Participant Info

Species

Boechera grahamii [Arabis divaricarpa] [Boechera divaricarpa] [Arabis holboellii] [Boechera pinetorum] [etc.]

Family

Brassicaceae

CommonName

Graham’srockcress

Presence

Yes

Status

native

EarliestDate

2013

LatestDate

2021

Ecosystem

foothill, montane, ruderal, urban

Geobotanical

Garitas, SSanjuans

Counties

Conejos, Rio Grande, Saguache

Passes

WildlifePreserves

Other Localities

Del Norte

PhotoRecords

YES Rich Haswell: Rio Grande Co, river walk by Del Norte, floodplain of the Rio Grande 20 May 2019 (flowering); 11 July 2021 (fruiting)

Comments

Of Graham's rockcress, there is only one herbarium voucher, from 7 miles S of Platoro in the floodplain of the South Fork of the Conejos River, dated 2013. But the species was not named until 2007 and earlier records of B. divaricarpa may be B. grahamii (see FNA). The 2019 photo voucher was found in the Rio Grande floodplain by Del Norte, a patch that persists (summer 2021) despite weed-whacking by the town when the area was turned into a “park” in fall of 2019. There is also a photorecord from Moon pass, Saguache Co, 14 July 2021. This range in elevation is supported by that given in Ackerfield (5,000'-10,500'). BONAP shows the USA distribution, which follows the Rocky Mountains from the Canadian border to the Colorado border with New Mexico. BONAP also shows presence in all Watershed counties except for Mineral and Alamosa.

Annotation