Global Range: Southern Edwards Plateau ; disjunct on the Llano Uplift of central Texas (Lemke, 1994). Mexico.
Comments: Correll and Johnston (1970) data for Quercus glaucoides notes limestone escarpment and canyons of the Edwards Plateau.
Life History and Behavior
National NatureServe Conservation Status
Rounded National Status Rank: N4 - Apparently Secure
NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: Per Bill Carr, Texas Conservation Data Center: "Quercus laceyi occurs in 10-15 counties on the Edwards Plateau of south-central Texas. In some of those counties, most notably those along the Southern Balcones Escarpment (the dissected southern edge of the Edwards Plateau), Quercus laceyi is not only present but a dominant species. It is the defining species-- not just the defining oak-- of woodlands on steep rocky upper slopes of most or all of the canyons systems in Bandera, Kerr and Real counties. It becomes a bit scarce in the western part of its Texas range (e.g., Val Verde Co.) presumably due to increasing aridity. It's also scarce in the eastern part of its range, e.g., Hays and Llano counties. Note that Quercus laceyi also occurs in Coahuila, Nuevo León and Tamaulipas, but in that part of the world it is largely confined to isolated mountain ranges. Stein, Binion & Acciavatti (2003) provide a map that demonstrates the discontinuous distribution of Lacey oak in Mexico."
Quercus laceyi seldom grows more than 35 feet (11 meters) tall, and has a stocky trunk. Its blue-green leaves are oblong and shallowly lobed to unlobed, but shade leaves can be deeply lobed; they most often turn yellow or brown in autumn.
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On the Edwards Plateau of Texas, Quercus laceyi occurs mostly at 350-600 m elevation; in Coahuila and Nuevo León, it occurs at 1500-2200 m. This species is sometimes associated with remnant mesic forests, which include Acer grandidentatum Nuttall, Tilia species, Quercus muhlenbergii Engelmann, and various pine and other oak species. The leaves are shallowly lobed or entire, although occasional specimens on moist sites are deeply lobed and resemble the leaves of Q . alba in outline.
Names and Taxonomy
Comments: Flora North America indicates that material from Texas and northeastern Mexico was incorrectly attributed to Quercus glaucoides M. Martens & Galeotti by some authors. Further, Johnston (1988) mentions Quercus laceyi is the correct name for plants listed as Quercus glaucoides in Correll and Johnston (1970). True Quercus glaucoides does not occur in Texas, or anywhere in the United States.
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