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45 Cards in this Set

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Four Phyla with Gymnosperms
Gingkophyta, Coniferophyta, Cycadophyta, Gnetophyta
Ginkgoaceae
-in Gingkophyta
-Deciduous
-fan-shaped leaves with parallel venation, borne on both long and short shoots
-large solitary seeds with a fleshy, smelly, outer seed coat
Araucariaceae
in Coniferophyta
-native to the southern hemisphere
-large, scale-like leaves with alternate arrangement
-branches rather than needles abcise (cladaptosis)
-includes Norfolk Pine and Money Puzzle
Cupressaceae
in Coniferophyta
-trees usually have scale-like leaves (Juniperus, Calocedrus, Cupressus, Thuja, Sequoiadendron, Chamaecypris), but sometimes have needles (Seqouia, Taxodium, Metasequoia, Cunninghamia)
-can be monoecious or dioecious
-leaf arrangement can be alternate or opposite
-seed cones often globular or spherical, usually dehiscent but sometimes fleshy (Juniperus)
-bracts and scales fused
-indeterminate growth and laterally winged seeds are typical in this family (although can be wingless)
Sciadopitaceae
in Coniferophyta
-long grooved needles in fascicles of two
-fascicles arranged in whorls
Taxaceae
in Coniferophyta
-the yews (Taxus) are characterized by seeds born solitarily with a red, fleshy seed coat (aril) and by flattened needles
Pinaceae
in Coniferophyta
-in seed cones bract and scale are distinct from one another
-monoecious
-seeds are usually terminally winged but may be wingless
-leaves needle like and alternate
-can be evergreen or deciduous
Abies
in Pinaceae
-true firs
-needles have expanded leaf base (called a pulvinus), that look like a suction cup against the stem
-needle tips may be notched
-seed cones upright at maturity
-cone scales deciduous
-shape of bracts of seed cones useful for species ID
-vegetative buds are round or dome-shaped
-branching is often very irregular
Cedrus
in Pinaceae
-cedars, the real ones
-evergreen with needles arranged on both short and long shoots
-barrel shaped upright cones
-deciduous cone scales
Larix
in Pinaceae
-larches
-deciduous needles born on short shoots
-needles turn yellow prior to abscission in fall
-seed cones are small and upright, bracts sharply pointed and can be longer than scales
-cone scales are thin
Picea
in Pinaceae
-spruces
-needles have a woody peg at the base called a sterigma
-sterigma persist after leaf abscission
-seed cone scales are thin and cones open at maturity
Pinus
in Pinaceae
-pines
-needles born in fascicles (bundles of 2,3,5 depending on the species)
-Juvenile needles are solitary and scale- like
-seed cones take two years to mature, can be pendant or upright
-reproductive and vegetative buds together in compound buds
-cones may open at maturity or may remain closed
-seeds may be winged or wingless
Psuedotsuga
in Pinaceae
-douglas-firs
-seed cones are pendant, trident-shaped bracts longer than cone scales
-needles are grooved on upper surface and have a short petiole
-buds are sharply pointed
Tsuga
in Pinaceae
-hemlocks
-needles are flattened, grooved above, have two rows of stomata on underside, blunt tips
-vegetative buds are very small and ovoid
-seed cones are pendant, and cone scales are thin and much longer than bracts
Gingko biloba L.
Gingko, maidenhair tree
leaves: deciduous, obdeltoid, dichotomous venation
twigs and buds: twigs smooth with thick obvious short shoots, leaves alternate and spirally arranged
seed-bearing structure: mature seed large, plum-like, foul smelling when overripe
Taxus brevifolia Nutt.
Pacific yew
leaves: revolute with convex lower surface
seed-bearing structure: bluish seed set in a bright red cup-like fleshy aril
Araucaria araucana (Mol.) K. Koch
Monkey-puzzle
leaves: triangular, with leaf base clasping the stem
seed cones: seeds large and inside the cone scale
Sciadopitys verticillata (Thunb.) Siebold & Zucc.
umbrella pine
leaves: slightly rubbery feeling needles, deeply grooved on both surfaces, in fascicles of 2, whorled in clusters of 10-15 around twig
seed cones: scales woody, fan-shaped, loosely attached, both surfaces furrowed
Callitropsis nootkatensis (D. Don) Little
a.k.a. Chamaecyparis nootkatensis
Yellow - cedar (yellow cypress)
-crown is droopier than other native cypresses
leaves: scale like, forming 4 rows along twig, leaves in all four rows fairly similar, unpleasant smell when crushed
twigs: tough, flexible, limp
seed cones: globular, 4-6 mushroom-shaped woody scales
bark: light grey to grey-brown, in vertical strips
Thuja plicata Donn ex D. Don
Western red cedar
-flatter than yellow cedar
leaves: in 4 rows along the twig, but upper & lower leaves flattened
twigs: stiffer than yellow cedar
seed cones: ovoid, 8-10 cone scales, woody-leathery
bark: grey to reddish-brown, in long fibrous strips
Calocedrus decurrens (Torr.) Florin
incense-cedar
leaves: scale-like, whorled in 4s, side leaves folded, upper & lower leaves flattened, closely appressed to stem, shiny dark green, aromatic when crushed
seed cones: 6 scales, 2 becoming greatly enlarged and spreading at maturity, similar in profile to a fleur de lise.
