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Montana Field Guide

Montana Field Guides

Golden Alexanders - Zizia aptera


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

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General Description
Glabrous, fibrous-rooted perennial. Stems erect, 10–50 cm. Leaves serrate, dimorphic; basal leaves petiolate, simple; blade cordate, 1-8 cm long; upper leaves sessile, ternate with ovate leaflets. Umbels compact; rays 1–3 cm long, sometimes scabrous; involucral bracts absent or 1; involucel bracts linear, 2–5 mm long. Flowers yellow; sepals present; stylopodium absent. Mericarps glabrous, 2–4 mm long, ellipsoid, moderately compressed parallel to the commissure; ribs raised, not winged; oil tubes solitary in the intervals (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Our only species of Zizia in Montana. Previous reports of Zizia aure for Montana are referrable here.

Species Range
Present
 


Range Comments
Zizia aptera ranges from Connecticut to Georgia, to Missouri and Michigan and the Dakotas the western states and Canadian provinces. There is one historical record from Rhode Island (Enser 1989). The sole record from Kansas is a misidentified specimen of Z. aurea (Freeman 1989).

Summary of Observations Submitted for Montana
Number of Observations: 23

(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
Moist, often alkaline meadows, woodlands; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Golden Alexanders — Zizia aptera.  Montana Field Guide.  .  Retrieved on , from