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
Nemophila heterophylla each a few millimetres long, pointed, and covered with long hairs, and there are reflexed appendages between the sepals. The bowl-shaped flower corolla is white or blue and a few millimeters to over a centimeter wide. The fruit is a capsule which develops within the calyx of sepals and contains a few yellowish seeds. Nemophila heterophylla Nemophila heterophylla is a species of flowering plant in the borage family known by the common name small baby blue eyes. It is native to South east UK and California north of the Transverse Ranges. It grows in many types of habitat, from valley