Illinois Natural History Survey - University of Illinois

Euphorbia cyathophora
Wild poinsettia
Taxonomy

Synonyms: Euphorbia heterophylla var. graminifolia, Euphorbia heterophylla var. cyanthophora, Poinsettia cyathophora, Poinsettia cyanthophora, Poinsettia cyanthophora graminifolia

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
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Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

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F
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M
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A
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M
0
J
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J
0
A
0
S
0
O
0
N
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D
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Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:DUPLICATE

Origin: Native

Species Description

General: Dicot-herb, annual

Roots: primary

Shoots: alternate leaf arrangment; simple leaf type; entire, undulate, serrate leaf margin; Pinnate leaf venation

Inflorescence: other

Flowers: unisexual, monoecious; incomplete, not petals, not sepals; hypogynous ovary position

Fruit: capsule

Physiology: autotrophic

Ecology & Natural History

Habitat: Found along roadsides, on waste ground, and on eroded, south facing banks. Found in open or rocky woods.

ILPIN Notes: Flowers arranged in a cyathium in terminal clusters. Milky sap may cause a dermatitis.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 0
  • Chicago Area:

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