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Euphorbia cyathophora Murray
Wild Poinsettia, Poinsettia, Fire On The Mountain
Euphorbiaceae (Spurge Family)
Synonym(s): Euphorbia barbellata, Euphorbia graminifolia, Euphorbia havanensis, Euphorbia heterophylla var. barbellata, Euphorbia heterophylla var. cyathophora, Euphorbia heterophylla var. graminifolia, Poinsettia barbellata, Poinsettia cyathophora, Poinsettia cyathophora var. graminifolia, Poinsettia graminifolia, Poinsettia havanensis
USDA Symbol: eucy
USDA Native Status: L48 (N), HI (I), PR (N), VI (N)
The dwarf poinsettia has green stems and alternate lobed leaves, the uppermost with irregular red blotches near the base. The terminal flowers are yellowish with 1-2 small glands or nectaries.
Fire-on-the-mountain is a member of the spurge family (family Euphorbiaceae). Spurges are commonly herbs, with milky sap; in the tropics also includes shrubs or trees. There are about 290 genera and 7,500 species, mostly of warm or hot regions. Among the valuable products of the family are rubber, castor and tung oils, and tapioca. Most members of the family are poisonous, and their milky sap will irritate the membranes of the eyes and mouth.
From the Image Gallery
Plant CharacteristicsDuration: Annual
Leaf Shape: Oblanceolate
Leaf Pubescence: Glabrous
Leaf Margin: Lobed
Leaf Texture: Smooth
Fruit Type: Capsule
Size Notes: Up to about 3 feet tall.
Leaf: The upper or bracteal leaves usually red toward the base.
Flower: Flowers 3-5 mm
Fruit: 4.5-5 mm
Bloom InformationBloom Color: Yellow , Green
Bloom Time: May , Jun , Jul , Aug , Sep , Oct , Nov
DistributionUSA: AL , AR , AZ , CA , FL , GA , HI , IA , IL , IN , KS , KY , LA , MN , MO , MS , NC , NE , NM , OH , OK , SC , SD , TN , TX , UT , VA , WI
Growing ConditionsWater Use: Medium
Light Requirement: Sun
Soil Moisture: Moist
Soil Description: Sandy, Sandy Loam, Medium Loam, Clay Loam
BenefitUse Ornamental: Accent, Garden. A good filler plant but can be invasive.
Conspicuous Flowers: yes
Interesting Foliage: yes
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Fredericksburg Nature Center - Fredericksburg, TX
Lady Bird Johnson Wildflower Center - Austin, TX
Jacob's Well Natural Area - Wimberley, TX
Herbarium Specimen(s)NPSOT 0336 Collected May 24, 1987 in Bexar County by Harry Cliffe
BibliographyBibref 946 - Gardening with Prairie Plants: How to Create Beautiful Native Landscapes (2002) Wasowski, Sally
Bibref 765 - McMillen's Texas Gardening: Wildflowers (1998) Howard, D.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Euphorbia cyathophora in USDA Plants
FNA: Find Euphorbia cyathophora in the Flora of North America (if available)
Google: Search Google for Euphorbia cyathophora
MetadataRecord Modified: 2023-02-10
Research By: TWC Staff, TMH