Eriogonum parvifolium
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Eriogonum parvifolium is a species of the genus Eriogonum within the family of Knöterichgewächsen (Polygonaceae) formed on dune formations in the coastal area of central and southern California occurs. This evergreen shrub grows to a height of 30 to 100 cm and about the same width. It is a major host to a number of herbivorous insects , including twospecies of butterflies listedas critically endangeredby the United States Fish and Wildlife Service . This shrub is also known by the common names of dune buckwheat ( Dune buckwheat ), coastal buckwheat ( Coast buckwheat ), cliff buckwheat ( Cliff buckwheat ) or sea cliff buckwheat ( Seacliff buckwheat ).
Species description
The thick-stemmed leaves are five to thirty millimeters in size and can be lanceolate to rounded. The leaves can be folded, making them appear more or less triangular. The upper surfaces are smooth, those below are woolly. The foliage is green with a reddish tint, the flowers white to pink or yellowish-green. The perianth (the flower envelope ) measures 2.5 to 3 mm. The smooth fruits of the plant reach the same size.
ecology
Eriogonum parvifolium grows in sandy soils with a pH value of five to eight, which corresponds to slightly acidic to slightly alkaline soils. In cultivated cultivation, this type tolerates clay soils. While this shrub grows partially in full sun, it can tolerate shade in cultivated areas. It is not a forage crop of game , although much of the smaller fauna consume its flowers, fruits, and leaves. This species thrives in areas with annual rainfall of 39 to 78 mm.
'Dune buckwheat' is the host plant of many insects and so there is intense competition among the insects. Specifically, it is a host of ten different species of butterflies , including the 'Smith's blue ' ( Euphilotes enoptes smithi ) and the 'El Segundo' ( Euphilotes battoides allyni ), the only host of which is this species at all stages of life.
Occurrence
Eriogonum parvifolium occurs both on cliffs along the Pacific coast and in the coastal plant community on the dune formations up to heights of 700 meters, as well as at a point in the catchment area of Carbonera Creek . Further inland it comes within a yellow pine forest near the sea.
Nature reserves
Because of its host relationship with these endangered insect species, Eriogonum parvifolium has been the subject of several conservation programs , including a significant and well-researched one at Los Angeles International Airport , which is one of only three surviving colonies of the endangered El Segundo bluer.
Individual evidence
- ↑ Eriogonum parvifolium (photos).
- ↑ Eriogonum parvifolium. In: Willis Linn Jepson, James C Hickman: The Jepson manual. Higher plants of California. University of California Press, Berkeley 1993, ISBN 0-520-08255-9 .
- ↑ Eriogonum parvifolium on laspilitas.com.
- ^ Environmental Impact Report for the Scotts Valley Redevelopment Area. Earth Metrics Incorporated, State of California Clearinghouse Report 7888 (1990)
- ↑ Travis Long Core include: On the perils of ecological restoration and the El Segundo blue butterfly.
