. Gray's school and field book of botany. Consisting of "Lessons in botany," and "Field, forest, and garden botany," bound in one volume. Botany; Botany. 250. A blossom Laving stamens and no pistil is a Staminate or Male flower. Sometimes it is called a Sterile flower, not appropriately, for other flowers may equally be sterile. One having pistil but no stamens is a Pistillate or Female flower. 251. Incomplete Flowers are so named in contradistinction to complete : they want either one or both of the floral envelopes. Those of Fig. 230 are incomplete, having ca- lyx but no
. Gray's school and field book of botany. Consisting of "Lessons in botany," and "Field, forest, and garden botany," bound in one volume. Botany; Botany. 250. A blossom Laving stamens and no pistil is a Staminate or Male flower. Sometimes it is called a Sterile flower, not appropriately, for other flowers may equally be sterile. One having pistil but no stamens is a Pistillate or Female flower. 251. Incomplete Flowers are so named in contradistinction to complete : they want either one or both of the floral envelopes. Those of Fig. 230 are incomplete, having ca- lyx but no corolla. So is the flower of Anem- one (Fig. 233), although its calyx is colored like a corolla. The flowers of SaururusorLizard's-tail, iaa although perfect, have neither calyx nor corolla (Fig. 234). Incomplete flowers, accordingly, are Naked or Achlamydeous, destitute of both floral en- velopes, as in Fig. 234, or Apetalous, when wanting only the corolla. The case of corolla present and calyx wholly wanting is extremely rare, although there are seeming instances. In fact, a single or simple perianth is taken to be a calyx, unless the absence or abortion of a calyx can be made evident. 252. In contradistinction to regular and symmetrical, very many flowers are Irregular, that is, with the members of some or all of the floral circles unequal or dissim- ilar, and TJnsymmetrical, that is, when the circles of the flower or some of them differ in the num- ber of their members.* (Sym- metrical and unsymmetrical are used in a different sense in some recent books, but the older use should be adhered to.) Want of numerical symmetry and irregularity commonly go to- gether; and both are common. Indeed, few flowers are entirely 236. Fig. 233. Flower of Anemone Pennsylvanioa; apetalous, hermaphrodite. Fig. 234. Flower of Sauninis or Lizard's-tail; naked, but hermaphrodite. Fig. 235. Flower of Mustard. 236. Its stamens and pistil separate and enlarged. Fio. 237. Flower of a Violet. 238. It
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