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ESC 221 - Autumn 2001
Dendrology and Autecology
Profs. Linda Brubaker and Tom Hinckley

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.

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.

DENDROLOGY LABS MEET IN THE ARBORETUM ON:

(notice: lab on Oct 15, 16 is on campus)

Tree Species List 1 (October. 1, 2))
(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
TREE FORM: excurrent, deliquescent

Species		Family
Scientific	Common	Scientific	Common
Abies grandis	grand fir	"	"
Abies amabilis	Pacific silver fir	"	"
Abies procera	noble fir	"	"
Abies lasiocarpa	subalpine fir	"	"
Tsuga heterophylla	western hemlock	"	"
Tsuga mertensiana	mountain hemlock	"	"
Pseudotsuga menziesii	Douglas-fir	Pinaceae	pine
Thuja plicata	western redcedar	Cupressaceae	cypress, cedar
Chamaecyparis lawsoniana	Port Orford cedar	"	"
Chamaecyparis nootkatensis	Alaska yellow cedar	"	"
Acer circinatum	vine maple	"	"
Acer macrophyllum	bigleaf maple	"	"

Tree Species List 2 (October 8,9)
(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

Species		Family
Scientific	Common	Scientific	Common
Betula papyrifera	paper birch	Betulaceae	birch
Alnus rubra	red alder	"	"
Alnus sinuata	Sitka alder	"	"
Populus trichocarpa	black cottonwood	Salicaceae	willow
Populus nigra var. italica	Lombardy poplar	"	"
Populus tremuloides	quaking aspen	"	"
Salix scouleriana	scouler willow	"	"
Salix babylonica	weeping willow	"	"
Pinus monticola	western white pine	Pinacea	"
Pinus contorta	lodgepole pine	"	"
Pinus coulteri	Coulter pine	"	"
Pinus ponderosa	ponderosa pine	"	"
Larix occidentalis	western larch	"	"

Tree Species List 3 (October 22, 23)
(summary of characteristics)

LEAVES: palmately compound, arcuate, pinately compound,
INFLORESCENCE: panicle, cyme, head
TWIG: sterigmata
FRUIT: drupe, pome,

Species		Family
Scientific	Common	Scientific	Common
Picea sitchensis	Sitka spruce	Pinaceae	pine
Picea engelmannii	Engelmann spruce	"	"
Cedrus deodara	deodar cedar		"
Cornus florida	flowering dogwood	Cornaceae	dogwood
Cornus nuttallii	Pacific dogwood	"	"
Aesculus hippocastanum	horse chestnut	Hippocastanaceae	horse chesnut
Juglans nigra	black walnut	Juglandaceae	walnut
Carya ovata	shagbark hickory	"	"
Sorbus aucuparia	European mountain ash	Rosaceae	rose
Prunus emarginata	bitter cherry	"	"

Tree Species List 4 (Oct. 29, 30)
(summary of characteristics)

LEAVES: truncate, cordate,
INFLORESCENCE: raceme
TWIG: throne, spine
FRUIT: legume

Species		Family
Scientific	Common	Scientific	Common
Umbellularia californica	California laurel, Oregon myrtle	Lauraceae	laurel
Sassafras albidum	sassafras	"	"
Robinia pseudoacacia	black locust	Fabaceae	pea
Fraxinus latifolia	Oregon ash	Oleaceae	ash, olive
Ulmus americana	American elm	Ulmaceae	elm
Magnolia grandiflora	evergreen magnolia	Magnoliaceae	magnolia
Magnolia acuminata	cucumber tree	"	"
Liriodendron tulipifera	yellow poplar, tulip tree	"	"
Arbutus menziesii	Pacific madrone	Ericaceae	heath
Tilia sp.	basswood, linden, lime	Tiliaceae	linden

Tree Species List Week #5 (November 5, 6)
(summary of characteristics)

LEAVES: pubescent
SEED-BEARING STRUCTURE: aril, involucre

Species		Family
Scientific	Common	Scientific	Common
Sequoia sempervirens	coast redwood	Taxodiaceae	redwood
Sequoiadendron giganteum	giant sequoia	"	"
Taxus brevifolia	Pacific yew	Taxaceae	cedar
Platanus x acerifolia	London planetree	Platanaceae	sycamore, planetree
Platanus orientalis	oriental planetree	"	"
Fagus grandifolia	American beech	Fagaceae	beech
Castanea dentata	American chestnut	"	"
Quercus garryana	Oregon white oak	"	"
Quercus rubra	northern red oak	"	"
Quercus imbricaria	shingle oak	"	"
Quercus chrysolepis	canyon live oak	"	"

AUTECOLOGY LABS: to be announced (Duff and Nolan)

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Last Update:
Autumn 2001

Contact Linda Brubaker at: lbru@u.washington.edu
Contact Tom Hinckley at: hinckley@u.washington.edu

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