longleaf pine

Names and Synonyms

Common Names

• Florida Pine
• Georgia Pine
• Longleaf Pine
• longleaf yellow pine
• pitch pine
• southern pine
• southern yellow pine
• hard pine
• heart pine
• hill pine
• long-leaved pine
• longstraw pine

Scientific Names

Accepted name

Synonyms

• Pinus palustris var. excelsa
• Pinus australis var. excelsa
• Pinus palustris subsp. neogigantea
• Pinus taeda var. palustris
• Pinus australis

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Pinus palustris, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Pinidae, it is categorized under the order Pinales and the family Pinaceae. Finally, it is classified under the genus Pinus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known as Pinus palustris, exhibits a specific range across the southern United States. In the South-Central region, its presence can be found in Texas. Moving into the Southeastern United States, the species is widely distributed across Alabama. It also inhabits the forested landscapes of Arkansas within the same southeastern territory. Finally, this medicinal plant extends its reach through the states of Georgia and Florida.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Pinus palustris is characterized by its status as a perennial organism, allowing it to persist through many growing seasons and establish long-term dominance within its ecosystem. As a phanerophyte, the plant maintains its photosynthetic structures on elevated stems well above the soil surface, a life form that facilitates its structural height and ability to compete for sunlight. This phanerophyte growth habit ensures that its vital organs are protected and positioned to maximize environmental interaction throughout its extended lifespan.

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Pinus palustris is characterized by its robust growth form as a large tree, reaching a significant mean plant height of approximately 37 m. It is a strictly terrestrial species, neither aquatic nor epiphytic, and functions as an independent organism rather than a parasite. The plant exhibits a woody constitution and is entirely self-supporting, lacking any climbing or liana-like characteristics.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height mean:

37 m

Woodiness :

woody

Physiology

The physiology of Pinus palustris is characterized by a robust metabolic framework optimized for long-lived perennial growth in nutrient-poor, sandy soils. A defining aspect of its carbon assimilation is its photosynthetic pathway, which operates exclusively via the C3 mechanism. This C3 pathway involves the direct fixation of atmospheric carbon dioxide by the enzyme RuBisCO within the mesophyll cells, a process that requires careful physiological regulation to minimize photorespiration, especially during periods of high light intensity or water stress. To mitigate transpirational water loss while maintaining gas exchange, the plant utilizes specialized xerophytic adaptations, including thick cuticles and sunken stomata that regulate the diffusion of gases. Furthermore, its physiological resilience is supported by a sophisticated hydraulic system capable of maintaining water transport through tracheids, even under significant tension, ensuring that the metabolic demands of the C3 photosynthetic process are met throughout the growing season.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Pinus palustris is characterized by a specialized seed production and dispersal mechanism designed for efficient propagation. The plant produces seeds with varying dimensions, exhibiting a seed mass that ranges from a minimum of 0.068 g to a maximum of 0.1111 g, with a calculated mean seed mass of approximately 0.094174762 g. In terms of its reproductive strategy, the species utilizes an anemochorous dispersal syndrome, meaning its seeds are primarily dispersed by wind, allowing them to travel across the landscape to colonize new areas.

Dispersal syndrome :

anemochorous

Seed mass max:

0.1111 g

Seed mass mean:

0.094174762 g

Seed mass min:

0.068 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Pinus palustris has 21 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include (-)-Nortrachelogenin, 3-Carene, ABIETIC ACID, ALPHA-PINENE, BETA-PHELLANDRENE.

(-)-Nortrachelogenin

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3-Carene

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ABIETIC ACID

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ALPHA-PINENE

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BETA-PHELLANDRENE

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BETA-PINENE

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CAMPHENE

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DEHYDROABIETIC ACID

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Dipentene

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EO

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Activities

Pinus palustris has 44 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Allelochemic, Allelopathic, Allergenic, Analgesic, Antiacetylcholinesterase.

Allelochemic

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Allelopathic

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Allergenic

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Analgesic

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Antiacetylcholinesterase

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Antiacne

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Antibacillary

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Antibacterial

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Antifeedant

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Antiflu

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