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.



David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.



Willard W. Payne

Annual to shrub
Leaves generally opposite below, ± alternate above
Inflorescence: heads many, disciform; involucre cup-shaped, shallow; phyllaries few, free or fused; receptacle chaffy
Pistillate flowers 0–6; corolla 0 or cylindric
Staminate flowers 5–20; corolla translucent; anthers free, yellow; style tip truncate or tack-shaped
Fruit obovate, ± compressed; pappus 0
Etymology: (Latin: from mint Ajuga iva , with similar aroma)
Reference: [Jackson 1960 Univ KS Sci Bull 41:793–876]


I. hayesiana A. Gray


Perennial or subshrub < 1 m
Stems ± brown
Leaves 3–6 cm, ± oblanceolate, fleshy, entire, 3-veined from base, ± gland-dotted, generally short-appressed-hairy, reduced upward
Inflorescence raceme-like; heads short-peduncled, nodding; involucre 5–6 mm; phyllaries free, (ob)ovate; chaff scales linear
Pistillate flowers: corolla 0
Fruit plump, glabrous
Ecology: Alkaline flats
Elevation: < 500 m.
Bioregional distribution: s South Coast (sw San Diego Co.)
Distribution outside California: Baja California
Horticultural information: In cultivation.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for IVA%20hayesiana being generated

Retrieve Jepson Interchange Index to Plant Names entry for Iva hayesiana
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