LABORATORY
EXERCISES
Laboratory sessions for
the dendrology and autecology sections of the course will meet at different
locations and have different goals. The first 5 labs will focus on dendrology
and meet in the Arboretum (see below for directions); labs 6-10 will address
autecology and meet on the UW campus.
DENDROLOGY LABS:
Dendrology labs will meet
at the UW Washington
Park Arboretum where the afternoon will be spent carefully observing individual
tree species. The procedure for the Arboretum exercises is as follows: lab groups
meet at the Arboretum building and exercises begin at 1:40 (sharp). Using the
species list designated for that week, we will visit and study each tree on
the list. BRING THE PERTINENT SPECIES LIST TO LAB WITH YOU. Our main emphasis
in studying the trees is on identification, but we will also stress the ecology,
adaptive strategies, and uses of each tree. Although instructors will lead the
discussions, we are firm believers in discovery for oneself. Hence, you should
be prepared to do much of the identification yourselves. Be sure to study from
your textbooks the species on the list before you come to lab. Each week there
will be a 5 point laboratory quiz in which you will be asked to identify
2-3 tree species and their characteristics. Since
we conduct labs regardless of weather and often traverse water-logged sections
of the Arboretum, wear field clothes and bring rain gear. As well as
the species list for the week (see below), you should bring pencil and note
paper (water-proof survey notebooks work well), 3" x 5" cards for quizzes, and
Trees of North America by Preston. Labs
usually last until 4:30-5:00 p.m.
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DIRECTIONS TO THE ARBORETUM
FROM UW
biking 10 min; walking 20
min, driving can be >20 min
The UW campus is at the top of the map. Go
south from campus on Montlake Blvd (green street in middle of the map).
After you cross over 520, turn left on the first street (Washington Blvd).
After the road turns to the right, take the first left turn, pass an entrance
to 520, and take the next left turn. (You are now in the Arboretum.) Follow
the road around a curve and take the next right turn and go up the hill
to the main office. We will meet by the entrance to the office next to
the parking lot. Good luck.
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DENDROLOGY
LABS MEET IN THE ARBORETUM ON:
Tree
Species List 1
(summary of characteristics)
Vocabulary
words:
LEAVES: deciduous, persistent, opposite, decussate, blade, margin, petiole,
palmately lobed, simple leaf, needle, awl-shaped, linear, scale, lobed, serrate,
entire, acuminate, acute, notched, obtuse, palmate, glabrous, glaucous, bract,
node, petiolate, sessile,
SEED-BEARING STRUCTURES:
cone, samara,
TWIGS: bud, bud scale, cruciform buds, lateral bud, leaf scar, shoot, terminal
bud s
TREE FORM: excurrent, deliquescent
TreeSpecies
List 2
(summary of characteristics)
Vocabulary
words:
LEAVES alternate,
clustered, fascicle, stipule, needle, elliptical, lanceolate, oblanceolate,
orbicular, ovate, deltoid, entire, revolute, serrate, acute, acuminate, pinnate,
pubescent FLOWERS dioecious, monoecious; complete, incomplete, imperfect, perfect,
ament or catkin, anther, calyx, corolla, filament, ovary, ovule, perianth, petal,
pistil, sepal, stamen, stigma, style SEED-BEARING STRUCTURES capsule, nut
TWIGS AND BUDS: imbricate bud scales, lenticel
Tree
Species List 3
(summary of characteristics)
LEAVES: palmately
compound, arcuate, pinately compound,
INFLORESCENCE: panicle, cyme, head
TWIG: sterigmata
FRUIT: drupe, pome,
Tree
Species List 4
(summary of characteristics)
LEAVES: truncate,
cordate,
INFLORESCENCE: raceme
TWIG: throne, spine
FRUIT: legume
Tree
Species List Week #5
(summary of characteristics)
LEAVES: pubescent
SEED-BEARING STRUCTURE: aril, involucre
AUTECOLOGY LABS: to be
announced (Duff and Nolan)