Plant reproductive morphology is asexual, producing only spores. Similarly, flowers produced by the sporophyte may be described as "unisexual" or "bisexual", meaning that they give rise to either one sex of gametophyte or both sexes of gametophyte. The flower is the characteristic structure concerned with sexual reproduction in flowering plants (angiosperms). Flowers vary enormously in their construction (morphology). A "complete" flower, like that of "Ranunculus glaberrimus" shown in the figure, has a calyx of outer sepals and a corolla of inner petals. The sepals and petals together form the perianth. Next inwards there are numerous stamens, which produce pollen grains, each containing a
Gilia clokeyi an inflorescence bearing tiny flowers on thin pedicels. The flower has a pouchlike calyx of sepals made up of ribs with membranous tissue between. The corolla emerges from the calyx, its narrow tubular throat yellow and white spotted and its face white and blue spotted or streaked. Gilia clokeyi Gilia clokeyi is a species of flowering plant in the phlox family known by the common name Clokey's gilia. It is native to the southwestern United States from California to Colorado, where it grows in desert and other habitat. The herb produces an erect stem up to 17 centimeters tall often