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Stellaria umbellata
UMBELLATE STARWORT

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.
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: StellariaView DescriptionDichotomous Key

Common Name: CHICKWEED, STARWORT
Habit: Annual, perennial herb, erect to prostrate; taprooted, rhizomed. Stem: 4-angled or round. Leaf: petioled or not; linear to ovate, vein 1. Inflorescence: terminal or axillary, umbel-like or not, open to dense; flowers 1--many (if 1, axillary); peduncles, pedicels 0.8--50+ mm. Flower: sepals (4)5, free, 1.5--5.5 mm, lanceolate to ovate, glabrous to glandular-hairy; petals 0 or (1)5, 0.8--7 mm, 2-lobed > 1/2 to base; stamens 10 or fewer; styles 3(4--5 in Stellaria calycantha), 0.2--2.8 mm. Fruit: capsule, +- ovoid or spheric to cylindric-oblong; valves 6(8,10), ascending to recurved. Seed: several to many, brown to +- yellow, +- red, or purple-brown.
Species In Genus: +- 190 species: worldwide. Etymology: (Latin: star, from flower shape) Note: Presence of papillae on leaf margins determined at 20×.

Stellaria umbellata Kar. & Kir.
NATIVE
Habit: Perennial herb, prostrate to erect, 2--20 cm, glabrous; rhizome white. Stem: internodes glabrous. Leaf: +- evenly spaced; blade 5--20 mm, elliptic to ovate, margin not papillate, generally flat, shiny, glabrous. Inflorescence: terminal, generally umbel-like, few-(alpine) to many-flowered; bracts scarious; pedicels erect to spreading, in fruit spreading to reflexed. Flower: sepals 5, 1.5--2.5 mm, lanceolate to ovate, +- acute, margin widely scarious, ribs in fruit 3, weak; petals minute or 0. Seed: 0.6--0.7 mm, brown, +- smooth. Chromosomes: 2n=26.
Ecology: Moist meadows, rocky summits, streamsides; Elevation: 1800--2300 m. Bioregional Distribution: NCoRH, NCoRI, CaRH, SNH, Wrn; Distribution Outside California: to Alaska, Montana, New Mexico; northeastern Asia. Flowering Time: Summer
Unabridged Note: Expanded author citation: Stellaria umbellata Turcz. ex Kar. & Kir.
eFlora Treatment Author: Ronald L. Hartman & Richard K. Rabeler
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Citation for this treatment: Ronald L. Hartman & Richard K. Rabeler 2016. Stellaria umbellata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45516, accessed on February 14, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 14, 2016.


Stellaria umbellata
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© 2005 Steve Matson
Stellaria umbellata
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© 2005 Steve Matson
Stellaria umbellata
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© 2015 Barry Breckling
Stellaria umbellata
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© 2005 Steve Matson

More photos of Stellaria umbellata in CalPhotos


Geographic subdivisions for Stellaria umbellata:
NCoRH, NCoRI, CaRH, SNH, Wrn;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.