Heart-leaved Four o'clock Mirabilis nyctaginea (Michaux) MacMillanAdventive  -  Non-native    Synonyms: Allionia nyctaginea, Heart-leaf Four-o'clock, Heart-leaved Umbrella-wort, Wild Four-o'clock.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Caryophyllales   >   Family Nyctaginaceae   >   Genus Mirabilis   

Status:

Perennial native to the central U.S., but has expanded east and west throughout the U.S. (and Europe). It is considered invasive in some states. Found in a variety of disturbed habitats.

Description:

Clusters of bell-shaped pinkish flowers, which open in late afternoon and close in the morning. Distinctive heart-shaped leaves opposite. Blooms May to September.

Relationships:

Moths in the family Heliodinidae use this species in the West. Although not yet documented in Maryland, there is at least one record for New Jersey (Embola ionis).

There are 45 records in the project database.

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Heart-leaved Four o'clock blooming in Anne Arundel Co., Maryland (5/28/2014). Photo by Bill Hubick. (MBP list)

Heart-leaved Four o'clock blooming in Anne Arundel Co., Maryland (5/28/2014). Photo by Bill Hubick. (MBP list)

Heart-leaved Four o'clock blooming in Anne Arundel Co., Maryland (5/28/2014). Photo by Bill Hubick. (MBP list)

Heart-leaved Four o'clock in Caroline Co., Maryland (7/7/2021). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Heart-leaved Four o'clock in Queen Anne's Co., Maryland (7/18/2017). Photo by Dan Small. (MBP list)

Heart-leaved Four o'clock in Anne Arundel Co., Maryland (5/7/2010). Photo by Bill Harms. (MBP list)

Heart-leaved Four o'clock in Anne Arundel Co., Maryland (7/30/2014). Photo by Bill Hubick. (MBP list)

Heart-leaved Four o'clock in Anne Arundel Co., Maryland (7/30/2014). Photo by Bill Hubick. (MBP list)

Heart-leaved Four o'clock in Baltimore City, Maryland (7/11/2019). (c) Brett M, some rights reserved (CC BY-NC). Photo by Brett M via iNaturalist. (MBP list)


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