Plant Image
Flowers and fruit


Yavapai County Native & Naturalized Plants

Euphorbia palmeri - woodland spurge

Synonyms: Euphorbia lurida
Other Common Names: wood spurge
Plant Form: Forb or Subshrub

Family: Euphorbiaceae


   
 
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Leaves
Desert Botanical Gardens Herbarium Collection, Usage rights: Attribution-Non-Commercial(CC BY-NC)
Plant
Patrick Alexander @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Perennial
General Desc: Rootstock thick; stems ascending to erect, unbranched, sometimes wavy, smooth, without hairs, 4 to 14 inches tall; stems have milky juice.
Identification notes: Stems ascending to erect; stem leaves oblong to round, widest above middle, flower leaves wider than long; 5 clusters of male flowers surround 1 female flower; glands with rounded teeth on margins, without petal-like appendages and slightly 2-horned.
Height: 4 to 14 inches


Habitat

Habitat Description: Dry slopes, flats, canyons, open pine-oak forests, roadsides, fields, and clearings.
Plant Communities: Pinyon Juniper Woodland, Montane Conifer Forest, Disturbed Areas
Elevation: 4000 - 8000 feet


Flower Characteristics

Color: Yellow     Shape: Regular in round clusters     Tubular: N     Flowering Period: Apr - Jun
Description: Yellow bracts join to form tiny cup (involucre); 5 clusters of male flowers surround 1 female flower with 3 ovary chambers, 1 seed per chamber, 3 styles, divided; glands with rounded teeth on margins, without petal-like appendages, slightly 2-horned.


Leaf and Stem Characteristics

Leaf Color: Light green     Leaf Type: Simple     Leaf Shape: Round or oval     Leaf Margin: Smooth     Leaf Attachment: Alternate     Leaves Clasp: N
Hairs: No     Spines: N
Leaf Description: Light green, generally alternate, fleshy, numerous; oblong to round, wider than long, to 3/8 inch wide and 1/4 inch long; margins smooth, tip pointed to rounded.


Fruit and Seed Characteristics

Fruit Type: Capsule
Fruit Notes: Capsules egg-shaped and about 1/4 inch long.
Seed Notes: Seeds ashy (gray), oblong and about 1/8 inch long, with a brown caruncle (appendage at attachment of seed), which is easily removed; surface net-like; irregularly pitted.



  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
http://cales.arizona.edu/yavapaiplants/SpeciesDetailForb.php  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
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