. The Canadian field-naturalist. Natural history. 2002 Cook and Roland: Notable Vascular Plants from Alaska 199. Xanana (n=22) White (n=31) Copper (n=37) River Basins Chitina (n=37) Gulf (n=24) Figure 3. Ratio of endemic taxa within river basins and Gulf of Alaska, Wrangell-St. Elias National Park and Preserve. However, there are many regions and communities that have yet to be surveyed or need further work. Some of these are: the Gulf of Alaska between Yaku- tat and Icy Bays, the southern St. Elias Mountains and Bagley Icefield, the Tanana lowlands, the White River basin, wetland and aquatic
. The Canadian field-naturalist. Natural history. 2002 Cook and Roland: Notable Vascular Plants from Alaska 199. Xanana (n=22) White (n=31) Copper (n=37) River Basins Chitina (n=37) Gulf (n=24) Figure 3. Ratio of endemic taxa within river basins and Gulf of Alaska, Wrangell-St. Elias National Park and Preserve. However, there are many regions and communities that have yet to be surveyed or need further work. Some of these are: the Gulf of Alaska between Yaku- tat and Icy Bays, the southern St. Elias Mountains and Bagley Icefield, the Tanana lowlands, the White River basin, wetland and aquatic communities throughout the Park, nunataks, areas of high endemisim on the north side of the Park in the Mentasta, Nutzotin and northern Wrangell Mountains, high elevation plateaus in the Jacksina River drainage, and rare plant habitat throughout the Park. Over half of the Park ( million hectares) is designated wilderness, the remaining area ( mil- lion hectares) is theoretically protected. Aircraft, motorboats and cabins are allowed in wilderness in Alaska for subsistence purposes and aircraft conces- sions for climbing, hiking and backpacking are not restricted in the Park. Most of the increase in back- country use is in areas that we have found likely to harbor rare plants. The rate of global changes to ecosystems and plant communities is increasing as are infrastructure development and visitor use in the Park. Therefore, there is a need to survey areas where we anticipate use as well as the unsurveyed regions so that we can begin to assess changes to plant populations and communities. We also need information on the distribution, life history and population ecology of most rare plants so that protection plans may be developed. Notable Collections We documented nine additions to the flora of Alaska, 211 species new to the Park's flora, 145 range extensions greater than 200 km from previous- ly documented localities and 186 range extensions greater than 60 km from previo
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