@)ĘrWHICH MUDES COMPONENT TO USE?› DECIDING WHICH COMPONENT TO USE IN THE MIAMI UNIVERSITY DENDROLOGY EXPERT SYSTEM CREATED BY ROGER D. MEICENHEIMER ˙˙ CXAttdataScalelike Leaves bTypically small greenish or brownish leaves that are more or less closely oppressed to the stem. GTHLP5.jpg€Broad and Flat Leaves ‹Leaf blade is relatively broad and flat. May be evergreen or deciduous. There is wide variation in shape and complexity of leaf blades. ATHELP1.jpg€Needlelike Leaves ŽTypically yellowish or greenish, elongated, cylindrical or slightly flattened leaves that are either born singly or in definitive clusters. GTHLP5.jpg€Fan-shaped Leaves GTHLP5.jpg€Seeds contained in a fruit ”There is a wide variety of fruit morphology. Indehiscent fruits enclose seeds at maturity. Dehiscent fruits split to release seeds at maturity. ATHELP7.jpg€Seeds naked, not in a fruit ĆGymnosperm seeds are born directly from ovules associated with cone scales. A few species have "berry-like" fleshy cones. A few species have single seeds enclosed in fleshy red or orange arils. GTHLP22.jpg€Cones ĹCones produced over a period of up to 3 years at various stages of development may be present on a tree. Some species have bluish fleshy "berry-like" cones. Most cones are greenish or brownish. GTHLP22.jpg€Flowers ’Flowers are typically present for only 1-2 months during the year for any given species. There is wide variation in the appearance of flowers. ATHELP20.jpg€Vessels (Pores) Present ĂVessels with relatively large lumens (pores) are interspersed among other cells with smaller lumens as viewed in transverse section. Vessel pores may or may not be visible to the unaided eye. AWHSECT.jpg€No Vessels (Pores) Present şWood consists of tracheids with more or less uniform diameter lumens as viewed in transverse section. Some variation in tracheid wall thickness may be apparent within a growth ring. GWHSECT.jpg ˙˙ CXMenudata˙˙WHICH MUDES COMPONENT TO USE? € TREE FEATURES{Examine the leaf and/or reproductive features of the unknown tree to determine whether it is a gymnosperm or angiosperm. € WOOD FEATURESSExamine the variation in cell types apparent in a transverse section of the wood. €REPRODUCTIVE FEATURESHAssess morphological features associated with the production of seeds. €LEAF MORPHOLOGY €˙˙ €˙˙ €˙˙ €˙˙˙˙ CXItemname Angiosperm€ Gymnosperm˙˙ CXItemrec˙˙˙˙€˙˙˙˙defaultdefault˙˙ CXDatablock’m