Citation: A. Sinclair et Pm. Catling, Ontario Goldenseal, Hydrastis canadensis, populations in relation to habitat size, paths, and woodland edges, CAN FIELD-N, 114(4), 2000, pp. 652-655
Citation: A. Sinclair et al., Notes on the pollination and dispersal of Goldenseal, Hydrastis canadensisL., in southwestern Ontario, CAN FIELD-N, 114(3), 2000, pp. 499-501
Citation: Pm. Catling et Vr. Brownell, Platanthera lacera leucophaea, a new cryptic natural hybrid,and a key to northeastern North American fringed-orchids, CAN J BOTAN, 77(8), 1999, pp. 1144-1149
Citation: Pm. Catling et Vr. Brownell, An objective classification of Ontario plateau alvars in the northern portion of the Mixedwood Plains Ecozone and a consideration of protection frameworks, CAN FIELD-N, 113(4), 1999, pp. 569-575
Citation: Pm. Catling et Vr. Brownell, Additional notes on vegetation of dry openings along the Trent River, Ontario, CAN FIELD-N, 113(3), 1999, pp. 506-509
Citation: Pd. Pratt et Pm. Catling, Distribution of Hetaerina titia (Odonata : Calopterygidae) in the eastern Great Lakes region, GT LAKE ENT, 31(3-4), 1998, pp. 205-208
Citation: Pm. Catling et S. Porebski, Rare wild plants of potential or current economic importance in Canada - alist of priorities, CAN J PLANT, 78(4), 1998, pp. 653-658
Citation: S. Porebski et Pm. Catling, RAPD analysis of the relationship of North and South American subspecies of Fragaria chiloensis, CAN J BOTAN, 76(10), 1998, pp. 1812-1817
Citation: Pm. Catling et Vr. Brownell, Importance of fire in alvar ecosystems - Evidence from the burnt lands, eastern Ontario, CAN FIELD-N, 112(4), 1998, pp. 661-667