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CARYOPHYLLACEAE PINK FAMILY

Ronald L. Hartman & Richard K. Rabeler, except as noted

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).
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). [Rabeler & Hartman 2005 FNANM 5:3–215] Apetalous Caryophyllaceae can also be keyed in Rabeler & Hartman 2005 FNANM 5:5–8. —Scientific Editor: Thomas J. Rosatti.

Key to Caryophyllaceae

ARENARIA SANDWORT
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.
210 species: northern temperate, especially mountains, South America, Eurasia. (Latin: sand, a common habitat) [Hartman, Rabeler, & Utech 2005 FNANM 5:51–56] Based in part on molecular evidence, most taxa moved to Eremogone.
Unabridged references: [McNeill 1980 Rhodora 82:495–502; Hartman, Rabeler, & Utech 2005 FNANM 5:51–56]
Unabridged note: Based in part on molecular evidence, taxa in 2 of McNeill's subgenera here included in Eremogone.

Key to Arenaria

A. lanuginosa (Michx.) Rohrb. var. saxosa (A. Gray) Zarucchi et al. ROCK SANDWORT, SPREADING SANDWORT
NATIVE
Perennial herb, tufted or stems trailing, green. Stem: 10–40 cm, rounded, dull; hairs minute, down-curved, ± in lines. Leaf: 8–22 mm, 2–6 mm wide, generally narrowly lanceolate to oblanceolate, obtuse to acute; vein 1. Inflorescence: terminal or axillary; flowers few to many; pedicels 3–25 mm. Flower: sepals 1.5–2.8 mm, in fruit < 3.5 mm, acute to acuminate; petals 1.5–3.5 mm. Seed: 8–12, 0.7–0.8 mm, ± round, compressed, smooth, dark brown.
2n=44. Moist, sandy soil along streams; 1800–2600 m. San Bernardino Mountains, Peninsular Ranges; to Colorado, Texas, Mexico. [Arenaria lanuginosa subsp. saxosa (A. Gray) Maguire] Spring–summer [Online Interchange] {CNPS list}
Unabridged synonyms: [Arenaria confusa Rydb.; Stellaria lagunensis M.E. Jones]
Unabridged note: 1 other var., in southeastern United States, Mexico to South America. Expanded author citation: Arenaria lanuginosa (Michaux) Rohrb. var. saxosa (A. Gray) Zarucchi, R.L. Hartm., & Rabeler

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 31 2014
Citation for this treatment: [Author of taxon treatment] 2013. Arenaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81552, accessed on Jul 31 2014

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Bioregions in which Arenaria lanuginosa var. saxosa occurs 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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CCH collections by month

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