Juniperus scopulorum Sarg.
Rocky mountain juniper
leaves: both needle and scale-like leaves
seed cones: berry-like, fleshy, fragrant, bright to dark blue
Juniperus communis L.
common juniper
leaves: NO SCALE LEAVEs, needle leaves only, very sharp pointed
seed cones: berry-like, very fleshy, fragrant, bluish-black, smells stronger than rocky mountain juniper
Cryptomeria japonica (L.f.) D. Don
Japanese-cedar or sugi
leaves: awl-shaped, tips curved inward
seed cones: globular, 20-30 scales with teeth at tip
Cunninghamia lanceolata (Lamb.) Hook.
Chinese-fir
leaves: lanceolate and sharp pointed, bright green and glossy above
seed cones: cones look like wooden roses
Metasequoia glyptostroboides Hu & Cheng
Dawn redwood
-trunk is distinctly buttressed
leaves: deciduous, opposite, 2-ranked
seed cones: globular, woody scales in opposite pairs
Sequoia semprevirens (D. Don) Endl.
Coast redwood
leaves: needle-like, slightly keeled on bottom with 2 lines of stomata
seed cones: globular, 2-3 cm long, scales wrinkled on the outside (like the lips of an old person), spreading when mature (further apart than sierra redwood)
Sequoiadendron giganteum (Lindl.) Buchh.
Sierra redwood
leaves: scale-like, awl-shaped, small, lance shaped leaves diverge from twig and are rigid, sharp-pointed
seed cones: ovoid-oblong, scales peltate, thick, wrinkled and pitted on the outside, spreading (wide) when mature
-fibrous cinnamon red bark
Taxodium distichum (L.) L. Rich.
Bald-cypress
leaves: needle-like, deciduous, alternate
seed cones: globular and somewhat irregular
-has knees on wetter sites
"soft" pines
-apophysis: umbo @ tip of scale, with no armour
-flexible scales
-fascicle bundles w/ 5 needles
-fascicle sheath deciduous
"hard" pines
-apophysis: often armoured, centred, stiff scales
-fascicle bundles w/ 2 or 3 needles
-fascicle sheaths are persistent
Pinus albicaulis Engelm.
Whitebark pine
-soft pine
leaves: stout and stiff, no teeth
twigs: smooth and grey
seed cones: globular to ovoid, stalkless; scales thick, tough, pointed, opens slightly when mature, large wingless seeds, disintegrates on tree or when it falls to ground.
Pinus flexilis James
Limber pine
-soft pine
leaves: stout & stiff, no teeth
seed cones: cylindrically to narrowly ovoid, scales thick at tip, spoon shaped. Cones open on tree, large almost wingless seed
Pinus lambertiana Dougl.
Sugar pine
-soft pine
leaves: fine, minutely toothed
seed cones: large, 25-65 cm long, scales slightly thicker and more rigid than in white pine; seed large and winged
Pinus monticola Dougl. ex D. Don
Western white pine
-soft pine
leaves: fine, minutely toothed, bluish green
seed cones: cylindrical, 10-30 cm long, pendulous, on 2cm stalk, 90-160 thin tipped scales
Pinus strobus L.
Eastern white pine
-soft pine
leaves: very fine, minutely toothed
seed cones: slender, 8-20 cm long, narrower than W. white pine
Pinus banksiana Lamb.
jack pine
-hard pine
leaves: in 2s, stiff, sharp, straight or slightly twisted, spread apart.
seed cones: asymmetrical, straight or curved inwards, usually pointing forward on twig, no (or small) prickle on scales
Pinus contorta Dougl. ex Loud var. latifolia Engelm.
Lodgepole pine
-hard pine
leaves: in 2s, usually strongly twisted, not spread apart
seed cones: sometimes asymmetrical, at right angles to branch or pointing back
Pinus coulteri D. Don
coulter pine
-hard pine
leaves: in 3s, 15-30 cm
seed cones: very large, 25-35cm long, thick scales terminating in a large claw
Pinus ponderosa P. Laws ex C. Laws
Ponderosa pine
-hard pine
leaves: typically in 3s, 12-25 cm long
seed cones: cylindrical to narrowly ovoid, shiny reddish-brown, scales have sharp prickle
Pinus sylvestris L.
Scots pine
-hard pine
leaves: in 2s 4-8 cm long
seed cones: conical to ovoid, often asymmetrical, apophysis raised and 4 sided (often with a cross), usually without a prickle
Larix laricina (Du Roi) K. Koch
Tamarack
leaves: 20-50mm, deciduous
twigs: hairless, terminal bud surrounded by a circle of hairs on sort shoots
seed cones: 10-20mm, scales smooth; much longer than bracts
Larix lyallii Parl.
Subalpine larch
leaves: deciduous
twigs: stout, very pubescent, bud scales have dense fringe of hairs
seed cones: tipped bracts are longer than the scales and fringed with hairs
Larix occidentalis Nutt.
Western larch
leaves: deciduous
twigs: young ones hairy, ones that have overwintered don't have hair
seed cones: tips curved towards base of cone when open. tips of bracts extend beyond the scales
Cedrus atlantica (Endl.) G. Manetti
Atlas cedar
leaves: short shoots, evergreen, single needles
seed cones: egg shaped with flat top, erect, cone scales very wide and deciduous, bracts fused to scales