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Arenaria serpyllifolia var. serpyllifolia
THYMELEAF SANDWORT


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: ArenariaView DescriptionDichotomous Key


Common Name: SANDWORT
Habit: Annual, perennial herb, erect to mat-forming, taprooted. Leaf: not congested at base of flowering stems; blades narrowly lanceolate to ovate; veins 1--5. Inflorescence: terminal or axillary; flowers 1--many; peduncles, pedicels 1--50 mm. Flower: sepals 5, +- free, 1.5--4 mm, +- lanceolate to widely ovate, glabrous to glandular-hairy; petals 0 or 5, 1.5--6 mm, entire; stamens 10; styles 3, 0.5--2 mm. Fruit: capsule, ovoid to urn-shaped; teeth 6, ascending to recurved. Seed: 8--20, gray- or dark brown.
Species In Genus: 210 species: northern temperate, especially mountains, South America, Eurasia. Etymology: (Latin: sand, a common habitat) Note: Based in part on molecular evidence, most taxa moved to Eremogone.
Unabridged Note: Based in part on molecular evidence, taxa in 2 of McNeill's subgenera here included in Eremogone.
Reference: Hartman, Rabeler, & Utech 2005 FNANM 5:51--56
Unabridged Reference: McNeill 1980 Rhodora 82:495--502; Hartman, Rabeler, & Utech 2005 FNANM 5:51--56
Arenaria serpyllifolia L. var. serpyllifolia
NATURALIZED
Habit: Annual, tufted or stems trailing, green. Stem: 3--25 cm, dull; hairs minute, down-curved. Leaf: 2--7 mm, 1--4 mm wide, +- ovate, acute to acuminate; veins generally 3--5. Inflorescence: terminal; flowers few to many; pedicels 1--12 mm. Flower: sepals 2.5--3 mm, in fruit < 4 mm, narrowly acute to acuminate; petals 0.6--2.7 mm. Seed: 10--15, 0.5--0.6 mm, widely reniform, plump, +- gray; tubercles low, elongate. Chromosomes: 2n=40.
Ecology: Disturbed areas, sand, gravel bars, dry woodland; Elevation: 150--1800 m. Bioregional Distribution: NW, n&c SNF, SCo, MP; Distribution Outside California: +- North America; native to Europe. Flowering Time: Spring--summer
Synonyms: Arenaria serpyllifolia subsp. serpyllifolia
Unabridged Note: 1 other variety, in eastern United States, Australia, native to Europe, Asia, Africa.
Jepson eFlora Author: Ronald L. Hartman & Richard K. Rabeler
Reference: Hartman, Rabeler, & Utech 2005 FNANM 5:51--56
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Botanical illustration including Arenaria serpyllifolia var. serpyllifolia

botanical illustration including Arenaria serpyllifolia var. serpyllifolia

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Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2012, Arenaria serpyllifolia var. serpyllifolia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=75343, accessed on November 18, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on November 18, 2019.

Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2008 Steve Matson
Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2010 Vernon Smith
Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2008 Steve Matson
Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2008 Steve Matson
Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2006 Steve Matson
Arenaria serpyllifolia var. serpyllifolia
click for enlargement
© 2006 Steve Matson

More photos of Arenaria serpyllifolia var. serpyllifolia in CalPhotos



Geographic subdivisions for Arenaria serpyllifolia var. serpyllifolia:
NW, n&c SNF, SCo, MP
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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.