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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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

PRIMULACEAE

PRIMROSE FAMILY

Anita F. Cholewa and Douglass M. Henderson

Annual, perennial herb, subshrub, glabrous to glandular-hairy
Leaves simple, basal or cauline, alternate, opposite, or whorled, sessile or petioled; stipules 0
Inflorescence sometimes scapose
Flower bisexual, radial; parts generally in 4's or 5's; calyx deeply lobed, often persistent; corolla lobes spreading to reflexed; stamens epipetalous, opposite corolla lobes; ovary generally superior, 1-chambered, placenta basal or free-central, style 1, stigma head-like
Fruit: capsule, circumscissile or 2–6-valved
Seeds small, few–many
Genera in family: ± 25 genera, 600 species: especially n hemisphere; several ornamental (Cyclamen , Dodecatheon , Primula )
Reference: [Channell & Wood 1959 J Arnold Arbor 40:268–288]

LYSIMACHIA

LOOSESTRIFE

Perennial
Leaves cauline, opposite or whorled, sessile or petioled, lanceolate to widely ovate, gland-dotted, entire
Inflorescence: raceme, panicle, or flower solitary
Flower: parts generally in 5's or 6's; corolla > calyx, yellow; filaments free or fused at base; ovary superior
Fruit 5–6-valved, ovate
Species in genus: 100 species: generally n temp
Etymology: (Greek: loose dagger)
Reference: [Ray 1956 Illinois Biol Monogr 24:1–160]

Native

L. thyrsiflora L.

TUFTED LOOSESTRIFE


Stem erect, 20–80 cm, unbranched, glabrous
Leaf 5–12 cm, lanceolate, sessile; base long-tapered
Flower: calyx lobes 1–4 mm; corolla yellow, often with purple dots, lobes linear, generally with small tooth in each sinus; filaments free, erect, thread-like throughout, glabrous
Fruit ± > calyx, black-dotted
Chromosomes: 2n=40,54
Ecology: Wet places
Elevation: 800–1300 m.
Bioregional distribution: Klamath Ranges, Cascade Range, c Sierra Nevada Foothills (Calaveras Co.), n High Sierra Nevada (Plumas Co.)
Distribution outside California: to Alaska, e N.America, Eurasia
Horticultural information: TRY.

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