Golden Alexanders - Zizia aptera
MNPS Threat Rank
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)
Our only species of Zizia in Montana. Previous reports of Zizia aure for Montana are referrable here.
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).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Potential and Known Pollinators:
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans
, Bombus pensylvanicus
, and Bombus griseocollis
(Colla and Dumesh 2010).
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.