Robert W. Freckmann Herbarium

Lamiaceae: Mint

Opposite leaves and square stems. Plants have tiny oil glands that may give the distinctive mint odor. Flowers from leaf axils with tubular corollas, 5 petals usually with 2 flaring lips, the upper notched or 2-lobed, lower 3-lobed. The ovary is deeply 4-lobed; 4 stamens, 2 long, 2 short.
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Flower Formula:  Sepals (5); Petals (5)z Glossary

Genus 
(Click for Taxon List)
WI Taxa
(map link)
Photo Genus Traits Google Searches
Moluccella
shellflower
1 Photo of Moluccella Tiny whitish flowers surrounded by persistent bright green cup-like calyces forming a tall, narrow spike Images   Information
Trichostema
blue-curls
1 Photo of Trichostema Blue flowers, upper lip of 4 about equal lobes; lower lip largest, 4 protruding stamens; 1 to 3 flowers per leaf axils; stems with many branches, fine hairs Images   Information
Acinos
1 Photo of Acinos Blue flowers, all lips about equal, 4 stamens shorter than lips, with 1 to 3 flowers in loose clusters at leaf axils; distinctly spaced along stem Images   Information
Calamintha
1 Photo of Calamintha Pink, large flowers, lips almost equal with the 4 stamens shorter than lips; 2 to 8 flowers in loose clusters at leaf axils distinctly spaced along stem. Thin, smooth, toothless leaves Images   Information
Ballota
horehound
1 Photo of Ballota Pink large flowers, upper lip helmet-like and 4 stamens shorter than lips, in loose whorls at leaf axils; distinctly spaced along upper stem Images   Information
Glechoma
creeping-Charlie, ground-ivy
3 Photo of Glechoma Purple flowers, lower lip large with middle lobe of lower lipped clefted, 4 stamens only slightly longer than upper lip; loose whorls from leaf axils distinctly spaced along lax stem Images   Information
Hedeoma
false pennyroyal
2 Photo of Hedeoma Tiny bluish flowers, lips almost equal, the upper erect, toothed, 2 stamens shorter than lips; whorls from leaf axils distinct but tightly spaced along stem Images   Information
Satureja
1 Photo of Satureja Pinkish - white flowers, lips almost equal, lower 3-lobed, 4 stamens shorter than lips; loose clusters in upper leaf axils; leaves narrow; stems nodes fuzzy Images   Information
Ocimum
basil
1 Photo of Ocimum Pale purple flowers, lower lip pointing downward, upper lip 4 lobed, 4 stamens; clusters in leaf axils along upper stem and terminal; leaves smooth Images   Information
Lamiastrum
yellow archangel
1 Photo of Lamiastrum Yellow flowers, upper lip helmet-like, lower lip 2-parted, grows in tight whorls from the upper leaf axils Images   Information
Lamium
dead-nettle
3 Photo of Lamium Pink flowers, upper lip helmet-like, lower lip 2-parted & occasionally spotted, 4 stamens shorter than lips; tight whorls from leaf axils distinctly spaced along upper stem and terminal Images   Information
Leonurus
motherwort
1 Photo of Leonurus Pink flowers, upper lip helmet-like, lower 3-parted-central spotted, 4 stamens shorter than lips ; tight whorls in leaf axils distinctly spaced along stem; leaves long, often 3 deep lobed Images   Information
Lycopus
bugleweed, water-horehound
6 Photo of Lycopus Whitish tiny flowers with 2 stamens slightly protruding; tight, small whorls from leaf axils distinctly spaced along stem; leaves long and often with deep sharp teeth Images   Information
Mentha
mint
9 Photo of Mentha Small blue to white flower, short tube, usually 4-lobed; upper lobe fusion of 2, usually wider than others; 4 protruding stamens; whorls at leaf axils or in terminal spikes; leaves toothed Images   Information
Pycnanthemum
mountain mint
2 Photo of Pycnanthemum Whitish flowers, lips about equal, lower 3 lobed; 4 protruding stamens; many small domed clusters forming flatish terminal heads, leaves short, densely packed, very narrow Images   Information
Dracocephalum
dragonhead
1 Photo of Dracocephalum Small blue-purple flowers, upper lip straight, lower lip 3-lobed- central one longer and sometimes 2-cleft, 4 stamens shorter than lips; dense conical spikes along upper stem and terminal Images   Information
Stachys
hedge-nettle
5 Photo of Stachys Pink spotted flowers, upper lip mostly helmet-like, lower lip 3-lobed, 4 stamens shorter than lips; whorls in leaf axils getting denser as they approach the top of the stem forming a loose terminal conical spike Images   Information
Teucrium
germander
