Shared Flashcard Set

Details

Lab 6 Type B
give common name from characteristics
15
Biology
Undergraduate 1
10/16/2010

Additional Biology Flashcards

 


 

Cards

Term

Habit: small spreading shrub

Leaves: awl-shaped, evergreen

Bark: scaly

Reproductive Structure: cone that becomes fleshy and berry-like when fertilized

Habitat: open disturbed areas, found in western and eastern U.S.

 

Definition
common juniper
Term

Leaves: alternate, simple, ovate to elliptical, margin doubly serrate to dentate and slightly revolute, rusty pubescence on the midrib and principal veins below, petiole grooved

Buds: pseudoterminal bud stalked and covered by 2-3 red, pubescent scales

Fruit: small semi-woody cone-like catkin

Twigs: young twigs distinctly triangular in cross-section, reddish-brown, prominent lenticels

Habitat: coastal forests

Definition
red alder
Term

Leaves: opposite, simple, very large and palmately lobed

Buds: opposite, terminal bud large and stout with 3-4  greenish red scales

Fruit: double samaras with large wings, seed head hairy

Habitat: coastal forests

Definition
bigleaf maple
Term

Habit: very large tree

Leaves: evergreen, 4-sided, sessile on a peg, spirally arranged

Reproductive structure: pendant seed cone, oblong, 1.5-3.5 inches long, thin and woody spirally arranged scales that have very thin notched edges

Habitat: coastal forests

Definition
Sitka spruce
Term

Habit: very large tree

Leaves: evergreen, scale-like, in decussate pairs, yellow-green on top with a distinctive butterfly-shaped bloom pattern underneath

Reproductive structure: small woody cones, with valvate scales arranged in 5-6 decussate pairs, typically turned on the branches

Habitat: coastal forests

Definition
western redcedar
Term

Habit: large tree with lacy foliage that drops at terminal ends

Leaves: evergreen, flattened, single needles, petolate, 2 distinct leaf sizes that alternate on the twig

Reproductive structure: small woody egg-shaped cones, pendant and sessile

Twig: roughened by diagonally-raised and rounded leaf scars

Habitat: coastal forests

Definition
western hemlock
Term

Habit: medium tree

Leaves: persistent, scale like, in decussate pairs, yellow to blue-green with no green blooms, arranged in flat, drooping sprays

Reproductive structure: small and round seed cone, smooth peltate scales with a point on each

Habitat: coastal forests

Definition
Alaska yellow-cedar
Term

Habit: small understory tree

Leaves: evergreen needles, single and spirally arranged (but appear 2-ranked), petiolate

Fruit: round, fleshy, orange-red aril

Habitat: coastal forests

Definition
Pacific yew
Term

Habit: medium to large tree

Leaves: flattened needles, dark green above and silvery white below with 2 stomatal bands, apex usually notched, spirally arranged but clustered on upper side of twig, topmost needles point upward and outward

Buds: large, rounded, covered in purple pitch, terminal buds usually in clusters of 3 or more

Reproductive strucure: erect seed cone, barrel-shaped, 3-6 inches long, scales deciduous, purple-purplish brown when mature

Habitat: coastal forests

Definition
Pacific silver fir
Term

Habit: small tree that grows at high elevations
Leaves: evergreen needles, short and spirally arranged, petiolate

Reproductive structure: small woody cyllindrical seed cone, pendant and sessile

Twigs: roughened by diagonally raised and rounded leaf scars

Habitat: coastal forests

Definition
mountain hemlock
Term

Habit: large tree

Leaves: square needles, 3/4-2 inches long alternating in length on the twig, dark yellow-green above with 2 white bands below, apex rounded or notched, spirally arranged but flattened into 2 ranks, grow parallel to one another but perpendicular to the twig

Reproductive structure: erect seed cone 2-4 inches long, green-purplish green when mature, scales deciduous

Buds: terminal buds in clusters of 3 or more

Habitat: coastal forests

Definition
grand fir
Term

Habit: very large tree

Leaves: Evergreen, 1/2 to 1 inch long, linear, two-ranked and flattened, yellow-green to green, upper side of needle has sparse stomatal bloom while underside has two distinct bands. Leaves on cone-bearing branches may be scale-like

Reproductive structure: seed cone, scale and bract fused, reddish-brown, basically egg-shaped

 

Habitat: coastal forests

Twigs:  Slender, often drooping, initially green and later turning brown

 

Definition
redwood
Term

Habit: medium tree

Leaves: simple, alternate, oblong, stiff and leathery, margins may be coarsely toothed and are often revolute

Fruit: single or paired acorns, shallow caps covered in dense bristles, nut pubescent

Twig: reddish brown with stellate pith, young twigs pubescent

Habitat: coastal forests

Definition
tanoak
Term

Habit: multiple-stemmed decurrent evergeen tree

Leaves: simple, alternate, presistent, oblong to oval, leathery, margins entire or finely serrate

Bark: breaks into short strips when young, multicolored and exfoliates into patches and strips when mature

Fruit: small, round, orange-red drupes with pebbly skins

Flower: white, urn-shaped, borne in large clusters

Habitat: coastal forests

Definition
Pacific madrone
Term

Habit: very tall tree

Leaves: alternate, simple, ovate-lanceolate to deltoid, dark green above and silvery white below with rusty smears of resin, margins wavy to crenate, petioles long and usually round

Fruit: rounded, 3-valved capsules, seeds tiny, black, and cottony-tufted

Buds: long, sharp-pointed, resinous and aromatic

Habitat: coastal forests

Definition
black cottonwood
Supporting users have an ad free experience!