Hypertext Webster Gateway: "Portulacaceous"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Portulacaceous \Por`tu*la*ca"ceous\, a. (Bot.)
Of or pertaining to a natural order of plants
({Portulacace[ae]}), of which Portulaca is the type, and
which includes also the spring beauty ({Claytonia}) and other
genera.
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