Twig ID Flashcards
Spur shoot
Stacked terminal bud scars, no nodes
Leaf scar
scar on twig where fallen leaf was attached
bundle scar
Smaller scars on a leaf scar
bud
small structure on stem, consisting of rudimentary foliage or floral leaves
terminal bud
bud at the tip of a branch
lateral bud
bud borne on the side of a twig or in the leaf scar
bud scales
modified leaves that protect bud
imbricate buds
scales overlap like shingles
valvate buds
scales meet along their margins but do not overlap
naked bud
scales are absent
capped bud
no seam, beanie like
spines
modified leaf tissue - cacti
thorns
modified twig tissue, woody
prickle
modified bark tissue; epidermis
recurved prickle
prickle moves backward
pith
center or core of a twig, branch, or stem
spongy pith
soft and porous, large in crosssection
chambered pith
resembles slend hollow pipe with disks at regualr intervals
hollow pith
pipelike, with an open center
stellate pith
shaped like a star
triangular pith
triangle shaped
exfoliating bark
peels off in strips(ninebark, madrone)
furrowed bark
deep ridges in bark(bigleaf maple)
scaly bark
looks like puzzle pieces
resin-pitch-sap
semisolid secretion, amber color
resin pockets or blisters
bubbles in bark, no differentiation in color, filled with resin
monoecious
both male and female in SAME plant
dioucious
male OR female
xylem
moves nutrients up
phloem
moves sugar down
Lenticel
Corky growths on twig
