- any plant of the dwarf evergreen genus Helianthemum, some species of which are grown as rock-garden plants for their numerous papery yellow or orange flowers; related to the rockrose, which they resemble: family CistaceaeAlso called: Cape primrose
New Latin, from Greek hēlios sun + anthemon flower
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for helianthemum
Thus, certain species of Helianthemum are apetalous in Lapland.
The Sunflower (Helianthemum annuus) is an example of one of the plants belonging to this division which has seeds yielding oil.Botany for Ladies
It feeds from August to May on rock rose (Helianthemum), eating the withered and even mouldy leaves.The Moths of the British Isles, Second Series
I have seen a similar instance in a less degree in a species of Helianthemum.
Laid on the petals of the common furze (Ulex europæus), and on leaves of rock-rose (Helianthemum chamæcistus).The Butterflies of the British Isles