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This genus is accepted, and its native range is SW. U.S.A. to S. America.
Lepechinia caulescens

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Perennial herbs to shrubs, rarely gynodioecious, or dioecious ( sect. parviflorae epling - see hart 1985); often aromatic
Morphology Leaves
Leaves entire to toothed, often rugose
Morphology Reproductive morphology Inflorescences
Inflorescence terminal and often axillary, a paniculate thyrse of lax, (1-) 3- to many-flowered cymes, or spiciform of ± congested, usually sessile, 6- to many-flowered verticillasters
Morphology Reproductive morphology Inflorescences Bracts
Bracts usually small
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles inconspicuous
Morphology Reproductive morphology Flowers
Flowers large to very small
Morphology Reproductive morphology Flowers Calyx
Calyx ± actinomorphic to weakly 2-lipped, 5-lobed (3/2), lobes deltoid to subulate or aristate, tube campanulate, 10-15-nerved, often accrescent and inflated, lobes spreading to connivent, throat exannulate
Morphology Reproductive morphology Flowers Corolla
Corolla weakly 2-lipped, 5-lobed (2/3), white, yellowish, purplish to red or blue, lobes often subequal, or anterior lobe larger, tube cylindrical to campanulate, sometimes shorter than calyx, usually annulate within
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, included to long-exserted, anterior pair usually longer, ascending, thecae 2, divergent to divaricate, elongate to oblong, sometimes confluent
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma-lobes short, subequal
Morphology Reproductive morphology Flowers Disc
Disc 4-lobed, nutlets ovoid, smooth, brown or black, abscission scar minute, not mucilaginous.
Note
2n = 32, 66.  About 40 species. Epling (1948) recognized eight sections, based mainly on inflorescence structure and floral morphology.  Hart (1983) recognized two: sect. Lepechinia and sect. Parviflorae, considering the former to be polyphyletic.
Ecology
Often montane
Distribution
Andes from Argentina and Chile northwards to Mexico and U.S.A. (California), with outlying species in Brazil and Hawaii, the Chilean L. chamaedryoides (Balbis) Epling naturalized in Réunion.

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Shrub, cauliflorous, densely hairy, with dendroid and simple hairs
Morphology Leaves
Leaves bullate, serrate, petioles unwinged
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, borne on bare stems below leaves, forming short, racemoid thyrses, cymes single-flowered
Morphology Reproductive morphology Inflorescences Bracts
Bracts caducous
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles inconspicuous
Morphology Reproductive morphology Flowers
Flowers medium-sized, pedicellate
Morphology Reproductive morphology Flowers Calyx
Calyx actinomorphic to weakly 2-lipped, 5-lobed, bright blue, lobes subequal, deltoid, tube broadly campanulate, membranous, accrescent
Morphology Reproductive morphology Flowers Corolla
Corolla 2-lipped, 5-lobed (4/1), ?red, posterior lip with 2 median lobes, separated by short sinus, lateral lobes rounded, almost obsolete, anterior lip rounded, tube short, exannulate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, ascending, long-exserted, filaments curved, thecae 2, strongly divergent, confluent, elongate
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma lobes short, subequal
Morphology Reproductive morphology Flowers Disc
Disc fleshy, scarcely lobed
Morphology Reproductive morphology Fruits
Nutlets ovoid, smooth, black, with minute basal scar.
Distribution
One species: the rarely collected C. mecistandrum Donn. Sm. is known only from Southern Mexico (Chiapas) and Guatemala.

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Subshrub, densely canescent with branched hairs
Morphology Leaves
Leaves toothed, glandular-punctate
Morphology Reproductive morphology Inflorescences
Inflorescence of 3-flowered sessile cymes in axils of bracts
Morphology Reproductive morphology Inflorescences Bracts
Bracts leaf-like
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles linear, inconspicuous
Morphology Reproductive morphology Flowers Calyx
Calyx ± actinomorphic, subequally 5-lobed, lobes broadly triangular, tube 5-nerved and reticulately veined between nerves, broadly infundibuliform, glabrous within, except for hairy calyx-lobes
Morphology Reproductive morphology Flowers Corolla
Corolla blue, 2-lipped, 5-lobed (2/3), lobes rounded, posterior lip emarginate, flat, equalling or slightly shorter than 3-lobed anterior lip, median lobe of anterior lip larger than laterals, tube straight, widening above and scarcely exceeding calyx, an
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, usually all fertile, didynamous, posterior pair slightly shorter, anterior slightly exserted from corolla-tube, thecae slightly divergent, distinct
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma-lobes subulate, flattened, subequal or anterior slightly longer
Morphology Reproductive morphology Flowers Disc
Disc symmetrical.
Note
One species, N. leucophylloides Ramamoorthy, Hiriart & Medrano
Distribution
Mexico, Hidalgo
Ecology
Open, calcareous hillside.

[LKGF]
Use
Some species used medicinally or as ornamentals.

Native to:

Argentina Northeast, Argentina Northwest, Bolivia, Brazil South, Brazil Southeast, California, Chile Central, Chile South, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Haiti, Mexican Pacific Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Panamá, Peru, Venezuela, Venezuelan Antilles

Introduced into:

Hawaii

Lepechinia Willd. appears in other Kew resources:

First published in Hort. Berol. 1: 20 (1804)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Lamiaceae Key Genus Fact Sheets

  • Alguelaguen Feuill. ex Adans., Fam. Pl. 2: 505 (1763).
  • Alguelagum Kuntze, Revis. Gen. Pl. 2: 511 (1891).
  • Astemon Regel, Index Seminum (LE) 1860: 38 (1860).
  • Epling, Brittonia 6: 352-364 (1948)
  • Harley RM, Atkins S, Budantsev AL, Cantino PD, Conn BJ, Grayer R, Harley MM, de Kok RPJ, Krestovskaja T, Morales R, Paton AJ, Ryding O, and Upson T. 2004. Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Sp
  • Hart, Ph.D. Diss., Harvard, Cambridge, Mass., U.S.A. (1983), rev.
  • Lepechinia Willd, Hort. Berol 1: 21, t.21 (1803)
  • Mahya Cordem., Fl. Réunion: 490 (1895).
  • Phytoxis Molina, Sag. Stor. Nat. Chili, ed. 2: 145 (1810).
  • Sphacele Benth., Edwards's Bot. Reg. 15: t. 1289 (1829).
  • Ulricia Jacq. ex Steud., Nomencl. Bot. 1: 862 (1821).

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Lamiaceae Key Genus Fact Sheets
Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
http://creativecommons.org/licenses/by/3.0