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.

BRASSICACEAE

MUSTARD FAMILY

Reed C. Rollins, except as specified

Annual to subshrub
Leaves generally basal and cauline, alternate, generally simple; stipules 0
Inflorescence: generally raceme
Flower bisexual; sepals 4, free; petals (0)4, free, generally white or yellow, often clawed; stamens generally (2,4)6, generally 4 long, 2 short; ovary 1, superior, chambers generally 2, septum membranous, connecting 2 parietal placentas, style 1, stigma simple or 2-lobed
Fruit: generally capsule ("silique") with 2 deciduous valves, sometimes breaking transversely or indehiscent
Seeds 1–many per chamber
Genera in family: 300+ genera, 3000+ species: worldwide, especially cool regions; some cultivated for food (especially Brassica, Raphanus ) and ornamental
Recent taxonomic note: Recently treated to include Capparaceae [Rodman et al. 1993 Ann Missouri Bot Gard 80:686–699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.

ERYSIMUM

WALLFLOWER

Robert A. Price

Annual to subshrub; hairs appressed, forked to many-branched
Leaves in basal rosettes and cauline, simple, entire to lobed
Flower: petals clawed, generally cream to orange; stigma 2-lobed
Fruit narrow, round, 4-sided, or ± flattened (generally parallel to septum); style 0.2–5 mm
Seeds 1–2 rows per chamber, 1–4 mm, often ± winged
Species in genus: 160+ species: temp n hemisphere, especially Eurasia
Etymology: (Greek: to help, from medicinal uses)
Reference: [Rossbach 1958 Madroño 14:261–267]
Incl Cheiranthus ; native CA taxa all related to E. capitatum.

Native

E. menziesii (Hook.) Wettst.

Biennial or short-lived perennial herb
Stems 1–several, 1–15(30) cm, generally little-branched
Leaves generally in dense rosette, generally fleshy; hairs 2–several-branched; lower leaves 2–11 cm, ± spoon-shaped, entire to lobed
Flower: petals 14–32 mm, generally yellow
Fruit (especially lower) generally stiffly spreading, 3–14 cm, 1.5–5 mm wide, slightly to very fleshy and round when immature, flattened when dry; style 0.5–3 mm
Seed 1.7–4 mm, 1–3 mm wide
Chromosomes: n=18
Ecology: Coastal foredunes, headlands, cliffs
Elevation: 0–300 m.
Bioregional distribution: North Coast, Central Coast
Distribution outside California: to s Oregon

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