a. Bot. [f. TRI- + L. petalum PETAL + -OUS.] Having, or consisting of, three petals. Also † Tripetalose a. Obs. So Tripetaloid, Tripetaloideous adjs. (of a six-parted perianth) having three of the segments petaloid.
[1688. R. Holme, Armoury, II. 118/1. Tripetala, or Tetrapetala, Flowers which consist of 3 or 4 leaves.]
1830. Lindley, Nat. Syst. Bot., 283. The *tripetaloid flower and polyspermous fruit of Xyris.
1866. Treas. Bot., 1173. Tripetaloid, consisting of six parts, of which three resemble petals, and three are green and small.
1830. Lindley, Nat. Syst. Bot., 254. These water-plants are readily distinguished from all other monocotyledons by their *tripetaloideous flowers.
1698. Petiver, in Phil. Trans., XX. 332. The Flowers [are] *tripetalose.
1704. J. Harris, Lex. Techn., s.v. Petala, Plants are distinguished into Monopetalous,… *Tripetalous, and Pentapetalous.
c. 1711. Petiver, Gazophyl., VIII. lxxi. A blew flowred tripetalous Plant, with Lilly Leaves.
1800. Hurdis, Fav. Village, 136. Fair tripetalous depending flowers.
