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Montana Field Guide

Montana Field Guides

Yellow Skunk-cabbage - Lysichiton americanus


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 8

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General Description
Scapose, rhizomatous perennials with a skunky odor. Leaves basal, petiolate; blades elliptic to obovate, entire, 20–100 cm long, greatly expanding in fruit. Inflorescence: scape 15–80 cm, expanding in fruit; flowers densely clustered on a cylindrical spike (spadix) 3–14 cm long, mostly enclosed by a deciduous, yellow, hood-like bract (spathe) 10–20 cm long that sheaths the scape. Flowers perfect, yellowish; tepals 4, ca. 2 mm long, separate; stamens 4; ovary superior, 1- or 2-celled; style 1. Fruit a green to red, ovoid 1- or 2-seeded berry, 3–10 mm long embedded in the fleshy spadix (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
AK to CA, ID and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 45

(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
Vernally inundated, wet, organic soil of spruce swamps, alder thickets; valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Yellow Skunk-cabbage — Lysichiton americanus.  Montana Field Guide.  .  Retrieved on , from