The fruit of Opuntia fulgida by Johnson D.S.

By Johnson D.S.

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Persist over winter, then THE FRUIT OF OPUNTIA FULGIDA. 44 In other species, such as the flat- jointed Opimtia discata, the disturbance of the normal development of the flower and fruit hj the laying of the eggs of Asphondylia is never so marked as in Opuntia versicolor. The perianth of this species that it is always shed, leaving a definite This probably means scar. develops to maturity and then opens more or less completely. The general form and size of the resulting fruit are relatively little affected (fig.

Way end of from the at the the growing-season, but (as noted above) they are neither shed to discharge their and and 70 the contrary, these fruits remain year after year, attached actively growing, until they may become 40 or 50 mm. in diameter The growth of these fruits in length must be chiefly or 80 mm. long. primary that is, each fruit attains practically its maximum length during Thus the longer fruits mentioned must have been its first season's growth. ; exceptionally long at the start. Growth secondary.

There may sometimes be an ovarian cavity filling three-fifths of the diameter of the fruit, or this cavity may be practically wanting. About half the mature fruits contain one or more ripe seeds, which vary in from number 100 or 200 per fruit. The other half of the fruits have only small ovarian cavities in which the seed rudiments have ceased their development at different stages from half-formed ovules up to half-grown seeds (fig. 23). In some cases not even these withered rudiments can be found in the place where the ovarian cavity should be.

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