''Helianthemum apenninum'', the white rock-rose, is a white-flowering
rock rose of the family
Cistaceae found in the North Atlantic region, mainly in dry grassy and rocky places across large parts of Europe.
''Helianthemum apenninum'', is a self supporting, semi-woody shrub that may grow up to 0.5 meters high and roots unto 0.3 meters deep. It follows a perennial life cycle.
It flowers from March to July and produces pentamerous flowers, white with yellow centers and yellow
stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10
Morphology and terminology
A stamen typically consists of a stalk called the filame ...
s and up to 30 mm across. The three outer sepals are hairy and striped; the 2 inner sepals are very small. The flowers grow in clusters of 3 to 10 on a stem.
The flowers are visited by
Marsh Marygold Moth (''Micropterix calthella'').
It produces
Dry fruits with seeds (average 0.9 mg) that are dispersed through
autochory
In Spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant.
Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, ...
(un-assisted or gravity-assisted dispersion).
It is photoautotroph and an
Evergreen Plant
In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...
(maintains foliage throughout the year). The leaves are small (around 30 mm), linear/lance-shaped, in opposite pairs. They are covered with greyish or whitish hairs, especially on the underside, and the edges are rolled under.
References
External links
Helianthemums.co.uk for further information on Helianthemums* https://www.gbif.org/species/7949730
apenninum
Taxa named by Philip Miller
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