Search results
Results From The WOW.Com Content Network
Rosaceae generally have five sepals, five petals, and many spirally arranged stamens. The bases of the sepals, petals, and stamens are fused together to form a characteristic cup-like structure called a hypanthium. They can be arranged in spikes, or heads. Solitary flowers are rare.
The stamens arise between the petals and the disk. Hypanthium in Rosa Narcissus pseudonarcissus, showing from the upper bend to the tip of the flower: spathe, ovary, hypanthium, tepals, corona. In myrtles, the hypanthium can either surround the ovary loosely or tightly; in some cases, it can be fused to the walls of the ovary. It can vary in ...
A pistil may consist of one carpel (with its ovary, style and stigma); or it may comprise several carpels joined together to form a single ovary, the whole unit called a pistil. The gynoecium may present as one or more uni-carpellate pistils or as one multi-carpellate pistil.
Potentilla argyrocoma is a small perennial herb producing a clump of fuzzy reddish naked stems that grow horizontal to the ground and a number of tail-like hairy leaves which grow erect and may curl or droop.
There are 20–25 stamens. The radical leaves have a long petiole, whilst the leaves on the flowering stalks are usually sessile or with short petioles. The glossy leaves are alternate, ternate, consisting of three obovate leaflets with serrated margins. The paired stipules are leaflike and palmately lobed. There are 2–8 dry, inedible fruits.
Rosaceae: Genus: Potentilla: Species: P. lindleyi. ... The center of the flower holds ten stamens and up to 60 small pistils. External links. Jepson Manual Treatment;
The flowers have between 100 and 200 stamens measuring about 3.5 mm (0.14 in) long, and between 400 and 600 carpels. [ 4 ] : 683 [ 5 ] [ 6 ] [ 7 ] The fruit is an ovoid or somewhat cylindrical aggregate fruit measuring about 13 mm (0.51 in) diameter and up to 18 mm (0.71 in) long, and is bright red at maturity.
Each flower has five calyx lobes, five broad, shallowly-notched petals, thirty stamens, many pistils and a separate gynoecium. The fruit is a receptacle containing several glossy, pale brown achenes. The plant may reproduce by seed or vegetatively by sprouting new shoots from its caudex. Sulphur cinquefoil flowers from June to August. [2] [3]