). Flower: generally bisexual, radial; hypanthium often present but obscure; sepals (4)5, +- free or fused into a tube, margins generally scarious, more so on inner 2 or not, tube generally not scarious, awns generally 0; petals (4)5 or 0, generally tapered to base (or with claw long, limb expanded), entire to 2--several-lobed, limb generally without scale-like appendages adaxially, generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries 0 or 5; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2--5 with 0 branches or 1 with 2--3 branches. Fruit: capsule or utricle (rarely +- dehiscent), generally sessile. Seed: appendage generally 0 (present in Moehringia).
Genera In Family: +- 100 genera, 3000 species: widespread, especially arctic, alpine, temperate northern hemisphere; some cultivated (Agrostemma, Arenaria, Atocion, Cerastium, Dianthus, Gypsophila, Lychnis, Sagina, Saponaria, Silene). Note: Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5--8. Taxa of Minuartia in TJM2 treated here in Cherleria and Sabulina; Pseudostellaria in Hartmaniella and Torreyostellaria; Vaccaria in Gypsophila; Velezia in Dianthus.
eFlora Treatment Author: Ronald L. Hartman (deceased) & Richard K. Rabeler, except as noted
Scientific Editor: Bruce G. Baldwin & Thomas J. Rosatti.
Genus: CerastiumView DescriptionDichotomous Key


Habit: Annual, perennial herb, erect to mat-forming; taproot or rhizomes present. Leaf: blade linear to ovate; vein 1; axillary leaf clusters generally 0. Inflorescence: terminal or axillary; flowers few to many, open to dense; pedicels 1--36+ mm. Flower: sepals (4)5, 3--12 mm, free, lanceolate to ovate, hairy to glandular-hairy, hairs generally not exceeding tip; petals 0 or (4)5, 2.5--15 mm, +- 2-lobed, white [purple tinged]; stamens (4,5)10; styles (4)5, 0.5--3.3 mm. Fruit: capsule, cylindric, often +- curved in upper 1/2; teeth (8)10, spreading to recurved. Seed: several to many, pale to red-brown.
Etymology: (Greek: horn, from fruit shape)
eFlora Treatment Author: Ronald L. Hartman (deceased) & Richard K. Rabeler
Reference: Morton 2005 FNANM 5:74--93
Cerastium fontanum Baumg. subsp. vulgare (Hartm.) Greuter & Burdet
NATURALIZED
Habit: Perennial herb, often flowering 1st year, appearing annual, 6--35 cm; hairs nonglandular. Stem: generally non-flowering (mat-forming) and flowering (+- erect). Leaf: on flower stem 8--25 mm, lanceolate to oblong, +- widely so. Inflorescence: bract margins generally scarious; pedicels in fruit 1--4 × sepals. Flower: flower parts 5; calyx 4.5--7 mm, hairy, ascending, scarious margin of most outer sepals 0.2--0.6 mm wide; petals 4--5 mm, 1.5 mm < to 0.5 mm > sepals. Fruit: 6.5--11 mm. Seed: 0.6--0.7 mm. Chromosomes: 2n=126,136, generally 144.
Ecology: Disturbed areas, grassy slopes, damp woodland, marshy ground; Elevation: < 2200 m. Bioregional Distribution: NW, CaRH, c SNF, n&c SNH, SCoRO?, SCo, SnBr, PR; Distribution Outside California: North America; native to Europe. Flowering Time: Spring
Synonyms: Cerastium fontanum subsp. triviale (Spenner) Jalas
Unabridged Note: 1 other subsp., in Greenland, native to Europe.
Jepson eFlora Author: Ronald L. Hartman (deceased) & Richard K. Rabeler
Reference: Morton 2005 FNANM 5:74--93
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Ronald L. Hartman (deceased) & Richard K. Rabeler 2012, Cerastium fontanum subsp. vulgare, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=49818, accessed on April 19, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 19, 2024.

Cerastium fontanum subsp. vulgare
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©2004 Steve Matson
Cerastium fontanum subsp. vulgare
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©2008 Steve Matson
Cerastium fontanum subsp. vulgare
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©2009 Barry Breckling
Cerastium fontanum subsp. vulgare
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©2003 Steve Matson
Cerastium fontanum subsp. vulgare
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©2013 Vernon Smith

More photos of Cerastium fontanum subsp. vulgare
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Geographic subdivisions for Cerastium fontanum subsp. vulgare:
NW, CaRH, c SNF, n&c SNH, SCoRO?, SCo, SnBr, PR
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).