|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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 fewmany 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 2several-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 25 or 1 and 23-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 or ± prostrate, taprooted
Leaf: stipules 16 mm, lanceolate to ovate, scarious, ± entire, white; blade elliptic to oblanceolate; vein ± 1
Inflorescence: clusters axillary; flowers 112 per cluster, dense; pedicels 02 mm
Flower: hypanthium cup-shaped; calyx sometimes abruptly expanded above; sepals 5, free, 0.74.4 mm (except awn), lanceolate to ovate, ± hairy, margin narrow, white, scarious; awn thread-like to stiff, wavy to stiff; petals 0; fertile stamens 5, sterile stamens 0 or 5, 0.51 mm, thread-like, arising from hypanthium rim; styles 2 or 2-branched in upper 1/2, 0.20.5 mm
Fruit: utricle, ovoid to spheric
Seed 1, brown
Species in genus: 50 species: worldwide
Etymology: (Greek: inflammation of finger, especially beneath nail [whitlow], from ailment the plant was believed to cure)
Reference: [Chaudhri 1968 Meded Bot Mus Herb Rijks Univ Utrecht 285:64297]
Annual, inconspicuous, ± spheric; taproot < 1 mm diamSee the CNPS Inventory for information about endangerment and rarity.
Stem ± erect, 0.52 cm, ± concealed by leaves
Leaf: stipules 36 mm; blade 27.5 mm, ± narrowly oblanceolate, smooth, green; tip a bristle; margin and midrib scabrous
Flower 1, axillary, 4.25 mm, ± moderately hairy in lower 1/2; hairs 0.30.6 mm, tightly coiled; sepals 3.84.4 mm (except awn), ± lanceolate, tip erect, 11.5 mm, margin 0.51 mm wide, awned from back, awn 11.5 mm, thread-like, wavy, ± spreading; sterile stamens ± 1 mm
Seed ± 1 mm, lenticular
Ecology: Well-drained, rocky outcrops, often vernal pool edges, volcanic uplands
Elevation: < 500 m.
Bioregional distribution: Cascade Range Foothills, Sacramento Valley.