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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

CERASTIUM MOUSE-EAR CHICKWEED
Annual, perennial herb, erect to mat-forming; taproot or rhizomes present. Leaf: blade linear to ovate; vein 1; axillary leaf clusters generally 0. Inflorescence: terminal or axillary; flowers few to many, open to dense; pedicels 1–36+ mm. Flower: sepals (4)5, 3–12 mm, free, lanceolate to ovate, hairy to glandular-hairy, hairs generally not exceeding tip; petals 0 or (4)5, 2.5–15 mm, ± 2-lobed; stamens (4,5)10; styles (4)5, 0.5–3.3 mm. Fruit: capsule, cylindric, often ± curved in upper 1/2; teeth (8)10, spreading to recurved. Seed: several to many, pale to red-brown.
± 180 species: worldwide, especially northern temperate. (Greek: horn, from fruit shape) [Morton 2005 FNANM 5:74–93]

Key to Cerastium

C. beeringianum Cham. & Schltdl. BERING MOUSE-EAR CHICKWEED
NATIVE
Perennial herb, generally not flowering 1st year, 1.5–10 cm, glandular-hairy. Stem: non-flowering (mat-forming) and flowering (± erect). Leaf: on flower stem 5–15 mm, lanceolate to elliptic. Inflorescence: bracts ± completely not scarious; pedicels in fruit 0.3–2.2 × sepals. Flower: parts 5; calyx 4.5–6 mm, ± glandular-hairy, scarious margin of outer sepals < 0.2 mm wide; petals 6–12 mm, 1.2–2.8 mm > sepals. Fruit: 5.5–8.5 mm. Seed: 0.7–0.8 mm.
2n=72. Moist, rocky areas, grassy meadows, open slopes; 2900–4300 m. n&c High Sierra Nevada, White and Inyo Mountains; to Alaska, Montana, Colorado, New Mexico. [Cerastium beeringianum var. capillare Fernald & Wiegand] Jul–Aug [Online Interchange]
Unabridged synonyms: [Cerastium beeringianum subsp. earlei (Rydb.) Hultén]

Previous taxon: Cerastium arvense subsp. strictum
Next taxon: Cerastium dichotomum

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 16 2014
Citation for this treatment: [Author of taxon treatment] 2012. Cerastium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18654, accessed on Apr 16 2014

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Bioregions in which Cerastium beeringianum 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.