eastern black nightshade

(Solanum ptychanthum)

               
Conservation Status

IUCN Red List

not yet assessed

eastern black nightshade

NatureServe

N3N5 - Vulnerable to Secure

SNR - Unranked

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

FACU - Facultative upland

Midwest

FACU - Facultative upland

Northcentral & Northeast

FACU - Facultative upland

Nativity

Native

Occurrence

 

Habitat

Rocky and dry open woods, thickets, openings, lake shores. Disturbed and cultivated areas.

Flowering

June to October

     
Flower Color

White

     
Height

6 to 24

     

Identification

This is a 6 to 24 tall, erect, annual forb that rises from a slender taproot.

The stems are erect and branching and are covered with short, incurved hairs, especially near the top.

The leaves are alternate, egg-shaped to triangular, and ¾ to 3 long, to 2 wide, on long, slender leaf stalks. The margins have 2 to 5 irregular, blunt teeth on the lower half, no teeth on the upper half. There are scattered, short, incurved hairs on the upper and lower surfaces, especially on the lower surface. The underside is green when young, turning purplish or purple with age.

The inflorescence is an umbrella-shaped cluster of 3 to 10 flowers on an ascending stalk (peduncle) up to 1 long arising from the upper portion of the stem, not from leaf axils, and not at the end of the stem.

The individual flowers are on nodding, closely-clustered stalks that originate at more or less the same point at the end of the peduncle. The peduncle and the individual flower stalks are covered with short, incurved hairs. The flowers are from less than ¼ to wide. There are 5 white petals that are widely spreading, eventually curving backward, and form no tube at the base. There are 5 stamens with large yellow anthers projecting from the center of the petals. The anthers converge around the style but are not actually fused together.

The fruit is a berry, green and mottled when young, black or purplish black when ripe. At the base of the fruit the sepals (calyx) has 5 bluntly triangular lobes that are spreading and do not cup the berry.

 
Similar
Species

Common lamb’s-quarters (Chenopodium album) leaves are whitish on the underside, not purplish.


Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 28.

Comments

Taxonomy
This is a highly variable species. The names Solanum nigurm var. virginicum and Solanum americanum are often listed as synonyms. However, a distinction is sometimes made between the varieties. The proper classification of the many varieties of this plant is still a matter of debate. If they are found to be varieties of the same species, the name Solanum ptychanthum, the oldest name to be used, may be the name chosen. For that reason, MinnesotaSeasons.com will follow the example of the Wisconsin State Herbarium and use that name, treating the other names as synonyms.

Poisonous
The leaves and immature berries are poisonous. Ripe berries are not poisonous but should not be eaten.


Taxonomy

Family:

Solanaceae (nightshade)

 

Subfamily:

Solanoideae

 

Tribe:

Solaneae

 

Genus:

Solanum

 

Subgenus:

Solanum

 

Section:

Solanum

 
Synonyms

Solanum americanum

Solanum nigrum

Solanum nigurm var. virginicum

Solanum ptycanthum

 
Common
Names

black nightshade

common nightshade

deadly nightshade

nightshade

eastern black nightshade

eastern nightshade

purple nightshade

small-flowered nightshade

West Indian nightshade


 

 

 

 

 

 

 

 

 

 

Glossary

Axil

The upper angle where the leaf stalk meets the stem.

 

Calyx

The group of outer floral leaves (sepals) below the petals, occasionally forming a tube.

 

Peduncle

The stalk of a single flower or flower cluster.

       

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Inflorescence

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Leaves

  eastern black nightshade   eastern black nightshade
       
  eastern black nightshade   eastern black nightshade
       

Stem

  eastern black nightshade    
       

Infructescence

  eastern black nightshade   eastern black nightshade
       
       

 

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Other Videos

 
  Nightshade Weeds ID1
crop4240
 
   
 
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Published on Oct 29, 2012

Common Name: Eastern Black Nightshade Latin Name: Solanum ptychantum (L.)

 
     
  Black Nightshade Harvest
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Uploaded on Dec 4, 2011

Harvesting Black Nightshade from the garden. When to harvest and why.

 
     
  European Black Nightshade (Solanum Nigrum) - 2012-09-02
W3stlander
 
   
 
About

Published on Sep 5, 2012

Solanum nigrum (European Black Nightshade or locally just "black nightshade", Duscle, Garden Nightshade, Hound's Berry, Petty Morel, Wonder Berry, Small-fruited black nightshade or popolo) is a species in the Solanum genus.

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De zwarte nachtschade (Solanum nigrum) is een algemeen voorkomende tot 40 cm hoge, eenjarige plant uit de nachtschadefamilie (Solanaceae).

 
     
  Weed of the Week #651-Black Nightshade (Air Date 9/26/10)
AgPhD
 
   
 
About

Uploaded on Oct 1, 2010

Nasty to deal with at harvest, it's our Weed of the Week, Black Nightshade.

 
     
  Eastern Nightshade Wild Plant
wayne hu
 
   
 
About

Published on Sep 7, 2013

This is an weed that grown wildly in my yard. It is a poisonous plant that can cause irritation of digest system if ingested. It belongs to Nightshade family just like tomatoes do.

 
     

 

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