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You are here >1Up Info > Wildlife, Animals, and Plants > Plant Species > Shrub > Species: Fraxinus anomala | Singleleaf Ash
 

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BOTANICAL AND ECOLOGICAL CHARACTERISTICS

SPECIES: Fraxinus anomala | Singleleaf Ash
GENERAL BOTANICAL CHARACTERISTICS : Singleleaf ash is a native, deciduous, shrub or small tree ranging from 6.5 to 16.5 feet (2-5 m) tall with a maximum d.b.h of 5 to 7 inches (12.5-17.8 cm) at maturity [10,14,25]. Leaves are simple to compound, and are 1.5 to 2 inches (4-5 cm) long and 1 to 2 inches (3-4 cm) wide. The fruit is an indehiscent samara 0.6 to 1.0 inch (1.5 to 2.5 cm) long and 0.24 to 0.32 inch (6-8 mm) wide. The bark is thin, and divided by shallow fissures into narrow, scaly ridges [10,14,19,25]. In tree form, singleleaf ash typically has a crooked trunk and rounded crown [25]. RAUNKIAER LIFE FORM : Phanerophyte REGENERATION PROCESSES : Sexual: Singleleaf ash samaras are mature by late summer or fall and are dispersed by wind shortly thereafter. Samaras are dormant, requiring warm, then cold stratification. Germination is epigeal and may occur the spring following dispersal. Samaras, however, can remain viable in leaf litter or humus for several years [3]. Vegetative: Most ash species sprout from the root crown after logging or fire has removed aboveground portions of the plant [1,9,17,21]. It is probable that singleleaf ash responds in such a manner. SITE CHARACTERISTICS : Singleleaf ash grows well on a variety of soil types, ranging from gravel to clay loams. It occurs more often on poorly-developed soils with 0.5 to 2.0 percent organic matter content [18]. Sites are typically dry canyons or gulches with full exposure to sunlight and range from 3,000 to 11,000 feet (910-3,300 m) elevation [14]. Singleleaf ash also colonizes talus slopes, dry hillsides, and alluvial deposits [12,16,25]. Common plant associates of singleleaf ash include skunkbush sumac (Rhus trilobata), desert ceanothus (Ceanothus greggii), Arizona rosewood (Vequelinia californica), desert barberry (Mahonia fremontii), chokecherry (Prunus virginianus), and mountain-mahogany (Cercocarpus spp.) [7,18]. SUCCESSIONAL STATUS : Obligate Initial Community Singleleaf ash is shade intolerant [19]. SEASONAL DEVELOPMENT : Singleleaf ash flowers from April to May [14]. Flowers usually appear either before or with leaves [12].

Related categories for Species: Fraxinus anomala | Singleleaf Ash

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Information Courtesy: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Fire Effects Information System

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