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Montana Field Guide

Montana Field Guides

Wild Parsnip - Pastinaca sativa

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

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General Description
Biennial or short-lived perennial from a stout taproot. Stems erect, 30–80 cm. Herbage glabrous to puberulent. Leaves basal and cauline, petiolate, 10–30 cm long; blades lanceolate, pinnate; leaflets narrowly ovate, toothed, shallowly few-lobed, 2–8 cm long. Umbel compound; peduncle 3–15 cm long; rays unequal 2–10 cm long; involucre and involucel absent. Flowers yellow; sepals absent; stylopodium low-conic. Mericarps glabrous, elliptic to suborbicular, 5–8 mm long, flattened parallel to the commissure; marginal wings ca. 0.5 mm long; dorasl ribs inconspicuous; oil tubes solitary in the intervals, visible as darkened lines (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Unknown/Undetermined
 


Range Comments
Found in open places along roadsides and in waste places throughout the northern United States and Canada, from British Columbia to California and Vermont south to Florida. It endures a wide range of edaphic conditions, usually dry to mesic soils, but occasionally will be found in wet meadows. Grows best on calcareous, alkaline soils.

Summary of Observations Submitted for Montana
Number of Observations: 1

(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

References
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Citation for data on this website:
Wild Parsnip — Pastinaca sativa.  Montana Field Guide.  .  Retrieved on , from