Western Pearly Everlasting margaritacea (#) ([dagger]) Epilobium brachycarpum (#) Tall Annual Willowherb Eriogonum buckwheat spp.
Main shrub species were Salix flabellaris and Skimmia laureola with grass cover of Saussurea lappa and Anaphalis triplinervis.
It was an open pasture with main grass species of Anaphalis triplinervis, Artemisia vulgaris, Aconitum heterophyllum, Bergenia stracheyi, Dactylis glomerata, Bistorta affinis, Potentilla eriocarpa and Poa bactriana (Table III).
and Epilobium) germinated poorly in fine-textured substrates.
Helens, Morris and Wood (1989) found that Lupinus lepidus, the initial pioneer on the barren pyroclastic flows, reduced the survival of two invading species, Anaphalis
margaritacea and fireweed (Epilobium angustifolium) in the first year.
Genera witho oil-bearing seeds Achillea Anaphalis
Arctium Arnoglossum Artemisia Asterothamnus Iva Calendula Carthamus Centaurea Cirsium Crepis Dimporphotheca Erigeron Eupatorium Guizotia Helianthus Heteropappus Iva Lactuca Madia Matricaria Osteosperrnum Saussurea Sigesbeckia Silybum Stokesia Tanacetum Vernonia Xanthium Youngia Compilado de/Compiled from: Database of Oil Yielding Plants, 2004; IENICA, 2007 Tabla 3.
In field experiments on Mount Saint Helens, Morris and Wood (1989) and Wood and del Moral (1987) found that Lupinus lepidus, the initial pioneer on the barren pyroclastic flows, reduced the survival of two invading species, Anaphalis
margaritacea and fireweed (Epilobium angustifolium), in the first year.
A third site, PE, on moist silt/mud deposits from an intermittent wash, supported a dense, varied herbaceous community, with Epilobium spp, Lupinus lepidus, Anaphalis
margaritacea and Salix spp.
Wood and del Moral (1988) documented the pattern of plant establishment over the Pumice Plains 6 yr after the eruption and found that three species - Anaphalis margaritacea (L.
Anaphalis margaritacea and Epilobium angustifolium (hereafter referred to as Anaphalis and Epilobium, respectively) are both perennial, rhizomatous, herbaceous species common as wind-dispersed ruderals on disturbed sites at low- to mid-elevations in the Cascade Mountains of the Pacific Northwest.
Two previous studies have shown that growth and survivorship were generally higher in Anaphalis than in Epilobium on the Pumice Plains, and higher rates in both species were associated with higher soil moisture (Morris and Wood, 1989; Wood and Morris, 1990).
This study compared physiological and morphological characteristics of Anaphalis and Epilobium to determine what differences might explain their relative colonization success.
Both Anaphalis and Epilobium were major components of the vegetation of this clear cut, which appeared typical of such sites in the area surrounding Mount St.
Diurnal water relations of Epilobium and Anaphalis were compared at the Bean Creek site on 2 dates in August 1986 during a period of dry, warm weather.