Malacothamnus Davidsonii Status: (B.L

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Malacothamnus davidsonii Status: (B.L. Rob.) Greene CNPS Rare Plant Rank 1 B.2 DAVIDSON'S BUSH-MALLOW Federal: unlisted Malvaceae State: unlisted State Rank: S2 Habitat: Slopes and washes. Chaparral, cismontane woodland, coastal scrub, riparian woodland. 1 85-855 meters (607-2,805 feet) Counties: Los Angeles, Monterey, Santa Clara, San Luis Obispo, San Mateo Life Form: Dicot perennial deciduous shrub Chris Winchell Bloom period: May-July Chris Winchell Chris Winchell Chris Winchell CNPS Rare and Endangered Plant Inventory Listing Calflora Taxon Report Jepson eFlora Taxon page CalPhotos Database Results Jepson eFlora key Consortium of California Herbaria Records CNPS Santa Clara Valley Chapter • www.cnps-scv.org • Last revised 09/22/2014 Key to our local (San Mateo and Santa Clara County) Malacothamnus species *indicates Rare and/or Endangered species 1 . Inflorescence spike- or panicle-like; flowers generally ± 1 0 per node; leaf-like bracts many 2. Hairs ± yellow; branches spreading or ± erect....M. aboriginum* (INDIAN VALLEY BUSH-MALLOW) 2’ Hairs white; branches ± erect....M. fremontii (FREMONT'S BUSH-MALLOW) 1 ' Inflorescence panicle-like; flowers 3-7 per node; leaf-like bracts few 3. Hairs ± yellow; stellate hairs with < 1 0 rays..............M. davidsonii* (DAVIDSON'S BUSH-MALLOW) 3’ Hairs white; stellate hairs with > 25 rays 4. Stellate hairs adaxially (upper surface) < abaxially (lower surface); veins ± prominent abaxially (lower surface); flowering stalks < 0.5 cm; flower buds rounded; fruit segments shallowly notched.....M. hallii* (HALL'S BUSH-MALLOW) 4’ Stellate hairs ± equally dense abaxially (lower surface), adaxially (upper surface); flowering stalks < 1 .5 cm; flower buds acuminate; fruit: segments deeply notched...............M. fasciculatus (M. arcuatus*) (CHAPARRAL MALLOW) CNPS Santa Clara Valley Chapter • www.cnps-scv.org • Last revised 09/22/2014.

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