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Pycnanthemum tenuifolium Schrad.
NARROWLEAF MOUNTAINMINT
Life   Plantae   Dicotyledoneae   Lamiaceae   Pycnanthemum

Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
© Copyright Sheryl Pollock 2011 · 8
Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint

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Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
© Copyright Sheryl Pollock 2011 · 8
Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
© Copyright Sheryl Pollock 2011 · 6
Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint

Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
© Copyright Sheryl Pollock 2011 · 5
Pycnanthemum tenuifolium, Narrow-leaved Mountain Mint
Pycnanthemum tenuifolium, leaf and flower
© Kay Yatskievych, 2003 · 1
Pycnanthemum tenuifolium, leaf and flower

Associates · map
FamilyScientific name @ source (records)
Apidae  Bombus citrinus @ AMNH_BEE (7)

Bombus impatiens @ AMNH_BEE (2)

Xylocopa virginica @ AMNH_BEE (1)
Dictyopharidae  Phylloscelis pallescens @ UDCC_NRI (10)
Halictidae  Halictus confusus @ AMNH_BEE (1)

Halictus ligatus @ AMNH_BEE (1)
Pucciniaceae  Puccinia menthae @ BPI (1)
Thyreocoridae  Corimelaena pulicaria @ NCSU (1)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Pycnanthemum tenuifolium Schrad. Slender Mountain-mint
Lamiaceae — Mint family
Native
Pycnanthemum tenuifolium
Cedar Swamp Wildlife Area
June 2002 Pycnanthemum tenuifolium Pycnanthemum tenuifolium Pycnanthemum tenuifolium
White Clay Creek
August 2016

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
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Pycnanthemum tenuifolium Schrad. - Slender Mountain Mint

Pycnanthemum tenuifolium plant

Family - Lamiaceae

Stems - To +80cm tall, erect, herbaceous, multiple or single from base, branching, 4-angled, glabrous, from thin rhizomes.

Leaves - Opposite, sessile, entire, linear, acute, to 5.5cm long, 2-4mm broad, glabrous, dark green above, lighter green below, punctate.

Pycnanthemum tenuifolium leaves

Inflorescence - Compact corymbose arrangement of glomerules. Glomerules +/-7mm broad, 4mm tall(long), with an involucre of attenuate pubescent bracts. Bracts 3-4mm long, 2mm broad, with densely ciliate margins, reduced inward. Flowers sessile.

Flowers - Corolla white to pinkish, bilabiate. Corolla tube to -5mm long, pubescent externally near apex. Upper lip single-lobed. Lobe to 2.6mm long, 1.4mm broad, emarginate, pubescent internally and externally. Lower lip 3-lobed, with faint pinkish spotting. Central lobe longer than lateral lobes, to 2.5mm long, 1.2mm broad, pubescent internally and externally. Stamens 4, didynamous, adnate at apex of corolla tube. Filaments to 1.9mm long, white, glabrous. Anthers pale lilac, .4mm broad. Style white, to 6mm long, glabrous, long exserted, tuberculate and expanded just above ovary. Stigma 2-lobed. Ovary 4-parted, green, glabrous. Calyx tube 2.7mm long, lanate, 4-lobed. Lobes equal, acute, to 1.1mm long, short pubescent to glabrous externally, glabrous internally. Nutlets dark brown at maturity, to 1mm long.

Pycnanthemum tenuifolium flower

Flowering - June - September.

Habitat - Dry rocky open woods, prairies, wet thickets, meadows, streambanks, roadsides, railroads.

Origin - Native to U.S.

Other info. - This species is common throughout the entire state of Missouri.
This member of the mint family is easy to recognize because of its thin dense leaves and its dense small flower clusters (glomerules). Insects like to visit the plant to retrieve nectar. The leaves and stem have a strong minty odor and the plant can be brewed as a tea.

Photographs taken in St Clair County, MO., 6-25-04.


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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=PYTE ---> https://plants.usda.gov/java/profile?symbol=PYTE
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://plants.usda.gov/java/profile?symbol=PYTE

Following modified from CalPhotos
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CalPhotos     Photo Database

 

Number of matches : 9
Query: SELECT * FROM img WHERE ready=1 and taxon like "Pycnanthemum tenuifolium%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4761 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4762 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4763 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4764 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4765 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4766 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4767 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4768 [detail]
© 2016 Keir Morse

Pycnanthemum tenuifolium
Pycnanthemum tenuifolium
Narrow-leaved Mountain-mint
ID: 0000 1111 1234 4769 [detail]
© 2016 Keir Morse

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


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