Hypericum perforatum

Taxonomy

Family

Asteraceae

Genus

Helichrysum

Species

italicum

Distribution

Europe, Africa, Asia Minor, New Zealand and America

Utility

Alternative medicine and phytotherapy. Used in cosmetic industries. Food spices. In Versilia - Tuscany (Italy) typical honey production called: miele di spiaggia. Ornamental plant and biodiversity

Flowering time

V - IX

PollenPollenDefinition: The pollen grain is the Gymnosperms and Angiosperms male germ element. Its function relates to the sexual fertilization....
characteristics

Group

MonadMonadDefinition: solitary pollen grain derived from a tetrad or polyad, which normally break down into individual pollen grains....

Simmetry

Radial

PolarityPolarityDefinition: pollen characteristics to possess two endowed poles of equal or different features....

IsopolarIsopolarDefinition: pollen grain with the proximal pole like the distal one....

ExineExineDefinition: external layer of the sporoderm consisting of ectexine plus endexine....
sculpturing

EchinateEchinateDefinition: ref. sculture. Sporoderm with spina-shaped elements....

ApertureApertureDefinition: opening to allow pollen tube germination. Zone of pollen grain surface in which the exine thins or completely lacks....

TricolporateTricolporateDefinition: ref. aperture. Pollen grain with three apertures formed by colpi and pori....

Polar viewPolar viewDefinition: view from which it is possible to observe the shape, sculpture, cytoplasm and apertures of a pollen grain in polar position....

SubcircularSubcircularDefinition: kind of pollen shape in polar view....

Equatorial view

OblateOblateDefinition: ref. pollen. When the P/E ratio is of 0.50 to 0.75....
- OvalOvalDefinition: distinctive shape of a (depressed or compressed) pollen in equatorial view....

Hypericum perforatum

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