New article for Trees and Shrubs Online.
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'Cistus calycinus' from the website Trees and Shrubs Online (treesandshrubsonline.
Bean treats this species under Halimium commutatum, giving the synonyms: Halimium libanotis Lange, in part; Helianthemum libanotis Willd., in part.
A low-growing shrub usually under 2 ft high. Leaves linear, with revolute margins, 1⁄2 to 11⁄2 in. long, 1⁄16 to 3⁄16 in. wide, glabrous above, white-hairy beneath. Flowers solitary or in few-flowered cymes, yellow, about 1 in. wide; sepals three, glabrous. Native of Portugal, W. Morocco, and S. Spain. It is a pretty, free-flowering shrub, but not reliably hardy.