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Posted by: Sandy Steinman | December 23, 2012

Marin County 2012 Rare Plant Report

The Marin Chapter California Native Plant Society published the following rare plant report for 2012 on their website

Marin County 2012 Rare Plant Report  by Doreen L. Smith

Some Marin rare plants have had their Latin names changed in the new Flora, Jepson Manual #2 !

One of the most unexpected changes was that the annual mint found in the sand-dunes of Pt. Reyes, thought for many years to be Monadella undulata, was really the quite different species Monardella sinuata var. nigrescens. The real M. undulata is a perennial, shrubby plant from Southern California. Only one of the images on Calphotos.org is the real M. undulata. It is by Gerald and Buff Corsi of the California Academy of Sciences, and it is from the Nipoma Dunes.
Old Name
Arctostaphylos hookeri ssp. montana
Mt. Tamalpais manzanita
Cordylanthus maritimus ssp. palustris
Pt. Reyes bird’s-beak
Cordylanthus mollis ssp. mollis
soft bird’s-beak
Lotus formosissimus
harlequin lotus
Monardella undulata
curly-leaved monardella
Streptanthus niger
Tiburon black jewelflower
New Name
Arctostaphylos montana ssp. montana
Mt. Tamalpais manzanita
Chloropyron maritimum ssp. palustre
Pt. Reyes bird’s-beak
Chloropyron molle ssp. molle
soft bird’s beak
Hosackia gracilis
coast lotus
Monardella sinuata ssp. nigrescens
wavy-leaved monardella
Streptanthus glandulosus ssp. niger
Tiburon black jewel-flower

There remain several rare plants reported from Marin that still defy our searches. If you happen to discover what you believe to be any of them, please contact Doreen Smith.
These plants are:
Arctostaphylos virgata and A. crustacea ssp. rosei from near Muir woods
Collinsia corymbosa from Pt. Reyes
Cordylanthus mollis from San Pablo Bay shores
Erigeron supplex from Pt. Reyes headlands
Gilia capitata ssp. tomentosa from near Tomales
Helianthella castanea from Mt. Tamalpais
Holocarpha macradenia from Ross Valley
Horkelia cuneata ssp. sericea from Pt. Reyes
Linanthus croceus from R.C.A. beach, Bolinas
Micropus amphibolus from Ignacio
Pentachaeta bellidiflora from southern Marin
Pityopus californicus from Big Carson canyon
Plagiobothrys glaber from Mill Valley
Sidalcea hickmanii ssp. viridis from Carson Ridge
Sidalcea malviflora ssp. purpurea from north of Inverness
Stebbinsoseris decipiens from the south of Stinson Beach cliffs

For more information and photographs of these
California native plants, go to Calflora or CalPhotos.

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