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Insert as an Additional Taxa For Quercus macrocarpa:

Quercus prinus L. Chestnut () C This species is also known as Basket Oak, Chêne Châtaignier, Rock Chestnut Oak, Rock Oak, Swamp Chestnut Oak or Tanbark Oak; Chestnut Oak derives this common name from the resemblance of the to those of Castanea spp.; the dark glossy green leaves are oblong to obovate and 5O to 8O (10O) long with coarsely serrate, nearly dentate, margins; these 50N to 60N (90N) tall trees are initially upright oval in habit, becoming more spreading with age; the acorns are fairly large, 1O to 1¼O long, and can create a litter problem in manicured lawns; the bark of Q. prinus is a darker nearly black-brown color compared to the lighter gray bark of Q. michauxii. C Quercus prinus is essentially a more northern version of Q. michauxii that is native predominantly to more upland sites or in well drained soils along stream courses than Q. michauxii; this species is not as tolerant of wet soils as Q. michauxii, but Q. prinus tends to be more drought tolerant. C Chestnut Oak deserves wider testing in the cooler portions of our region; it has a good upright form, rapid growth rate for a Quercus spp., and transplants relatively easily; it is probably useful in USDA zones 5 to 8. C The of Q. prinus is somewhat confused with that of Q. michauxii; they are very similar in appearance, but have differing adaptive traits; identification of both species in the trade may be confused, particularly in regions where their native ranges overlap.

Quercus michauxii T. Nuttall Swamp Chestnut Oak (Quercus houstoniana, Quercus prinus auct. p.p. non L.) C This species is also known as Basket Oak, Cow Oak, Michaux Oak, Swamp Oak, or White Oak; in our regional landscapes, Q. michauxii is a medium to large, 60N to 70N (120N) tall, deciduous tree that develops an upright oval to rounded crown; some consider the light gray bark to be an asset; the 4O to 7O (10O) long oblong to obovate leaves tend to be broader than those of Q. prinus; they are also coarsely toothed and pubescent beneath; the ¾O to 1¼O long acorns are eaten by wildlife, but may cause litter problems on lawns, sidewalks and drives. C A native of the Southeastern U.S., including East , Q. michauxii is found on wet bottomland sites along water courses or near swamps, hence the common name of Swamp Chestnut Oak; this species may be suitable for use in seasonally poorly drained or compacted soils; will tolerate full sun to part shade, but tend to develop chlorosis on high pH soils; trees are useful in USDA zones 6 to 9a(9b). C The specific epithet honors the famous 18th century French collector, explorer, and botanist André Michaux.

Copyright 2006 with all rights reserved by Michael A. Arnold; intended for future inclusion in Landscape Plants for Texas and Environs, Third Edition.