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An antique spurge plant, Euphorbia antiquorum, sending out white rhizomes. In botany and dendrology, a rhizome (/ ˈ r aɪ z oʊ m / RY-zohm) [note 1] is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. [3] Rhizomes develop from axillary buds and ...
Euphorbia characias flowers. Euphorbiaceae (/ j uː ˈ f oʊ r b iː ˌ eɪ s i ˌ aɪ,-s iː ˌ iː /), the spurge family, is a large family of flowering plants.In English, they are also commonly called euphorbias, [2] which is also the name of the type genus of the family.
There are two types of African milk tree plants: Euphorbia trigona, the green one, and Euphorbia trigona ‘Rubra’, a predominantly red one. They require the same care, although Rubra can handle ...
The genus Euphorbia is one of the largest and most complex genera of flowering plants, and several botanists have made unsuccessful attempts to subdivide the genus into numerous smaller genera. According to the recent phylogenetic studies, [22] [23] [24] Euphorbia can be divided into four subgenera, each containing several sections and groups.
Leafy spurge also spreads vegetatively from the root system, which is complex, reported to reach 8 m into the ground and 5 m across, and may have numerous buds. [7] [8] [9] There are two subspecies and a hybrid subspecies: [2] [4] Euphorbia esula subsp. esula. Leaves broadest near apex; umbel bracts 5–15 mm. Throughout the range of the species.
Here is a full taxonomy of the family Euphorbiaceae, according to the most recent molecular research. [1] This complex family previously comprised five subfamilies: [1] the Acalyphoideae, the Crotonoideae, the Euphorbioideae, the Phyllanthoideae and the Oldfieldioideae.
As with all Euphorbiaceae species, when broken or cut, the tissue of Euphorbia caducifolia bleeds a profuse white, latex-like, phorbol-containing sap (among other alkaloids) which may be particularly painful if contact is made with mucous membranes—such as in the eyes, mouth or nose, or if it drips into a fresh cut. If sap dries on one's bare ...
Thanks to convergent evolution, these columnar, ribbed flowering plants appear to resemble cacti, although they have different forms and flowers to tell them apart; e.i. a cactus would have spines (leaf tissue) with a rose-like flower, whereas a euphorbieae would have a very basic, 3 petal shape with thorns (stem tissue).