Euphorbia rigida M. Bieb.
Upright Myrtle Spurge
|Kingdom||Plantae||Plants, but not fungi, lichens, or algae (from Stearn’s Botanical Latin)|
|Subkingdom||Tracheobionta||Vascular plants—plants with a “circulatory system” for delivering water and nutrients|
|Division||Magnoliophyta||Flowering plants, also known as angiosperms|
|Class||Magnoliopsida||Dicotyledons—plants with two initial seed leaves|
|Subclass||Rosidae||Roses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more|
|Order||Malpighiales||A broad group encompassing 16,000 species|
|Family||Euphorbiaceae||Euphorbia or spurge family|
|Genus||Euphorbia||An extremely diverse-looking genus of mostly tropical and subtropical succulent plants. For Euphorbus, corpulent Greek physician of Juba II, King of Mauretania. Literally, “euphorbia” means “well-fed”|
|Species||rigida||Rigid, referring to the stiff leaves|
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Euphorbia rigida description by Thomas H. Kent, last updated 16 Nov 2013.
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5/25/2009 · Boyce Thompson Arboretum, Superior, AZ
≈ 5 × 3½' (1.6 × 1 m)
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