©
ophis: winter twigs, boxelder
©
ophis: 1st year twigs, boxelder
©
ophis: junctions of 1st and 2nd year twigs, boxelder
©
ophis: terminal and lateral buds, boxelder
©
ophis: 1st year twig, boxelder
©
ophis: sectioned 1st year twig, boxelder
©
ophis: sectioned lateral bud, boxelder
©
ophis: spur twigs on 2nd year twig, boxelder
©
ophis: expanded lenticels and leaf scar on 3rd year twig
©
ophis: cut 4th and 1st year twigs, boxelder