Lacy Ambrosia

Names and Synonyms

Common Names

• Lacy Ambrosia
• bur ragweed
• lacy ragweed
• narrow-leaf ragweed
• slimleaf burr ragweed

Scientific Names

Accepted name

Synonyms

• Gaertneria tenuifolia
• Ambrosia longistylis
• Ambrosia simulans
• Franseria tenuifolia
• Xanthidium tenuifolium

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Asterales, it is classified under the family Asteraceae. It is further identified by the genus Ambrosia, specifically as the species Ambrosia tenuifolia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical distribution across several European regions. In Middle Europe, it can be found growing within Germany. Its presence extends to Southwestern Europe, specifically inhabiting the Balearic Islands, France, and Spain. Additionally, the species is located in Southeastern Europe, particularly in Italy. These varied locations highlight the wide range of habitats this medicinal plant occupies.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Ambrosia tenuifolia is characterized by its adaptability to varied environments, ranging from sea level up to an elevation of 1000 m AMSL. This species is frequently found in anthropized areas (Área Antrópica), demonstrating a capacity to colonize landscapes modified by human activity, as well as within the specialized coastal ecosystems of Restinga. Its distribution across this elevational gradient and its presence in both disturbed and coastal habitats highlight its resilience within diverse ecological niches.

Elevational range max:

1000 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Área Antrópica, Restinga

Life history

The life history of Ambrosia tenuifolia is characterized by its classification as a perennial plant, allowing it to persist across multiple growing seasons. In terms of its biological structure and survival strategy, it exhibits a complex life form profile, functioning as both a geophyte and a therophyte. As a geophyte, it relies on underground organs to survive unfavorable periods, while its therophyte nature indicates its capacity to complete its reproductive cycle via seeds, often leaving behind ephemeral aerial parts after the growing season.

Life form :

geophyte

Life form :

therophyte

Lifecycle :

perennial

Morphology

The morphology of Ambrosia tenuifolia is characterized by its growth form as a non-woody herb and specifically a forb. It is a self-supporting plant that does not function as a climber, liana, or vine, nor does it exhibit climbing behaviors. In terms of its ecological habit, the species is terrestrial rather than aquatic or semiaquatic, and it exists as an independent organism without parasitic tendencies. It does not function as an epiphyte, maintaining a strictly terrestrial existence. Regarding its physical dimensions, the plant is relatively small, reaching a maximum height of 1 meter.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

1 m

Woodiness :

non-woody

Physiology

The physiology of Ambrosia tenuifolia is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in varying environmental conditions. The structural morphology of its foliage plays a critical role in its physiological performance, with leaf dimensions ranging from a minimum length of 2 cm to a maximum length of 8 cm. Furthermore, the leaf width varies between 4 cm and 5 cm, providing a specific surface area optimized for gas exchange and light interception consistent with its C3 metabolic framework.

Leaf length max:

8 cm

Leaf length min:

2 cm

Leaf width max:

5 cm

Leaf width min:

4 cm

Photosynthetic pathway :

C3

Reproduction

The reproduction of Ambrosia tenuifolia involves both sexual and asexual mechanisms to ensure its survival and dispersal within its habitat. Sexual reproduction is primarily facilitated through the production of small, inconspicuous flowers, which are typically wind-pollinated (anemophilous), leading to the development of seeds that serve as the main agent for long-distance colonization. In terms of its asexual reproduction, the presence of certain vegetative capabilities allows the plant to spread locally; however, the specific expression of these traits can vary, meaning that while asexual reproduction is present, its dominance or frequency may be absent or limited depending on environmental conditions and the specific life cycle stage of the individual.

Reproduction asexual :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Ambrosia tenuifolia has 3 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Hispidulin, Peruvin, Psilostachyin.

Hispidulin

1. The American journal of tropical medicine and hygiene

Peruvin

1. Antimicrobial agents and chemotherapy

Psilostachyin

1. Antimicrobial agents and chemotherapy

Conditions

Ambrosia tenuifolia has 3 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include Chagas' disease, Leishmania mexicana, leishmaniasis.

Chagas' disease

1. Antimicrobial agents and chemotherapy

Leishmania mexicana

1. The American journal of tropical medicine and hygiene

Leishmaniasis

1. Antimicrobial agents and chemotherapy

Preparations

Ambrosia tenuifolia has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include organic extracts.

Organic extracts

1. Parasitology research