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

  • Up-to-date information about California vascular plants is available from 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 or ± prostrate, taprooted
Leaf: stipules 1–6 mm, lanceolate to ovate, scarious, ± entire, white; blade elliptic to oblanceolate; vein ± 1
Inflorescence: clusters axillary; flowers 1–12 per cluster, dense; pedicels 0–2 mm
Flower: hypanthium cup-shaped; calyx sometimes abruptly expanded above; sepals 5, free, 0.7–4.4 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, 0.5–1 mm, thread-like, arising from hypanthium rim; styles 2 or 2-branched in upper 1/2, 0.2–0.5 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 285:64–297]


P. ahartii Ertter


Annual, inconspicuous, ± spheric; taproot < 1 mm diam
Stem ± erect, 0.5–2 cm, ± concealed by leaves
Leaf: stipules 3–6 mm; blade 2–7.5 mm, ± narrowly oblanceolate, smooth, green; tip a bristle; margin and midrib scabrous
Flower 1, axillary, 4.2–5 mm, ± moderately hairy in lower 1/2; hairs 0.3–0.6 mm, tightly coiled; sepals 3.8–4.4 mm (except awn), ± lanceolate, tip erect, 1–1.5 mm, margin 0.5–1 mm wide, awned from back, awn 1–1.5 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.
See the CNPS Inventory for information about endangerment and rarity.
previous taxon | next taxon
bioregional map for PARONYCHIA%20ahartii being generated

Retrieve Jepson Interchange Index to Plant Names entry for Paronychia ahartii
Retrieve dichotomous key for Paronychia
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
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California