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Ash Meadows Gum-Plant
(Grindelia fraxino-pratensis )

Ash Meadows gumweed; Photo Copyright 2002 Gary A. Monroe Ash Meadows National Wildlife Refuge
Photo Copyright 2002 Gary A. Monroe Ash Meadows National Wildlife Refuge

Description: Erect perennial, 5-12dm tall, branching above with tan to reddish, resinous stems arising from a woody root-stock.  Leaves are 1-5cm in length, oblanceolate to oblong in shape with some serration towards the tips on the leaf margins.  Leaves are also, dark green, leathery, and densely dotted with resinous glands.  Plant is somewhat sticky to the touch.  Inflorescence is openly branched with several heads on terminal branchlets.  Flower heads are 8-10 mm wide, with around 13 lemon to gold colored ray flowers (7-9mm long).  Phyllaries of the flower heads are resin dotted.  In bud form the flowers are covered with a white gum-like substance. 

Distribution: An endemic species of Ash Meadows, Nye County, NV.  It has also been observed in the lower Carson Slough Area of the Amargosa River, which is directly across the California-Nevada stateline from Ash Meadows National Wildlife Refuge.  Its total population is restricted to a 50 square miles area.

Habitat: Prefers saltgrass meadows near water or in areas with subsurface water just below the surface.  Has been associated with ash-screwbean mesquite woodlands and desert shadscale scrub vegetation.  Ocassionaly occurs on open alkali clay soils in drier shadscale habitats.  Found generally around 700m in elevation.

Flowering Period: July-Sept.

Similar Plants:

Status: Federal Threatened, California Native Plant Society List 1B

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Field Office: Barstow

Last updated: 08-05-2010