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Tamalpais Lessingia
Lessingia micradenia
About Tamalpais Lessingia (Lessingia micradenia) 0 Nurseries Carry This Plant Lessingia micradenia is a rare species of flowering plant in the daisy family known by the common name Mt. Tamalpais lessingia. It is endemic to the San Francisco Bay Area of California, where it occurs in areas with serpentine soils. The species is divided into two rare varieties, each with a limited occurrence on opposite sides of the Bay Area. Lessingia micradenia var. glabrata is found in several locations across Santa Clara County south of San Jose, while var. micradenia is known only from a few spots around Mount Tamalpais in Marin County. This is a slender annual herb growing erect and varying in size from just a few centimeters to over half a meter tall, with spreading branches. It is often hairy or woolly in texture. The upper leaves are small and pointed, no more than 2 centimeters long, and the lower leaves are longer and wither early. The petite flower heads appear singly or in clusters. Each head is lined with purple-tipped, glandular phyllaries. The head is discoid, containing no ray florets but a few funnel-shaped, lobed disc florets in shades of light purple to nearly white. The fruit is an achene with pappus of five distinct whitish points.
Plant Description
Plant Type
Plant Type
Annual herb

1.6 ft tall

Flower Color
Flower Color
White, Lavender, Purple

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL

Landscaping Information
Natural Setting
Annual Precipitation: 20.4" - 63.5", Summer Precipitation: 0.19" - 0.87", Coldest Month: 43.7" - 49.8", Hottest Month: 64.4" - 73.7", Humidity: 1.12" - 21.95", Elevation: 133" - 3749"

Alternative Names
Common Names: Mt. Tamalpais Lessingia

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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