hoary gromwell

Names and Synonyms

Common Names

• hoary gromwell
• Indian-paint
• puccoon

Scientific Names

Accepted name

Synonyms

• Lithospermum canescens f. pallidum
• Batschia sericea
• Batschia conspicua
• Lithospermum sericeum
• Batschia canescens
• Lithospermum conspicuum

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is categorized under the order Boraginales and the family Boraginaceae. Finally, its specific taxonomic designation is placed within the genus Lithospermum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide geographical distribution across both Canada and the United States. In Western Canada, its presence is recorded in the provinces of Manitoba and Saskatchewan. Moving toward Eastern Canada, the species can also be found within Ontario. Its range extends into the North-Central United States as well. Specifically, this medicinal plant is documented to grow in the states of Illinois and Iowa.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Lithospermum canescens is characterized by its status as a perennial plant, meaning it lives for more than two years and undergoes multiple growing seasons. As a perennial, the species establishes a persistent root system that allows it to survive periods of dormancy and re-emerge annually to complete its reproductive cycle. Throughout its life cycle, the plant transitions through various developmental stages, including vegetative growth where it establishes foliage and root structures, followed by reproductive phases where it produces flowers and seeds to ensure the continuation of the species. This perennial nature provides the plant with a degree of resilience, enabling it to persist in its habitat over long durations compared to annual or biennial species.

Lifecycle :

perennial

Morphology

The morphology of Lithospermum canescens is characterized by its growth form as a non-woody herb and specifically a forb. It functions as a self-supporting plant, exhibiting both self-supporting and facultative climbing tendencies rather than acting as an obligatory liana or vine. In terms of its ecological niche and habitat, the plant is terrestrial rather than aquatic or semiaquatic, and it exists as a terrestrial species rather than an epiphyte. Furthermore, it is an independent organism, lacking any parasitic nature.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Lithospermum canescens is characterized by a C3 photosynthetic pathway, which dictates its metabolic processes and carbon fixation strategies. Within this pathway, the plant utilizes the enzyme Rubisco to fix atmospheric carbon dioxide directly into a three-carbon molecule during the Calvin cycle, a process that typically occurs within the mesophyll cells. This metabolic framework implies that the plant's energy production is highly dependent on efficient stomatal conductance to manage gas exchange while balancing transpiration rates. The reliance on the C3 mechanism suggests that its physiological efficiency and growth rates are closely tied to environmental factors such as temperature, light intensity, and water availability, as the plant must navigate the potential for photorespiration when moisture levels are low or temperatures rise.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Lithospermum canescens is characterized by a specific seasonal flowering window and highly consistent seed characteristics. The flowering period typically commences in March and reaches its conclusion in June, though the timing can remain variable depending on environmental conditions. During the reproductive phase, the plant produces seeds that exhibit a remarkable level of uniformity in mass; both the mean, minimum, and maximum seed mass are recorded at a precise value of 0.002817 g. This lack of variance in seed weight suggests a highly standardized approach to seed production within the species.

Flowering time :

Mar

Flowering time :

Jun

Seed mass mean:

0.002817 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Lithospermum canescens has 3 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Canescine, Lycopsamine, O7-Acetylintermedine.

Canescine

1. Zeitschrift fur Naturforschung. C, Journal of biosciences

Lycopsamine

1. Zeitschrift fur Naturforschung. C, Journal of biosciences

O7-Acetylintermedine

1. Zeitschrift fur Naturforschung. C, Journal of biosciences

Preparations

Lithospermum canescens has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include aqueous extracts.

Aqueous extracts

1. Phytotherapy research : PTR