Jepson Flora Project: Jepson Interchange    

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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.



Elizabeth McClintock

Perennial, shrub; hairs short and in stellate clusters, or short or long and simple, peltate, or glandular
Stem erect, generally branched
Leaves simple, generally opposite, entire, petioled or not; stipules present or 0
Inflorescence: cyme (raceme- or panicle-like), or flowers solitary
Flower generally bisexual, radial; sepals 5, outer 2 often narrower, bract-like, or 3, often persistent in fruit; petals generally 5, generally ephemeral; stamens generally many, free, ± persistent in fruit or not; ovary superior, chamber 1 (or appearing as 3–10 from intruded parietal placentas), style 1 or 0, stigma generally 1, entire or 3–10-lobed
Fruit: capsule, loculicidal, 3–10-valved
Seeds 3–many
Genera in family: 8 genera, 165 species: warm temp, especially Medit; some cultivated (Cistus ; Helianthemum ; Tuberaria )
Reference: [Brizicky 1964 J Arnold Arbor 45:346–357]
Fls open in sunshine for < 1 day.



Perennial, shrub, evergreen; hairs generally in stellate clusters, rarely glandular (except inflorescence), very sparse to dense
Stem generally erect, ± broom-like
Leaves cauline, generally alternate in CA, generally linear to lanceolate or oblanceolate, ± sessile; stipules present or 0
Inflorescence raceme- or panicle-like
Flower: sepals 5, outer 2 generally narrower; petals yellow; stamens 10–many; style < 2 mm, stigma ± hemispheric
Fruit generally 3-valved
Seeds 3–many
Species in genus: ± 120 species: ± range of family
Etymology: (Greek: sun flower)
Reference: [Daoud & Wilbur 1965 Rhodora 67:63–82, 201–216, 255–312]
CA species especially abundant after fire.


H. scoparium Nutt.


Stem 12–45 cm
Leaf 5–40 mm, 0.5–6 mm wide, generally linear to narrow-oblanceolate
Flower: outer sepals 0.5–4.5 mm, < 0.5 mm wide, linear; inner sepals 2.5–7 mm, 2–3.5 mm wide, ovate, acuminate; petals 3–11 mm, obovate; stamens 12–45
Fruit 2.5–4 mm, ovoid
Seeds 4–10
Ecology: Dry sandy or rocky soil of hills, slopes, ridges
Elevation: < 1500 m.
Bioregional distribution: North Coast Ranges, n&c Sierra Nevada Foothills, n High Sierra Nevada, San Joaquin Valley, Central Western California, South Coast, Channel Islands, San Bernardino Mountains, Peninsular Ranges
Synonyms: H. suffrutescens B. Schreib., Bisbee Peak rush-rose
Varieties vulgare Jeps. and aldersonii (Greene) Munz not recognized. Threatened by mining.

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