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Montana Field Guide

Montana Field Guides

Heartleaf Four-o'clock - Mirabilis nyctaginea

Status Under Review
Native Species

Global Rank: G5
State Rank: SU

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 2

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General Description
Taprooted perennial herbs. Stems erect 35–60 cm, mostly glabrous with swollen nodes. Leaf blades ovate-lanceolate, glabrous, 4–8 cm long. Inflorescence terminal and axillary, openly cymose with umbellate clusters at branch tips; involucres 3-flowered, the bracts 5–10 mm long, light green, veiny. Flowers pink, ca. 4 mm long. Fruits pubescent, 4–6 mm long, 5-ribbed and warty (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Mostly in the southern half of MT and Hill County; across most of temperate North America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 6

(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
Sparsely vegetated gravelly or sandy soil of roadsides; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Heartleaf Four-o'clock — Mirabilis nyctaginea.  Montana Field Guide.  .  Retrieved on , from