Ostrya


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Related to Ostrya: Eastern Hophornbeam

Ostrya

 

(hop-hornbeam), a genus of deciduous monoecious trees of the family Betulaceae. The trees are 10–25 m tall and have longitudinally fissured bark. The leaves are alternate and irregularly double-toothed. The staminate flowers have no perianth and are arranged in a single cylindrical catkin along the longitudinal axis. The pistillate flowers have a plain perianth and are arranged in two’s in reduced dichasia, which are gathered, in turn, into short, thick catkins. Each pistillate flower is surrounded by a pitcher-shaped membranous involucre formed of concresced bracts, giving the cone-shaped female catkin a resemblance to the female inflorescences of hop plants. The involucre is closed when fruits are present; the fruits are nuts.

There are five species (according to other sources, ten) of hophornbeam, distributed in the northern hemisphere. The species O. carpinifolia occurs in the USSR; it grows wild in the mixed forests of the Caucasus. A tree reaching 15 m in height (sometimes to 22 m), it has double-toothed, short-petioled leaves and rough, scaly bark. The bark is a source of dyes and is used for tanning leather. The wood is valuable, but the reserves of this relict species are not great. The American hop-hornbeam (O. virginiana) is cultivated in the European USSR and in the Caucasus.

REFERENCE

Derev’ia i kustarniki SSSR, vol. 1. Moscow-Leningrad, 1951.

V. N. GLADKOVA

References in periodicals archive ?
However, in Ostryopsis, Carpinus, and Ostrya both secondary and tertiary bracts are absent (Fig.
De las especies que fueron encontradas por Castillo (1991), estan Carpinus caroliniana, Clethra mexicana, Liquidambar macrophylla, Meliosba alba, Ostrya virginiana, Styrax glabrescens, Ulmus mexicana, Rapanea myticoides, Rhamnus capreafolia y Turpinia insignis.
Se recomienda establecer acciones de conservacion en este bosque de niebla relicto, ya que en el se encuentran especies senaladas en la NOM-059-SEMARNAT-2010 (Anonimo, 2010b) en alguna de las categorias de riesgo, tales como Ostrya virginiana, Alsophila firma, Marattia weinmanniifolia, Magnolia schiedeana, Ceratozamia mexicana var.
Algunas angiospermas de estas zonas como Alnus, Betula, Carpinus, Carya, Castanea, Fagus, Ostrya, Populus, Quercus, Tylia y Salix tambien establecen ECM (Harley y Smith, 1983; Smith y Read, 1997).
This interpretive trail highlights the ironwood tree (Ostrya virginiana), which occurs naturally in this area, at the most northerly limit of its distribution.
Crabapple,apple Morus alba White mulberry Nyssa sylvatica Black gum Ostrya virginiana Ironwood Picea glauca densata Black hills spruce P.
Ostrya virginiana--American Hophornbeam, Eastern Hophornbeam
Hop-hornbeam (Ostrya virginiana) occured with high frequency in the subcanopy.
0 Cornus florida 0 Fraxinus pennsylvanica 0 Liriodendron tulipifera 0 Nyssa sylvatica 0 Ostrya virginiana 0 Quercus coccinea 0 Quercus prinus 0 Quercus rubra 0 Quercus velutina 0 Sassafras albidum 0 Ulmus americana 0 Quercus alba 4.0 Oxydendrum arboreum 7.5 Predicted changes in potential species boundaries and optima
The effect of plant leaf age on hopper acceptance was assessed using 5 plant species for which young and old leaves commonly occur simultaneously and are easily distinguished: laurel cherry, Prunus carolina Alton (Rosales: Rosaceae); hophornbeam, Ostrya virginiana (Mill.) K.Koch (Fagales: Betulaceae); peregrina, Jatropha integerrima Jacq.
guatemalensis, Arbutus xalapensis, Cleyera thaeoides, Cupressus lusitanica, Juglans mollis, Ostrya virginiana, Pinus greggii, Quercus affinis, Taxus globosa y Tilia mexicana.
Hornbeam woods can be found near to Ostrya carpinifolia woods but at lower altitudes.