Are Tabernaemontana and Caltha both genus of flowering plants ?
Caltha Caltha is a genus of rhizomatous perennial flowering plants in the family Ranunculaceae ("buttercup family"), to which ten species have been assigned. They occur in moist environments in temperate and cold regions of both the Northern and Southern Hemispheres. Their leaves are generally heart-shaped or kidney-shaped, or are characteristically diplophyllous (the auricles of the leaf blades form distinctly inflexed appendages). Flowers are star shaped and mostly yellow to white. True petals and nectaries are missing but the five or more sepals are distinctly colored. As usual in the buttercup family there is a circle of stamens around (two to twenty-five) free carpels.
Caltha appendiculata Caltha appendiculata is a low (2½-7 cm high) dioecious, perennial herb, often growing in dense clusters over considerable areas, with thick rhizomes. The strong stems are sparingly branched, somewhat elongated, and covered by the remains of old sheaths. Its thick and fleshy leaves consist of a short leafstalk and a blade of between six and ten mm long, which is ovate, elliptical or oblong in outline, has an entire margin or is split into three lobes, and usually is retuse at the tip. Near the midrib on the upward leaf face are two or three narrow leaflike outgrowths. This makes the leafblade in its entirety reminiscent of an opened book. These appendages are in fact homologous with the ears at the base of the leafblade of Northern Hemisphere "Caltha" species.