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The oak tree in Skjomendalen © Gerhard Sørensen-Fuglem and Cecilia Piccirilli Bjerkeset
An oak grows north of the Arctic Circle in Norway
Website Editor | Aug 14, 2023
Unusual symptoms linked to phytoplasma infection in Quercus humboldtiii, Colombia © Eric Boa
Symptoms linked to phytoplasma infection found in Quercus...
Website Editor | Aug 06, 2023
Different names are being used for one species.
Website Editor | Jun 20, 2023

Plant Focus

A small but mature Alabama sandstone oak producing acorns © Patrick Thompson
A Critically Endangered dwarf oak 

Scouting and Collecting Rare Oaks in the Trans-Pecos for Ex-Situ Conservation, 2016

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Emily Griswold, Shannon Still, and Andrew McNeil-Marshall

Published May 2018 in International Oaks No. 29: 125–142


In 2016, the UC Davis Arboretum and Public Garden partnered with the Lady Bird Johnson Wildflower Center on a conservation project targeting five rare and threatened oak species native to West Texas. We received a tree gene conservation partnership grant from the American Public Gardens Association and US Forest Service that supported three scouting and collecting trips in spring, summer, and fall. The targets of the project were Quercus carmenensis, Q. depressipes, Q. graciliformis, Q. robusta, and Q. tardifolia. The primary goal of the project was to increase the representation of genetic diversity of these rare taxa in living public garden collections by collecting and distributing acorns sampled from multiple individuals across their range. We also aimed to further document the current distribution of these species by identifying the locations of individuals and populations as well as any current conservation threats.




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