In 2021, CPC contracted the Arboretum at Flagstaff to recollect seed from a population currently held in long term orthodox seed storage as part of an IMLS-funded seed longevity experiment. The National Laboratory for Genetic Resources Preservation will evaluate how germination tested viability and RNA Integrity of seed lots decline over time in storage.
CPC Funded the Arboretum at Flagstaff to complete a seed collection on USFS land in 2020 and they have a seed collection in their seed bank
CPC Funded the Arboretum at Flagstaff to complete a seed collection on USFS land in 2020 - the back up seed lot resides at NLGRP
CPC Funded the Arboretum at Flagstaff to complete a seed collection on USFS land in 2020
Known only from the Kaibab Plateau in northern Arizona. Occurs in an area of only about a dozen square miles (Reichenbacher 1986 cited by AGFD 1992). It was apparently fairly abundant within this area (AGFD 1992). Populations have decreased, and plants are now only known from three general areas (AGFD 2012). Herbarium specimens should be reviewed to assess trends in populations since new specimens have been collected since 2012.
Grazing poses the most significant threat to this species.
This species is considered to have a stable population, with many hundreds of thousands of plants occurring in a 5 to 6 mile stretch. However, it is possible that these trends are not accurate, as another more common species, Castilleja integra, occurs in the same area and has a similar appearance. (Arizona Fish and Game Department 1999)
The species is still considered before any potential adverse activities can take place on USFS lands.
As more surveys were done for the species, more populations were found. It is still classified as a Forest Service Sensitive species, State rank S2 with very low risk.
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