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Table 4. TRENDS IN MEAN COVER FOR THE PORTION OF THE RECLAIMED AAEA SEEDED IN <br />OCTOBER, 1988. WALDEN COAL PROJECT SITE. BASED ON DATA COLLECTED <br />IN JULY, 1989, 1990, AND 1991. MEAN COVER VALUES ARE IN PERCENT. <br />Speciee <br />1989 1990 1991 <br />Sample Size 14 14 14 <br />COOL SEASON PERENNIAL GRASSES <br />Agropyron daeystachyum 6.57 17.57 9.86 <br />Agrostis ecabra 0.00 <0.01 0.00 <br />Agropyron emithii 2.29 3.57 1.57 <br />Agropyron epicatum 0.00 <0.01 <0.01 <br />Deechampeia caeapitosa 0.00 <0.01 0.00 <br />Hordeum jubatum 0.00 <0.01 <0.01 <br />Oryzopeie hymenoides 0.00 <0.01 <0.01 <br />Stipa viridula 0.43 0.00 0.00 <br />Subtotal 9.29 21.14 11.43 <br />INTRODUCED PERENNIAL GRASSES <br />Agropyron crietatum 0.00 <0.01 0.00 <br />Alopecurue prateneis 0.00 3.00 <0.01 <br />Elymue junceue 0.14 3.43 3.86 <br />Feetuca ovina 0.00 2.14 2.86 <br />Subtotal 0.14 8.57 6.72 <br />ANNUAL GRASSES <br />eromue tectorum 0.00 <0.01 0.00 <br />Subtotal 0.00 <0.01 0.00 <br />PERENNIAL FORBS <br />Achillea lanulosa 0.14 <0.01 <0.01 <br />Aetragalus cicer 0.00 <0.01 0.00 <br />Penstemon etrictue 0.00 <0.01 <0.01 <br />Subtotal 0.14 <0.01 <0.01 <br />ANNUAL AND BIENNIAL FORBS <br />Carduus nutane esp.macrolepis 0.00 0.00 <0.01 <br />Chenopodium atrovirene 1.57 <0.01 <0.01 <br />Chenopodium berlandieri 4.43 2.57 0.00 <br />Deecurainia richardsonii 0.00 <0.01 0.00 <br />Kochia acoparia 0.00 <0.01 0.00 <br />Salsola kali 0.57 0.71 0.43 <br />Sieymbrium altieaimum 0.00 <0.01 0.00 <br />Subtotal 6.57 3.29 0.43 <br />