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Vascular Plants of California
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Stellaria
CHICKWEED, 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 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.
Stellaria
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 5(6), free, 1.5--5.5 mm, lanceolate to ovate, glabrous to glandular-hairy, ribs in fruit 1--3, generally visible to prominent; 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: +- 112--150 species: worldwide. Etymology: (Latin: star, from flower shape) Note: Presence of papillae on leaf margins determined at 20×. Stellaria obtusa now treated in Engellaria.
Jepson eFlora Author: Ronald L. Hartman (deceased) & Richard K. Rabeler
Reference: Morton 2005 FNANM 5:96--114; Sharples & Tripp 2019 Syst Bot 44:857--876.
Unabridged Reference: Chinnappa & Morton 1991 Rhodora 93:129--135; Morton & Rabeler 1989 Canad J Bot 67:121--127; Morton 2005 FNANM 5:96--114
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Key to Stellaria

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Citation for this treatment: Ronald L. Hartman (deceased) & Richard K. Rabeler 2012, Stellaria, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=10852, accessed on April 24, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 24, 2024.