Media type: E-Article Title: Further Observations on the Survival and Flowering of Some Perennial Herbs, I Contributor: Tamm, Carl Olof imprint: JSTOR, 1956 Published in: Oikos Language: Not determined DOI: 10.2307/3564927 ISSN: 0030-1299 Keywords: Ecology, Evolution, Behavior and Systematics Origination: Footnote: