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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. Description ''Caltha'' species are hairless, dwarf to medium size (1–80 cm high) perennial herbs, with alternate leaves. These leaves are simple (in all Northern Hemisphere species), or have one pair of lobes at the base (in ''C. sagittata'') which is mostly oriented at a straight angle to the larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caltha Obtusa Pollen Polar View
''Caltha'' is a genus of rhizome, rhizomatous perennial plant, perennial flowering plants in the family (biology), family Ranunculaceae ("buttercup family"), to which ten species have been assigned. They occur in moist environments in temperateness, temperate and cold regions of both the Northern Hemisphere, Northern and Southern Hemispheres. Their leaf, leaves are generally heart-shaped or kidney-shaped, or are characteristically diplophyllous (the auricles of the leaf blades form distinctly inflexed appendages). Flowers are Floral symmetry#Actinomorphic, 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. Description ''Caltha'' species are hairless, dwarf to medium size (1–80 cm high) perennial herbs, with Leaf#Arrangement on the stem, alternate leaves. These leaves are Leaf#Divisions of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
