Seed viability of alpine species: variability within and among years.
Keywords
Polemonium;Potentilla;Rosaceae;calamagrostis purpurascens;artemisia scopulorum;geum rosii;polemonium viscosum;sibbaldia procumbens;potentilla diversifolia;alpine grasslands;Festuca idahoensis;Deschampsia cespitosa;seed set;seed longevity;viability;temporal variation;plant communities;Montana