Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



Ronald L. Hartman (except Silene)

Annual, biennial, perennial herb, rarely dioecious, taprooted or rhizome generally slender
Leaves simple, generally opposite; stipules generally 0; petiole generally 0; blade entire, sheath generally 0
Inflorescence: cyme, generally open; flowers few–many or flower solitary and axillary; involucre generally 0
Flower generally bisexual, radial; hypanthium sometimes present; sepals generally 5, ± free or fused into a tube, tube generally herbaceous between lobes or teeth; awns generally 0; petals generally 5 or 0, generally tapered to base (or with claw long, blade expanded), entire to 2–several-lobed, blade generally without scale-like appendages (inner surface), generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries generally 0; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2–5 or 1 and 2–3-branched
Fruit: capsule or utricle (rarely modified, dehiscent), generally sessile
Seeds: appendage generally 0
Genera in family: 85 genera, 2400 species: widespread, especially arctic, alpine, temp, n hemisphere; some cultivated (Agrostemma, Arenaria, Cerastium, Dianthus, Gypsophila, Lychnis, Saponaria, Silene, Vaccaria ).



Annual, perennial herb, erect to mat-forming, taprooted
Stem generally round in X -section
Leaf: blades thread-like to ovate; veins 1–5
Inflorescence: cyme, terminal or axillary, open to head- or umbel-like; flowers 1–many; peduncles and pedicels 0–50+ mm
Flower: hypanthium barely present; sepals 5, ± free, 1.5–8 mm, ± lanceolate to widely ovate, glabrous to glandular-hairy; petals 0 or 5, 1.5–10 mm, entire or notched; stamens inserted on obscure to prominent disk; ovary ± superior, styles 3, 0.5–2 mm
Fruit: capsule, ovoid to urn-shaped; teeth 6, ascending to recurved
Seeds 1–15+, grayish, dark brown, reddish brown, yellowish tan, blackish purple, or blackish
Species in genus: 150 species: n temp, especially mtns, arctic Am, Eurasia
Etymology: (Latin: sand, a common habitat)
Reference: [McNeill 1980 Rhodora 82:495–502]


A. lanuginosa (Michx.) Rohrb. subsp. saxosa (A. Gray) Maguire

Perennial, 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, herbaceous, obtuse to acute; vein 1
Inflorescence: cyme, terminal or axillary; flowers few–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; nectaries not apparent
Seeds 8–12, 0.7–0.8 mm, ± circular, compressed, smooth, dark brown
Chromosomes: 2n=44
Ecology: Uncommon. Moist, sandy soil along streams
Elevation: 1800–2600 m.
Bioregional distribution: San Bernardino Mountains, Peninsular Ranges
Distribution outside California: to Utah, New Mexico, Mexico
Synonyms: A. confusa Rydb.; Stellaria lagunensis M.E. Jones
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for ARENARIA%20lanuginosa%20subsp.%20saxosa being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Arenaria lanuginosa subsp. saxosa
Retrieve dichotomous key for Arenaria
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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