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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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LAMIACEAE

MINT FAMILY

Dieter H. Wilken, except as specifed

Annual, perennial herb, shrub, glabrous to hairy, generally aromatic
Stems generally erect, generally 4-angled
Leaves generally simple to deeply lobed, opposite, generally gland-dotted
Inflorescence: cyme, generally clustered around stem, head-like, separated by evident internodes (terminal in Monardella ) or collectively crowded, spike-like to panicle-like (sometimes raceme or flowers 2–12); subtended by leaves or bracts; flowers sessile or pedicelled
Flower generally bisexual; calyx generally 5-lobed, radial to bilateral; corolla generally bilateral, 1–2-lipped, upper lip entire or 2-lobed, ± flat to hood-like, sometimes 0, lower lip generally 3-lobed; stamens generally 4, generally exserted, paired, pairs unequal, sometimes 2, staminodes 2 or 0; ovary superior, generally 4-lobed to base, chambers 2, ovules 2 per chamber, style 1, arising from center at junction of lobes, stigmas generally 2
Fruit: nutlets 4, generally ovoid to oblong, smooth
Genera in family: ± 200 genera, 5500 species: worldwide. Many cultivated for herbs, oils (Lavandula , lavender; Mentha , mint; Ocimum , basil; Rosmarinus , rosemary; Thymus , thyme), some cultivated as ornamental (in CA Cedronella , Leonotis , Phlomis )
Reference: [Cantino & Sanders 1986 Syst Bot 11:163–185]

PYCNANTHEMUM

Perennial, glabrous to hairy
Stems erect, simple or branched above middle
Leaves petioled to subsessile
Inflorescences head-like, axillary at upper nodes and terminal, subtended by leaves or bracts; flowers subsessile
Flower: calyx 5-lobed, lobes ± equal, deltate, acute to awned; corolla 2-lipped, upper lip generally 2-lobed, ± flat, lower lip 3-lobed, lobes ± equal; stamens 4
Fruit: smooth or puberulent
Species in genus: 17 species: North America
Etymology: (Greek: densely flowered)

Native

P. californicum Torr.

Plant 5–10 dm
Stem glabrous to puberulent
Leaves > internodes, ± overlapping; petiole < 3 mm; blade 2.5–7.5 cm, generally ovate to widely lanceolate, base ± rounded, tip generally acute, entire to finely toothed, glabrous to puberulent
Inflorescences 2–5, head-like; lower subtended by ± elliptic leaves; upper subtended by linear-lanceolate bracts
Flower: calyx 4–5.5 mm, puberulent, lobes densely short-hairy; corolla 5–6.5 mm, white, upper lip 2.5–3 mm, lower lip ± 2–3 mm, purple- or violet-spotted
Chromosomes: 2n=40
Ecology: Moist sites, chaparral, oak woodland, coniferous forest
Elevation: 500–1800 m.
Bioregional distribution: Klamath Ranges, n North Coast Ranges, Cascade Range, Sierra Nevada, n Sacramento Valley, Transverse Ranges, Peninsular Ranges, Modoc Plateau
Horticultural information: IRR, SUN: 1, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

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bioregional map for PYCNANTHEMUM%20californicum being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Pycnanthemum californicum
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