Pycnanthemum tenuifolium

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a widespread presence across both Eastern Canada and the North-Central United States. Within the Canadian landscape, its range extends through the provinces of Ontario and Québec. Moving southward into the United States, the species is well-established in the North-Central region. Specifically, it can be found growing in the states of Illinois and Iowa. Additionally, its distribution reaches further west into the plains of Kansas.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Pycnanthemum tenuifolium is characterized by its status as a perennial organism, allowing it to persist through multiple growing seasons. As a hemicryptophyte, its perennimal life strategy involves protecting its dormant buds at or just below the soil surface during unfavorable conditions, ensuring its survival and ability to regrow once favorable environmental conditions return. This specific life form facilitates its long-term establishment within its habitat, utilizing its perennial nature to maintain a stable presence in the ecosystem over time.

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Pycnanthemum tenuifolium is characterized by its growth form as a non-woody herb and forb, functioning as a self-supporting plant that does not exhibit climbing behavior. It is an independent organism, lacking any parasitic tendencies, and maintains a terrestrial existence rather than being aquatic, semiaquatic, or epiphytic. As a non-woody species, it lacks significant lignification, contributing to its herbaceous structure within its natural habitat.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Pycnanthemum tenuifolium is characterized by a metabolic framework consistent with the C3 photosynthetic pathway, which dictates its carbon fixation processes and environmental adaptations. In this C3 pathway, the initial fixation of atmospheric carbon dioxide is catalyzed by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO), leading to the direct production of three-carbon compounds within the mesophyll cells. This metabolic strategy requires the plant to manage the trade-offs between efficient carbon assimilation and transpirational water loss, particularly as the plant regulates its stomatal conductance to maintain internal turgor and gas exchange. The energy utilization efficiency of the plant is fundamentally linked to this C3 mechanism, influencing its growth rates and resource allocation patterns in response to light availability and ambient temperature fluctuations.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Pycnanthemum tenuifolium is characterized by a specific seasonal flowering window and the production of minute seeds. The plant enters its flowering stage in June, with the blooming period typically concluding in July. Throughout this reproductive cycle, the plant produces seeds that are remarkably uniform in size; the seed mass is consistent across the population, with a mean, maximum, and minimum value all measured at 7e-05 g.

Flowering time :

Jun

Flowering time :

Jul

Seed mass mean:

7e-05 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Pycnanthemum tenuifolium has 42 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 1,8-Cineole, 1-OCTEN-3-OL, 3-Hexenol, 3-OCTANOL, ALPHA-PHELLANDRENE.

1,8-Cineole

1. Dr. Duke

1-OCTEN-3-OL

1. Dr. Duke

3-Hexenol

1. Dr. Duke

3-OCTANOL

1. Dr. Duke

ALPHA-PHELLANDRENE

1. Dr. Duke

ALPHA-PINENE

1. Dr. Duke

Allo-Aromadendrene

1. Dr. Duke

BETA-ELEMENE

1. Dr. Duke

BETA-PINENE

1. Dr. Duke

BORNYL ACETATE

1. Dr. Duke

Activities

Pycnanthemum tenuifolium has 227 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include (-)-Chronotropic, (-)-Inotropic, ACE-Inhibitor, AChE-Inhibitor, Abortifacient.

(-)-Chronotropic

1. Dr. Duke

(-)-Inotropic

1. Dr. Duke

ACE-Inhibitor

1. Dr. Duke

AChE-Inhibitor

1. Dr. Duke

Abortifacient

1. Dr. Duke

Acaricide

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allelochemic

1. Dr. Duke

Allelopathic

1. Dr. Duke

Allergenic

1. Dr. Duke