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Montana Field Guides

Henderson's Wavewing - Cymopterus longilobus

Status Under Review
Native Species

Global Rank: GNR
State Rank: S3

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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General Description
Acaulescent with a woody, branched caudex covered in stiff, old petioles. Herbage glabrous. Leaves with long petioles, swollen basally; blades 2–10 cm long, linear-lanceolate in outline, bipinnate; ultimate segments linear, well-separated, 2–5 mm long. Umbels solitary; peduncles 2–30 cm long, erect; rays unequal, 5–30 mm long; involucral and involucel bracts linear, 5–10 mm long. Flowers yellow; sepals scarious-margined, ca. 1 mm long. Mericarps glabrous, elliptic, 3–6 mm long; ribs nearly plane, 1–1.5 mm wide; oil tubes 1 to 5 per interval (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Beaverhead and Carbon counties; MT south to NV, UT and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 19

(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
Talus and stony soil of open slopes; subalpine to alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Steele, R. W. 1971. Red alder habitats in Clearwater County, Idaho. Unpublished thesis, University of Idaho, Moscow. 88 pp.
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Citation for data on this website:
Henderson's Wavewing — Cymopterus longilobus.  Montana Field Guide.  .  Retrieved on , from