heath cudweed

Names and Synonyms

Common Names

• heath cudweed
• woodland arctic-cudweed
• woodland cudweed

Scientific Names

Accepted name

Synonyms

• Gnaphalium sylvaticum var. macrostachys
• Filago sylvatica
• Cyttarium silvaticum
• Omalotheca einseleana
• Gnaphalium sylvaticum var. rectum
• Gnaphalium sylvaticum f. elongatum
• Gnaphalium sylvaticum f. serotinum
• Gnaphalium sylvaticum f. subspinum
• Gnaphalium sylvaticum var. acaule
• Gnaphalium rectum
• Artemisia sylvaticum var. scoparium
• Gnaphalium sylvaticum subvar. pumilum
• Helichrysum strictum
• Gnaphalium sophiae
• Dasyanthus sylvaticus
• Gnaphalium sylvaticum var. angustifolium
• Filago recta
• Gnaphalium sylvaticum var. citrinum
• Gnaphalium sylvaticum var. latifolium
• Gamochaeta sylvatica
• Gnaphalium mutabile
• Gnaphalium carpetanum
• Gnaphalium einseleanum
• Gnaphalium sylvaticum f. densiflorum
• Gnaphalium sylvaticum f. rariflorum
• Gnaphalium sylvaticum f. procumbens
• Gnaphalium sylvaticum f. radiciflorum
• Gnaphalium sylvaticum var. carpetanum
• Gnaphalium sylvaticum var. pallidum
• Omalotheca sylvatica subsp. carpetana
• Gnaphalium sylvaticum var. pediophilum
• Omalotheca sylvatica var. carpetana
• Gnaphalium sylvaticum var. praecox
• Synchaeta silvatica
• Gnaphalium sylvaticum var. sericeum
• Gnaphalium sylvaticum
• Gnaphalium sylvaticum var. montanum
• Gnaphalium sylvaticum var. minus
• Gnaphalium sylvaticum var. nanum
• Gnaphalium sylvaticum var. nigrescens
• Gnaphalium sylvaticum subsp. rectum
• Gnaphalium sylvaticum var. alpestre
• Gnaphalium sylvaticum var. atriceps

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. Specifically, it is identified by the genus Omalotheca, with the species name sylvatica.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known scientifically as Omalotheca sylvatica, exhibits a specific distribution across several Northern European regions. It can be found growing naturally throughout the various landscapes of Denmark. The species is also documented within the territories of Finland and Iceland. Furthermore, its presence extends to the islands of Great Britain and Ireland. Consequently, its geographical range is defined by these key northern maritime and continental locations.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Omalotheca sylvatica is characterized by a highly specific altitudinal niche, as it is consistently documented at an elevation of approximately 2000 m AMSL, with its minimum, mean, and maximum recorded ranges all converging at this level. This plant demonstrates significant environmental versatility regarding its habitat, thriving across a diverse spectrum of landscapes including cut-over forests, dense forests, and open meadows. Its ability to colonize various terrains allows it to persist in environments ranging from dry mountainous regions to plains and shrubberies, indicating an adaptability to varied moisture levels and vegetative structures within its high-altitude ecological zone.

Elevational range max:

2000 m AMSL

Habitat :

cut-over forest, forest, meadows: dry, mountains, plains, shrubberies

Life history

The life history of Omalotheca sylvatica is characterized by a perennial lifecycle, allowing the plant to persist through multiple growing seasons. As a hemicryptophyte, its perennating buds are located at or just below the soil surface, protected by leaf litter or soil during unfavorable conditions. This plant maintains an evergreen deciduousness, retaining its foliage to facilitate continuous metabolic processes.

Deciduousness :

evergreen

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

Morphologically, Omalotheca sylvatica is characterized as a non-woody herb and forb that exhibits a self-supporting growth habit rather than acting as a climber, liana, or vine. As a terrestrial plant, it grows independently without parasitic or epiphytic dependencies. The species typically maintains a relatively low stature, with plant heights ranging from a minimum of 0.1 m to a maximum of 0.8 m, resulting in an average height of approximately 0.325 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.8 m

Plant height mean:

0.325 m

Plant height min:

0.1 m

Woodiness :

non-woody

Physiology

The physiology of Omalotheca sylvatica is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in temperate environments. As a non-carnivorous species, it relies on traditional root-based nutrient uptake from the soil rather than capturing prey for nitrogen supplementation. Furthermore, the plant exhibits a Specific Leaf Area (SLA) with a mean value of 239.1 cm²/g, reflecting its leaf morphological adaptations and resource allocation strategies regarding light interception and water-use efficiency.

Carnivory :

non-carnivorous

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

239.1 cm²/g

Reproduction

The reproduction of Omalotheca sylvatica is characterized by a sexual reproductive cycle that lacks asexual reproduction. The flowering period typically commences in July and concludes in September. During this phase, the plant utilizes biotic pollination syndromes, specifically relying on insects to facilitate the transfer of pollen. The plant is capable of self-fertilization, ensuring reproductive success. Following successful pollination, the development of the fruit results in a dry, indehiscent achene. The resulting seeds are extremely fine, with a mean mass of approximately $4.1867 \times 10^{-5}$ g (ranging from a minimum of $2.6 \times 10^{-5}$ g to a maximum of $5.06 \times 10^{-5}$ g) and a mean volume of $0.0335 \text{ mm}^3$ (ranging from $0.032 \text{ mm}^3$ to $0.035 \text{ mm}^3$). Dispersal of these seeds is primarily hydrochorous, meaning they are spread via water movement.

Dehiscence :

indehiscent

Dispersal syndrome :

hydrochorous

Flowering time :

Jul

Flowering time :

Sep

Fruit dryness :

dry

Fruit type :

achene

Pollination syndrome :

insect

Pollination syndrome :

biotic

Reproduction asexual :

absent

Seed mass max:

5.06e-05 g

Seed mass mean:

4.18666666666667e-05 g

Seed mass min:

2.6e-05 g

Seed volume max:

0.035 mm³

Seed volume mean:

0.0335 mm³

Seed volume min:

0.032 mm³

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Omalotheca sylvatica has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include sylviside.

sylviside

1. Journal of natural products