the flowers of limnophila heterophylla

inflorescences heterophylla centimeters millimeters rectangular limnophila fragmented bracteoles wildflower perennial submerged structure embracing extremely spherical flowering hairless parallel arranged flowers aquatic covered sessile whorled rounded stripes corolla capsule blossom produce aerial glands smooth leaves length raised single purple period flower nature branch spring autumn garden meadow benth hairs lobed shape teeth veins stems loose spike short axils small calyx fruit light plant shrub green petal lilac leaf tree herb