It doesn’t have the longest plant name in UBC Botanical Garden, but it comes close. As you can guess from its cultivar name, ‘Merrist Wood Cream’ rockrose is the yellowish flower with red markings. The purple flowers are a type of Spanish lavender, Lavandula stoechas subsp. pedunculata, I think.
Why the × in front of Halimiocistus? It’s there to denote that this is a hybrid between two genera (an intergeneric hybrid), Halimium and Cistus. Typically, hybrids are between two species of the same genus (an interspecific hybrid), and in those cases, the × symbol to denote a hybrid is placed between the generic name and the epithet, like so: Rosa × odorata.
In Botany Photo of the Day news, I was kindly emailed by Sharyl to inform me that Botany Photo of the Day was the Yahoo! Pick of the Day for June 10, 2005 (page since removed from the web), solving the mystery about all the web site traffic from Yahoo!.
I know this is getting long, but I do want to reiterate for new readers that Botany Photo of the Day owes much credit to two people: Tim Bray, who seeded the idea in a technology lunch we had at the garden; and Dr. Quentin Cronk, the garden’s director (in 2005), who has fostered a garden that allows seeds of ideas to grow.