''Helianthemum apenninum'', the white rock-rose, is a white-flowering
rock rose
Rock most often refers to:
* Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids
* Rock music, a genre of popular music
Rock or Rocks may also refer to:
Places United Kingdom
* Rock, Caerphilly, a location in Wales ...
of the family
Cistaceae
The Cistaceae are a small family of plants (rock-rose or rock rose family) known for their beautiful shrubs, which are profusely covered by flowers at the time of blossom. This family consists of about 170(-200) species in nine genera that are ...
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 (un-assisted or gravity-assisted dispersion).
It is photoautotroph and an
Evergreen Plant (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
{{Malvales-stub