THE FLOWER 197 
greenish leaves, sepals; the inner, lighter-colored ones, 
petals. The sepals taken together form the calyx, and the 
petals, the corolla. Where the petals and sepals are all 
267 
265 
Fics. 265-267.— Flower of a monocotyl (star-of-Bethlehem), with superior 
ovary dissected: 265, entire flower, showing the different sets of organs: pet, 
petals; sep, sepals; sta, stamens; pist, pistil; ped, peduncle; 266, side view with 
all the petals and sepals but two removed to show order of the parts: r, recepta- 
cle; 0, ovary; sty, style; stig, stigma—parts composing the pistil; f, filament ; 
a, anther—parts composing the stamen; 267, cross section of the ovary: c, c, car- 
pels ; ov, ovules ; pl, placenta. 
separate and distinct, as in the tulip and the star-of-Bethle- 
hem, the corolla is said to be polypetalous and the calyx 
polysepalous, words meaning, respectively, many-petaled 
and many-sepaled. Monopetalous and monosepalous, or 
268 269 
Fics. 268-269.— Yucca blossom: 268, external view: br, bract; pd, peduncle ; 
r, receptacle; s, sepal; pet, petal; 269, vertical section: ped, peduncle; br, bract; 
r, receptacle; per, perianth; sta, stamen; v, ovary; sty, style; sig, stigma. The 
last three parts named compose the pistil. 
sympetalous and synsepalous, are terms used to describe a 
condition in which the petals or sepals are all united into 
one, as in the morning-glory and lily of the valley. In many 
