Natural history and parasitism of Geocaulon lividum (santalaceae) ...

• Main Author: Warrington, Patrick Douglas
• Format: Text
• Language: English
• Published: University of British Columbia 2011
• Subjects: Arctic; Tundra
• Online Access: https://dx.doi.org/10.14288/1.0104020; https://doi.library.ubc.ca/10.14288/1.0104020

The natural history, structure and parasitism of Geocaulon lividum (Richardson) Fernald of the Santalaceae are described. Both the present study and that of Piehl (1963) maintain the generic segregation of Geocaulon and Comandra. All available data on the distribution of Geocaulon are presented in a series of Maps, in the accompanying text and in an Appendix. The data are drawn from the literature, from herbarium material and from field work. The only vegetation zones of Canada in which Geocaulon is not commonly found are the prairie grasslands, the arctic and alpine tundra and the west coast Douglas Fir and Hemlock forests. The ecological conditions under which Geocaulon is usually found are noted. A list of known hosts is given; many of them represented by voucher specimens in the herbarium of the University of Lethbridge (LEA). Anatomical and morphological data on the various portions of the Geocaulon plant are presented under a series of topics: rhizome, short-shoot, aerial shoot, leaf, inflorescence, ...