[Pennycresses: The Genera Noccaea and Thlaspi West of the Cascade Mountains of Oregon and Washington]

Siskiyou Pennycress

Noccaea fendleri ssp. siskiyouensis

Synonym: Thlaspi montanum var. siskiyouense

Inflorescence of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

A close-up of the inflorescence of Siskiyou pennycress as seen at Star Flat near Eight Dollar Mt. in southwestern Oregon.........April 5, 2009. Note that there are 6 or fewer stem leaves, a characteristic of this

Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Siskiyou pennycress as seen at a serpentine talus slope along the TJ Howell Botanical Drive (FS Rd 4201) several miles uphill to the west of the Days Gulch Botanica Area, Josephine County, OR.........April 21, 2021 (left) and April 6, 2022 (right).

Inflorescence of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Inflorescence of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Fruits of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Stem leaf of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Fruit of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Inflorescence of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Basal leaves of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Flower of Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Siskiyou pennycress as seen at the Rough and Ready Botanical Wayside along US Highway 99 to the southwest of Cave Junction, Oregon..........April 29, 2012.

Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense) - Siskiyou Pennycress: Noccaea fendleri ssp. siskiyouensis (Synonym: Thlaspi montanum var. siskiyouense)

Siskiyou pennycress observed along the service road down to Star Flat from the Illinois River Road, Josephine County, OR......April 22, 2021.

Paul Slichter