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Vascular Plants of California
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Cerastium glomeratum
STICKY 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 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: 83 or 89 genera, 3000 species: widespread, especially arctic, alpine, temperate northern hemisphere; some cultivated (Agrostemma, Arenaria, Cerastium, Dianthus, Gypsophila, Lychnis, Sagina, Saponaria, Silene, Vaccaria). Note: Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5--8.
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: CerastiumView DescriptionDichotomous Key


Common Name: MOUSE-EAR CHICKWEED
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.
Species In Genus: +- 180 species: worldwide, especially northern temperate. Etymology: (Greek: horn, from fruit shape)
Reference: Morton 2005 FNANM 5:74--93
Cerastium glomeratum Thuill.
NATURALIZED
Habit: Annual, 3--40 cm, hairy (+- glandular). Stem: ascending to erect. Leaf: on flower stem 5--35 mm, lanceolate or oblanceolate to ovate. Inflorescence: bracts not scarious; pedicels generally 0.5--0.9 × sepals (except lowest). Flower: flower parts 5; calyx 3.5--5 mm, glandular-hairy, with some hairs exceeding tip by 0.2--0.8 mm, scarious margin of most outer sepals < 0.1 mm wide; petals 3--5 mm, 1.5 mm < to 1 mm > sepals, often 0 on lateral branches. Fruit: 3.5--8 mm. Seed: 0.4--0.6 mm. Chromosomes: 2n=72.
Ecology: Dry hillsides, grassland, chaparral, disturbed areas; Elevation: < 1600 m. Bioregional Distribution: CA-FP (exc s SNH), MP, DSon; Distribution Outside California: to Alaska, eastern North America (except +- north-central); native to Europe. Flowering Time: Spring
Jepson eFlora Author: Ronald L. Hartman & Richard K. Rabeler
Reference: Morton 2005 FNANM 5:74--93
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Previous taxon: Cerastium fontanum subsp. vulgare
Next taxon: Cerastium viride

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Botanical illustration including Cerastium glomeratum

botanical illustration including Cerastium glomeratum

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Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2012, Cerastium glomeratum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=18675, accessed on July 22, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on July 22, 2019.

Cerastium glomeratum
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© 2016 Keir Morse
Cerastium glomeratum
click for enlargement
© 2016 Keir Morse
Cerastium glomeratum
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© 2019 Neal Kramer
Cerastium glomeratum
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© 2009 Barry Breckling
Cerastium glomeratum
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© 2016 Keir Morse
Cerastium glomeratum
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© 2004 Carol W. Witham

More photos of Cerastium glomeratum in CalPhotos



Geographic subdivisions for Cerastium glomeratum:
CA-FP (exc s SNH), MP, DSon
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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).





 

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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.