Log in

Editor's Picks

stelianradu.jpg
Stelian Radu, a founding member of the IOS, accomplished an...
Website Editor | Jun 16, 2019
klonowanie_w_kulturach_in_vitro.jpeg
Scientists in Poland have successfully micropropagated 500...
Website Editor | May 30, 2019
ios_logo_square_for_website_small.jpg
Five-minute, fifteen-slide Lighting Talks were included for...
Website Editor | May 01, 2019

Plant Focus

quercus_look.jpg
Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon...

A Gallery of Diverse Young Quercus chrysolepis Seedlings

It is written in the entry for Quercus chrysolepis at www.efloras.org that “Quercus chrysolepis is one of the most variable North American oaks.” If this comment relates primarily to the mature plant and its characters, it’s also true of the youngest leaves in development. While the new, emergent leaves of the average young plant show primarily green, the outliers show a stunning variability in color and other features. The photos in this suite were taken in May 2018 of the first leaves in the second year of these plants’ lives. The acorns were collected in 2016 from seven seed sources at Palomar Mountain State Park in California that exhibit typical Q. chrysolepis characteristics, in the same general area where a population of Q. wislizeni with golden abaxial trichomes has been observed (California State Parks permits #CDD-2016-008-PMSP and #CDD-2017-018-PMSP).