. The Canadian field-naturalist. Natural history. 144 The Canadian Field-Naturalist Vol. 109. Figure L A portion of the alvar at Odessa on the Napanee Limestone Plain near Kingston, Ontario. Limestone pavement with gravel and moss cushions {Tortella tortuosa, Tortula ruralis) is evident in the lower portion of the photo. The grassland is composed of Panicum flexile, Panicum philadelphicum, Poa compressa, and Sporobolus vaginiflorus. Surrounding trees are Eastern White Cedar. Photo by P. M. Catling, September Please note that these images are extracted from scanned page images that may h

---

. The Canadian field-naturalist. Natural history. 144 The Canadian Field-Naturalist Vol. 109. Figure L A portion of the alvar at Odessa on the Napanee Limestone Plain near Kingston, Ontario. Limestone pavement with gravel and moss cushions {Tortella tortuosa, Tortula ruralis) is evident in the lower portion of the photo. The grassland is composed of Panicum flexile, Panicum philadelphicum, Poa compressa, and Sporobolus vaginiflorus. Surrounding trees are Eastern White Cedar. Photo by P. M. Catling, September Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

---

Size: 1352px × 1848px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky