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Vascular Plants of California
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Eremogone congesta var. congesta

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: EremogoneView DescriptionDichotomous Key

Common Name: SANDWORT
Habit: Perennial herb, prostrate (non-flowering stems) or ascending to erect to mat-forming, taprooted. Leaf: needle-like to narrowly linear; vein 1. Inflorescence: terminal, open to head- or umbel-like; flowers 1--many; peduncles, pedicels 0--55 mm. Flower: hypanthium present; sepals 5, +- free, 3--7.2 mm, lance-linear to ovate, glabrous to glandular-hairy; petals 5, 2--18 mm, entire or +- notched; stamens on hypanthium; ovary +- superior, styles 3, 2.5--3 mm. Fruit: capsule, ovoid to urn-shaped; teeth 6, ascending to recurved. Seed: 1--9, +- gray, dark brown, red-brown, yellow-tan, black-purple, or +- black.
Species In Genus: 90 species: northern temperate, especially western North America, Eurasia. Etymology: (Greek: solitary or deserted + seed, allusion uncertain) Note: Based in part on molecular evidence (Harbaugh et al. 2010 Intl J Plant Sci 171:185--198), 2 subgenera of Arenaria treated here as Eremogone.
Reference: Hartman & Rabeler 2004 Sida 21:237--241
Unabridged Reference: Hartman, Rabeler, & Utech 2005 FNANM 5:56--70
Species: Eremogone congestaView Description 

Habit: Perennial herb, tufted, +- green. Stem: 8--40 cm, +- dull, often glandular-hairy. Leaf: 10--80 mm, 0.5--2 mm wide, +- fleshy or not, sharply acute to spine-tipped, vein 1. Inflorescence: terminal, generally head- or umbel-like; flowers few to many, dense to +- open; pedicels generally < 7 mm. Flower: sepals 3--6 mm, in fruit < 6.5 mm, rounded to acute; petals 5--8 mm; nectaries < 0.2 mm, rounded. Fruit: 3.5--6 mm. Seed: 4--8, 1.4--3 mm, widely elliptic to ovate, compressed, red-brown; tubercles low, rounded, often elongate.
Note: Varieties often intergrade.
Unabridged Note: 3 other varieties, extending sp. range to Alberta, Saskatchewan.
Eremogone congesta (Nutt.) Ikonn. var. congesta
Leaf: generally 30--80 mm, 0.5--1 mm wide. Inflorescence: dense; bracts closely enveloping sepals; pedicels 0--0.2(2) mm. Flower: sepals 3.5--4.2 mm, obtuse. Chromosomes: 2n=22.
Ecology: Gravelly or sandy soil, in open; Elevation: 1300--2000 m. Bioregional Distribution: NCoRH, CaRH, n SNH, Wrn; Distribution Outside California: to Washington, Montana, Colorado. Flowering Time: Jun--Aug
Synonyms: Arenaria congesta var. congesta
Jepson eFlora Author: Ronald L. Hartman & Richard K. Rabeler
Reference: Hartman & Rabeler 2004 Sida 21:237--241
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Eremogone congesta var. charlestonensis
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Botanical illustration including Eremogone congesta var. congesta

botanical illustration including Eremogone congesta var. congesta


Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2012, Eremogone congesta var. congesta, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on June 26, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora,, accessed on June 26, 2022.

Eremogone congesta var. congesta
click for enlargement
© 2011 Steve Matson
Eremogone congesta var. congesta
click for enlargement
© 2011 Steve Matson
Eremogone congesta var. congesta
click for enlargement
© 2011 Steve Matson

More photos of Eremogone congesta var. congesta in CalPhotos

Geographic subdivisions for Eremogone congesta var. congesta:
NCoRH, CaRH, n SNH, Wrn
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2. County and Jepson Region polygons can be turned off and on using the check boxes.
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.
View all CCH records
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.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

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).