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Dendrology Exam #2
Myricaceae, Fagaceae, Betulaceae, Casuarinaceae, Cactaceae, Theaceae, Tiliaceae
| Term | Definition |
|---|---|
| Myricaceae | Wax-myrtle family evergreen leaves usually is swamps of sandy soils imperfect anemophilous (wind pollinated) flowers |
| Comptonia peregrina | Sweet Fern easily recognizable due to leaves that look like mmm on both sides woody twigs and branches watkins with imperfect flowers |
| Myrica conifera | Wax myrtle Produces a lot of wax evergreen leaves imperfect flowers |
| Fagaceae | Beech Family Leaves are deciduous or evergreen depending on location, alternate, simple, stipulate, usually pinnate venation Flowers are monoecious with axillary stiminate catkins or heads and pistillate spikes Fruits are nuts w/ basal involucre (cup) |
| Fagus grandifolia | American Beech Smooth blue/grey bark leaves with acuminate apex, cuneate base, elliptical to oblong-ovate shape, dentate with >10 pairs of lateral veins long spindle shaped bud on slender zigzag twig wood is red/brown, medium density, uneven figure |
| Castanea dentata | American Chestnut leaves are oblong-lanceolate, coarsely + sharply dentate-serrate, apex acuminate, glabrous, nut nearly flat nearly wiped out due to blight |
| Castanea mollisima | Chinese chestnut leaf margins are similar to american chestnut but the leaf is broader and somewhat scabrous on the surface |
| Castanea pumila | Chinkapin smaller leaves than the american chestnut with tomentose under surface, generally white on the underside single seed burs Tomentose twigs |
| Quarcus (white oaks) | no bristle tips on leaf lobes inner surface of acorn shell is glabrous, seed sweet, acorns mature in one season whiteish-brown wood, tyloses found in xylem vessels |
| Lobatae (Red and Black Oaks) | Bristle tips on leaf lobes, teeth, or apex inner surface of acorn shell tomentose, seed bitter, acorns usually mature in two seasons NO tyloses extremely bitter fruit that is very difficult to get out |
| Quercus lyrata | Overcup Oak cup covering more than 75% of acorn leaves with deep lobes toward apex pubescent underneath bark is shaggy straight |
| Quercus alba | White Oak usually more than 7 lobes generally evenly distributed, glabrous underneath lots of variation in leaf morphology - not the best to use to differentiate between species cup covers less than 75% of acorn |
| Quercus stellata | Post Oak trunk is very straigh middle lobes are wider to give the appearance of a cross -top of leaf is glossy, dark green and underside has a hairy feel to it |
| Quercus pridoides | Dwarf Chestnut Oak rounded to almost pointed teeth that go all the way around it looks very shrubby rather than tree like |
| Quercus muehlenbergii | Chinkapin Oak it has more points than roundness |
Created by:
phebe
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