transpecos marshtail

Names and Synonyms

Common Names

• transpecos marshtail
• Trans-Pecos Horseweed

Scientific Names

Accepted name

Synonyms

• Conyza filaginoides
• Heterochaeta stricta
• Laennecia pinnatifida

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, situated within the class Equisetopsida and subclass Magnoliidae. It is further classified under the order Asterales and the family Asteraceae. Ultimately, it is identified by the genus Laennecia as Laennecia filaeginoides.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide distribution across several key regions in North America. In the South-Central United States, its presence is specifically noted within the state of Texas. Moving into Mexico, the species is found throughout the central territories of the country. It also occupies significant portions of the Mexican Northeast and the coastal areas of the Mexico Gulf. Furthermore, the plant extends its reach into the Mexico Northwest, demonstrating a broad geographical range.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Laennecia filaeginoides is characterized by its specialization within high-altitude montane environments, specifically occupying a narrow ecological niche defined by its vertical distribution. This species is strictly found in highland regions, thriving within an elevational range that begins at 1,990 m AMSL and extends up to a maximum of 3,180 m AMSL. This altitudinal preference suggests an adaptation to the specific climatic conditions found in afro-montane or high-elevation cloud forest ecosystems, where it likely interacts with cooler temperatures, increased humidity, and specialized soil compositions unique to these heights.

Elevational range max:

3180 m AMSL

Elevational range min:

1990 m AMSL

Life history

The life history of Laennecia filaeginoides is characterized by a variable lifecycle, meaning its duration and reproductive patterns can shift depending on environmental conditions and ecological pressures. While it may exhibit tendencies toward an annual or biennial growth pattern in certain habitats, it ultimately demonstrates a variable lifespan that allows it to adapt to the specific stability of its ecosystem. This flexibility in its life cycle enables the plant to optimize its survival, transitioning between rapid reproductive cycles and longer-term growth strategies to ensure successful propagation within its natural niche.

Lifecycle :

annual

Morphology

The morphology of Laennecia filaeginoides is characterized by a growth form categorized as a non-woody herb and specifically a forb. It is a terrestrial plant, exhibiting neither aquatic nor semiaquatic tendencies, and it functions as an independent organism rather than a parasite. In terms of its structural habit, the plant is self-supporting, lacking the climbing mechanisms of a liana or vine, and it does not exhibit epiphytic behavior, remaining strictly terrestrial in its ecological positioning.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Laennecia filaginoides has 9 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include RUTIN, Erythrodiol, Astragalin, Isoquercitrin, Narcissin.

RUTIN

1. Journal of natural products
2. Pharmaceutical biology
3. Planta medica
4. The Journal of pharmacy and pharmacology

Erythrodiol

1. Journal of natural products
2. Planta medica

Astragalin

1. Journal of natural products

Isoquercitrin

1. Journal of natural products

Narcissin

1. Journal of natural products

Nicotiflorin

1. Journal of natural products

Pinostrobin

1. Planta medica

Quercetin 3-glucoside

1. Planta medica

alpha-Spinasterol

1. Planta medica

Activities

Laennecia filaginoides has 4 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antigiardial, Antinociceptive, Antispasmodic, Spasmolytic.

Antigiardial

1. Journal of natural products

Antinociceptive

1. The Journal of pharmacy and pharmacology

Antispasmodic

1. Planta medica

Spasmolytic

1. Planta medica

Preparations