Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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, ± prostrate, taprooted
Leaves opposite below, alternate above; stipules 0.4–1 mm, ovate to deltate, scarious, ciliate, white; blade oblanceolate to obovate; vein 0–1
Inflorescence: cyme, axillary; flowers 3–10, dense, ± sessile
Flower: hypanthium cup-like, not abruptly expanded above; sepals 5, 0.6–1.2 mm, free, lanceolate to oblong, hairy, margin entire, herbaceous; petals 0; fertile stamens 2–5, sterile stamens 4–5, ± 0.5 mm, ± thread-like, arising from hypanthium rim; styles 2 or 2-branched in upper 2/3, 0.1–0.4 mm
Fruit: utricle, obovoid
Seed 1, dark reddish brown
Species in genus: 20 species: Eur, s Asia, Africa
Etymology: (Latin: rupture, 1 sp. being a supposed cure)
Reference: [Chaudhri 1968 Meded Bot Mus Herb Rijks Univ Utrecht 285:297–398]


H. hirsuta L.

Stem generally 4–20 cm
Leaf: stipules 0.4–1 mm; blade 1–13 mm
Inflorescence: flowers 3–8
Flower: sepals ± equal to unequal; stamens 2–5; styles 2 or 2-branched
Fruit minutely papillate
Seed ± compressed, smooth; margin with prominent rim
Ecology: Disturbed, sandy or clay soils
Elevation: < 1750 m.
Bioregional distribution: Klamath Ranges, c&s Sierra Nevada Foothills, c High Sierra Nevada, San Joaquin Valley, San Francisco Bay Area, South Coast
Distribution outside California: native to s Europe, n Africa, sw Asia


subsp. cinerea (DC.) Cout.

Stem generally 5–20 cm
Inflorescence: flowers 3–8
Flower ± 1.2–1.8 mm; hairs of 2 sizes, long hairs 1/2–2/3 X sepals, tips of some or all hooked or tightly coiled, short hairs 1/4–1/3 X sepals, generally on hypanthium, tips recurved; sepals in fruit ± unequal; stamens 2–3; styles 2, 0.2–0.4 mm
Seed 0.5–0.6 mm
Chromosomes: 2n=36
Ecology: Disturbed areas, alkaline hills, clay flats
Elevation: < 800 m.
Bioregional distribution: s Sierra Nevada Foothills, c High Sierra Nevada, San Joaquin Valley, San Francisco Bay Area, South Coast
Distribution outside California: native to s Europe, n Africa, sw Asia
Synonyms: H. c. DC.; Paronychia pusilla Greene
Possibly best treated as separate sp.

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bioregional map for HERNIARIA%20hirsuta%20subsp.%20cinerea 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 Herniaria hirsuta subsp. cinerea
Retrieve dichotomous key for Herniaria
Overlay Consortium of California Herbaria specimen data by county on this map
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