3 Photo of Teucrium Pink spotted flowers, lips joined; upper smaller- 2 lobed, lower 3-lobed with middle one largest; 4 stamens longer than lips; terminal, conical spike. Leaves softly fuzzy on top, stems densely fuzzy Images   Information
Prunella
self-heal
3 Photo of Prunella Purple flowers, upper lip helmet-like, lower lip shorter, fringed, 4 stamens; in 4-angled, dense, conical, terminal spikes; leaves and stems with fine hairs Images   Information
Chaiturus
1 Photo of Chaiturus Pink flowers, lower lip much larger, spreading, 4 stamens shorter than lips; tight whorls in leaf axils distinctly spaced along stem; all lips about same length; lower lip 3 parted, center lobe square-ish tipped Images   Information
Clinopodium
1 Photo of Clinopodium Pink flowers, lips about equal, lower 3 parted with center lobe clefted, 4 stamens shorter than lips; in tight round whorls from upper leaf axils and terminal; fine hairs in throat Images   Information
Galeopsis
hemp-nettle
4 Photo of Galeopsis Pink, some with yellowish center, flowers with upper lip helmet-like, 4 stamens shorter than lips; roundish whorls from leaf axils distinctly spaced along upper stem and terminal; stems hairy Images   Information
Origanum
1 Photo of Origanum Pinkish flowers, lower lip pointing downward, 3 lobed, upper lip 2 lobed, 4 protruding stamens; tight round terminal clusters; leaves smooth and dotted with small depressions Images   Information
Monarda
horsemint, wild bergamot
3 Photo of Monarda Pink to deep red flowers, upper lip 2-lobed, narrow, lower lip broad, 3-lobed, 2 protruding stamens; tight round clusters from leaf axils distinctly spaced along stem and terminal Images   Information
Blephilia
woodmint
2 Photo of Blephilia Red spotted or purple flowers, upper lip helmet-like and the 2 protruding stamens, in tight round whorls from leaf axils often distinctly spaced along upper stem and terminal Images   Information
Ajuga
bugle
2 Photo of Ajuga Blue flowers, lobes about same length as tube; upper lip very short, lower lip wide and long, and the 4 stamens shorter than lower lip, in terminal linear spikes usually much taller than rest of plant; Images   Information
Thymus
1 Photo of Thymus Pink flowers, 2-lipped, upper mostly flat, lower lip spreading, slightly longer, 3-equal-ish lobes, 4 protruding stamens; mostly loose clusters both terminal and from leaf axils. Images   Information
Scutellaria
skullcap
6 Photo of Scutellaria Purple to blue flowers, upper lip mostly helmet-like, side lobes of lower lip partially separated from central-broad middle lobe, 4 stamens shorter than lip; either solitary in leaf axis or linear terminal spikes Images   Information
Salvia
sage
5 Photo of Salvia Mostly showy flowers with 2 lips, upper often helmet-like, the lower 3-lobed, 2 stamens sometimes protruding; tall terminal spike Images   Information
Collinsonia
horse-balm, horseweed
1 Photo of Collinsonia Yellowish-white flowers, fringed lower lip with 2 much protruding stamens; in pairs along stems of widely spaced terminal panicle Images   Information
Agastache
giant hyssop
3 Photo of Agastache Blue, yellow, or pale purple flowers, with lower lip longer and the 4 protruding stamens; in dense mostly terminal cylindrical spikes usually shorter than rest of plant; toothed ovate leaves; Images   Information
Hyssopus
hyssop
1 Photo of Hyssopus Blue to pink showy flowers, lower lip much larger, 4 stamens much longer than tube; tight usually spiked clusters both terminal and from leaf axils distinct but tightly spaced along upper stem Images   Information
Elsholtzia
1 Photo of Elsholtzia Blue-purple flowers; lips almost equal in length, lower lip 3 un-notched, 4 protruding stamens; dense linear spikes at upper leaf axils and terminal Images   Information
Physostegia
false dragonhead, obedience
1 Photo of Physostegia Pink, large flowers, upper lip helmet-like, lower lip and throat spotted, 4 stamens shorter; on long, pointed, terminal spikes; leaves stalkless Images   Information
Perilla
1 Photo of Perilla Pink flowers with 5 similar, hairy lobes, 4 stamens; tall terminal spikes with 2 flowers per cluster; stems and leaves purple Images   Information
Nepeta
catnip
2 Photo of Nepeta Whitish flowers, spotted throat, 4 stamens; tight clusters from leaf axils distinctly spaced along upper stem and terminal; leaves grayish-green, fuzzy. [One blue rarely seen escaped cultivar in our area] Images   Information


         
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