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45 Cards in this Set
- Front
- Back
Four Phyla with Gymnosperms
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Gingkophyta, Coniferophyta, Cycadophyta, Gnetophyta
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Ginkgoaceae
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-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 |
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Araucariaceae
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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 |
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Cupressaceae
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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) |
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Sciadopitaceae
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in Coniferophyta
-long grooved needles in fascicles of two -fascicles arranged in whorls |
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Taxaceae
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in Coniferophyta
-the yews (Taxus) are characterized by seeds born solitarily with a red, fleshy seed coat (aril) and by flattened needles |
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Pinaceae
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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 |
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Abies
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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 |
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Cedrus
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in Pinaceae
-cedars, the real ones -evergreen with needles arranged on both short and long shoots -barrel shaped upright cones -deciduous cone scales |
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Larix
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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 |
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Picea
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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 |
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Pinus
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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 |
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Psuedotsuga
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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 |
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Tsuga
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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 |
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Gingko biloba L.
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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 |
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Taxus brevifolia Nutt.
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Pacific yew
leaves: revolute with convex lower surface seed-bearing structure: bluish seed set in a bright red cup-like fleshy aril |
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Araucaria araucana (Mol.) K. Koch
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Monkey-puzzle
leaves: triangular, with leaf base clasping the stem seed cones: seeds large and inside the cone scale |
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Sciadopitys verticillata (Thunb.) Siebold & Zucc.
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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 |
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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 |
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Thuja plicata Donn ex D. Don
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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 |
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Calocedrus decurrens (Torr.) Florin
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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. |
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Juniperus scopulorum Sarg.
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Rocky mountain juniper
leaves: both needle and scale-like leaves seed cones: berry-like, fleshy, fragrant, bright to dark blue |
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Juniperus communis L.
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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 |
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Cryptomeria japonica (L.f.) D. Don
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Japanese-cedar or sugi
leaves: awl-shaped, tips curved inward seed cones: globular, 20-30 scales with teeth at tip |
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Cunninghamia lanceolata (Lamb.) Hook.
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Chinese-fir
leaves: lanceolate and sharp pointed, bright green and glossy above seed cones: cones look like wooden roses |
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Metasequoia glyptostroboides Hu & Cheng
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Dawn redwood
-trunk is distinctly buttressed leaves: deciduous, opposite, 2-ranked seed cones: globular, woody scales in opposite pairs |
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Sequoia semprevirens (D. Don) Endl.
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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) |
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Sequoiadendron giganteum (Lindl.) Buchh.
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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 |
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Taxodium distichum (L.) L. Rich.
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Bald-cypress
leaves: needle-like, deciduous, alternate seed cones: globular and somewhat irregular -has knees on wetter sites |
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"soft" pines
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-apophysis: umbo @ tip of scale, with no armour
-flexible scales -fascicle bundles w/ 5 needles -fascicle sheath deciduous |
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"hard" pines
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-apophysis: often armoured, centred, stiff scales
-fascicle bundles w/ 2 or 3 needles -fascicle sheaths are persistent |
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Pinus albicaulis Engelm.
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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. |
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Pinus flexilis James
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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 |
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Pinus lambertiana Dougl.
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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 |
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Pinus monticola Dougl. ex D. Don
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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 |
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Pinus strobus L.
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Eastern white pine
-soft pine leaves: very fine, minutely toothed seed cones: slender, 8-20 cm long, narrower than W. white pine |
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Pinus banksiana Lamb.
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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 |
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Pinus contorta Dougl. ex Loud var. latifolia Engelm.
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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 |
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Pinus coulteri D. Don
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coulter pine
-hard pine leaves: in 3s, 15-30 cm seed cones: very large, 25-35cm long, thick scales terminating in a large claw |
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Pinus ponderosa P. Laws ex C. Laws
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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 |
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Pinus sylvestris L.
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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 |
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Larix laricina (Du Roi) K. Koch
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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 |
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Larix lyallii Parl.
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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 |
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Larix occidentalis Nutt.
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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 |
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Cedrus atlantica (Endl.) G. Manetti
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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 |