Euphorbia laeta Aiton = Euphorbia dendroides L.
English:
laetus,-a,-um;

https://archive.org/stream/mobot31753000624103#page/141/mode/2up
homotypic synonyms:
Tithymalus laetus (Aiton) Haw.;

protologue: Hort. Kew. 2: 141 (1789)

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