Panicum hemotomum

Names and Synonyms

Common Names

• maidencane
• pifine grass

Scientific Names

Accepted name

Synonyms

• Brachiaria digitarioides
• Oplismenus colonum var. walteri
• Panicum digitarioides
• Hymenachne hemitoma
• Panicum carolinianum

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling within the class Equisetopsida and subclass Magnoliidae. It is further classified under the order Poales and the family Poaceae. Finally, it is identified by the genus Panicum, specifically as the species Panicum hemitomon.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a varied geographical distribution across several regions of the United States. In the Northeastern U.S.A., it can be specifically found in the state of New Jersey. Its presence extends into the South-Central U.S.A., where it inhabits parts of Texas. Within the Southeastern U.S.A., the species is recorded in Alabama and Delaware. Additionally, the plant is known to grow throughout the state of Florida.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Panicum hemitomon is characterized by its perennial lifecycle, allowing the plant to persist through multiple growing seasons. In terms of its structural development and survival strategy, it is classified as a hemicryptophyte, meaning its perennial buds are located at or just below the soil surface, protected by leaf litter or soil during unfavorable conditions. This life form, consistent with its identification as a hemicryptophyte, enables the plant to regenerate effectively from its basal structures after periods of dormancy or environmental stress.

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Panicum hemitomon is characterized by its growth form as a graminoid herb, displaying a non-woody structure throughout its development. It functions as an independent organism rather than a parasite and maintains a terrestrial habitat, lacking aquatic or epiphytic tendencies. While it possesses self-supporting characteristics in its climbing habit, it does not rely on obligatory climbing mechanisms, allowing it to maintain its structural integrity as a self-supporting graminoid.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

graminoid

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Panicum hemitomon is fundamentally characterized by its C3 photosynthetic pathway, a metabolic process where carbon dioxide is fixed directly into a three-carbon compound during the Calvin cycle. This mechanism involves the enzyme RuBisCO facilitating the carboxylation of ribulose-1,5-bisphosphate, which is the primary method for converting light energy into chemical energy within the plant's chloroplasts. Because it utilizes the C3 pathway rather than C4 or CAM, its carbon assimilation efficiency is highly dependent on environmental conditions, particularly temperature and moisture levels, as it is more susceptible to photorespiration under high-temperature or water-limited conditions. This physiological framework dictates its metabolic rate, water-use efficiency, and overall carbon sequestration capabilities within its specific ecological niche.

Photosynthetic pathway :

C3

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Panicum hemitomon has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include MERCURY.

MERCURY

1. International journal of phytoremediation