1. Fecundity allocation in herbaceous plants;Aarssen;Oikos,1992
2. Regulation of flower, fruit and seed production by a monocarpic perennial, yucca whipplei;Aker;J. Ecol.,1982
3. Reintroducing pitcher’s thistle;Bell;Endanger. Species Bull.,2002
4. Effects of sand burial depth on seed germination and seedling emergence of Cirsium pitcheri;Chen;Plant Ecol.,1999
5. COSEWIC Assessment and Update Status Report on the Pitcher’s Thistle (Cirsium Pitcheri) in Canada;COSEWIC,2000