Scheuchzers Cottongrass Eriophorum Scheuchzeri Sour Grass Greenhouse Cyperaceae Alpine Cottongrass

green white soft fruits grass fluffy hairy cottongrass woolly eriophorum cyperaceae scheuchzers cottongrass eriophorum scheuchzeri sour grass greenhouse alpine cottongrass moorstandort flower sleeve threads wool schopf cotton balls fruchtender state