2014 Plants of the Month

Monardella sinuata var. nigrescens (wavy-leaved monardella) Photo by Vernon Smith
Monardella
by Doreen Smith
Navarretia bakeri (Baker’s navarretia) Photo by Vernon Smith
Navarretia
by Doreen Smith
Cerastrium viride (field chickweed) Photo by Doreen Smith
Native Cerastium Species
by Doreen Smith
Trifolium  grayi Photo by Vernon Smith
Two Marin Trifoliums
by Doreen Smith
Trillum chloropetalum at Walker Creek. Photo by Doreen Smith
Trillium chloropetalum, giant trillium
by Doreen Smith

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.

 

Calystegia purpurata ssp. purpurata Photo by Doreen Smith
Marin County's western morning-glories, Calystegia purpurata and Calystegia occidentalis
by Doreen Smith

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 "fruit" Photo by Vernon Smith
"Rosa californica"
by Doreen Smith

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.