Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Tilesius Wormwood - Artemisia tilesii

No photos are currently available
If you have a high quality photo of this species, are confident in the identification, and would like to submit it for inclusion on the Montana Field Guide, please send it to us using our online photo submission tool.


Image Copyright and Usage Information
Species of Concern
Native Species

Global Rank: G5
State Rank: S3
(see State Rank Reason below)
State Threat Score: No Known Threats
C-value: 4


Agency Status
USFWS:
USFS:
BLM:


 

External Links

State Rank Reason (see State Rank above)
Artemisia tilesii is known from seven locations located at higher elevations in western Montana. This species can be difficult to separate from Artemisia ludoviciana and A. michauxiana. Survey work to identify occurrences, determine population sizes, and assess threats is greatly needed.
  • Details on Status Ranking and Review
    Tilesius Wormwood (Artemisia tilesii) Conservation Status Review
    Review Date = 06/21/2018
    View State Conservation Rank Criteria
    Range Extent

    ScoreF - 20,000-200,000 sq km (~8,000-80,000 sq mi)

    Area of Occupancy

    ScoreD - 6-25 4-km2 grid cells

    Number of Populations

    ScoreB - 6 - 20

    Number of Occurrences or Percent Area with Good Viability / Ecological Integrity

    ScoreB - Very few (1-3) occurrences with excellent or good viability or ecological integrity

    Environmental Specificity

    ScoreB - Narrow. Specialist or community with key requirements common

    Threats

    ScoreD - Low

    CommentNo known threats.

 
General Description
PLANTS: Herbaceous perennial that grows from coarse rhizomes (FNA 2006). Stems are simple (sometimes 2-3), erect, 30–80 cm, white, tomentose or glabrate, and mildly aromatic (Lesica et al. 2012; FNA 2006).

LEAVES: Basal and cauline blades are bicolor (green and white), linear to broadly lanceolate, 3-7(10) cm by 2-5(-6) cm, and coarsely pinnately lobed with ultimate segments acute (FNA 2006). Leaves are glabrate above (Lesica et al. 2012).

INFLORESCENCE: A narrow, leafy panicle (Lesica et al. 2012).

Phenology
Flowering mid-summer to early fall (FNA 2006).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
AK to QC south to OR, ID and MT (Lesica et al. 2012).

Observations in Montana Natural Heritage Program Database
Number of Observations: 8

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Grasslands and meadows in the montane and subalpine zones of Montana (Lesica et al. 2012).
Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see mtnhp.org/models

Ecology
Sagebrush in general is adapted to climates with cold winters where most precipitation falls in the winter (Meyer 2008). Shrubs in the genus Artemisia are important winter browse for ungulates (Meyer 2008). This species relies on wind for pollination and seed dispersal (Meyer 2008). Each seed is enclosed in a papery pericarp. The pericarp has mucilaginous nerves that may help the seed stick to the soil while its root penetrates (Meyer 2008).


Threats or Limiting Factors
STATE THREAT SCORE REASON
Threat impact not assigned because threats are not known (MTNHP Threat Assessment 2021).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Flora of North America Editorial Committee. 2006. Flora of North America North of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York. xxiv + 579 pp.
    • Flora of North America Editorial Committee. 2006. Flora of North America North of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Meyer, S.E. 2008. Artemisia L. in Bonner, F.T. and R.P. Karrfalt. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC: USDA, Forest Service. 1223 p.
    • MTNHP Threat Assessment. 2021. State Threat Score Assignment and Assessment of Reported Threats from 2006 to 2021 for State-listed Vascular Plants. Botany Program, Montana Natural Heritage Program, Helena, Montana.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Tilesius Wormwood"
Login Logout

Take us with you! PDF icon

Look for this PDF icon as you search and browse.  Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level.  To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Mammals
Birds
Reptiles
Amphibians
Fish
Invertebrates
Butterflies / Moths
Dragonflies / Damselflies
Ferns and allies
Conifers
Flowering Plants (Dicots)
Flowering Plants (Monocots)
Bryophytes
Lichens
Ecological Systems
Noxious Weeds
Citation for data on this website:
Tilesius Wormwood — Artemisia tilesii.  Montana Field Guide.  .  Retrieved on , from