Keir Morse

Malacothamnus lucianus is a species of flowering plant in the mallow family known by the common names Santa Lucia bushmallow and Arroyo Seco bushmallow and by the cultivar name Hanging Valley bushmallow. It is endemic to Monterey County, California, United States, where it is known from the Santa Lucia Mountains.

Malacothamnus involucratus is a species of flowering plant in the mallow family known by the common name Carmel Valley bushmallow. It is likely endemic to Monterey County, California, where it is known from Carmel Valley and the Jolon region. A single specimen is attributed to San Luis Obispo County, California but the origin of this specimen is questionable.

Malacothamnus enigmaticus is a species of flowering plant in the mallow family known by the common name enigmatic bush-mallow. It is endemic to the Peninsular Ranges of California and Baja California, Mexico extending from the San Ysidro Mountains in the north to the Sierra de San Pedro Mártir in the south. It was first collected in 1938 and described as a new species to science in 2019. Prior to 2019, it had been mistakenly assigned to Malacothamnus aboriginum and Malacothamnus densiflorus.

Malacothamnus eastwoodiae is a species of flowering plant in the mallow family known by the common name Alice's lovely bushmallow. It is named after the botanist Alice Eastwood. It is endemic to Santa Barbara County, California and currently only known from Vandenberg Space Force Base.

Malacothamnus discombobulatus is a species of flowering plant in the mallow family known by the common name discombobulating bushmallow. It is morphologically similar to Malacothamnus davidsonii and was treated within M. davidsonii in the past. Malacothamnus discombobulatus is named after the confusion sown from its morphological similarity to M. davidsonii. It is endemic to Monterey and San Luis Obispo counties in California.

Malacothamnus astrotentaculatus is a species of flowering plant in the mallow family known by the common name starry-tentacled bushmallow. It is named after the somewhat tentacle-like outgrowths on the calyx that are covered in stellate trichomes. It is endemic to Shasta and Tehama counties in California.

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