Marin has Trillum chloropetalum plants with the petal-color being either green, brown, pink or red-purple.
On the immediate coast of Point Reyes, for example on Tomales Point and on the Marin Headlands at Wolfback Ridge, petals can be shorter than those of inland populations.
Plants of the month include Calystegia purpurata and Calystegia occidentalis, two western morning-glory species. Already I have seen Calystegia purpurata flowering on a chain-link fence by the northbound San Rafael Highway 101 exit. Mostly the flowers of this species are white with purple lines, fading to pink, but some plants have pink flowers from the begining and fade almost red-purple. This gives the reason for the Latin specific epithet.
Rosa californica is the most common wild rose in Marin and probably in California, but many old so-called occurrences
have been found by recent taxonomic experts to be other species or hybrids.
The shrubs have pink flowers and, when fruiting, red “hips,” which are commonly thought of as the fruits. Botanically speaking, however, the real fruits are hairy and seed-like, and they are contained in the urn-like fleshy red structures.