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Montana Field Guide

Montana Field Guides

Heartleaf Four-o'clock - Mirabilis nyctaginea

Status Under Review

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 Co.; across most of temperate North America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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