America, South America, widely established in Old World. Some authors have contended that Xanthium spinosum originated in South America and is introduced
3 KB (253 words) - 21:11, 5 November 2020
Florida and common in some locations, and has been grown for its jutelike fiber in some regions. The similar Urena sinuata Linnaeus [U. lobata var. sinuata
4 KB (448 words) - 23:23, 5 November 2020
characters in distinguishing the two families. Combining the two was promoted by Thorne (1983), who now suggests (1992, 1992b), as have many Old World workers
19 KB (2,758 words) - 01:13, 14 February 2019
very rich in species, especially in the Appalachian Mountain system. Some of these species, or at least closely related sister species, are found in Japan
69 KB (10,503 words) - 23:43, 13 February 2019
proteinaceous inclusions occur in some other dicotyledons (notably some members of the Magnoliidae and Fabaceae), but in those groups the inclusions do
63 KB (9,890 words) - 23:57, 13 February 2019
barrier in the Paleocene and middle Eocene, and the bridge was available for migration in the early and the late Eocene. Some filtering of Old World tropical
49 KB (7,227 words) - 17:53, 13 February 2019
Rubus chamaemorus,Vaccinium uliginosum, and V. vitis-idaea, in varying combinations. In some locations Carex spp. and a diverse array of lichens and mosses
133 KB (20,036 words) - 18:33, 13 February 2019
sterility in at least one sex, that in which the sex-determining mechanism is heterochromosomal (X--Y in males, or W--Z in females). Another difference in higher
60 KB (8,674 words) - 23:32, 13 February 2019
woodland was established by 9000 yr B.P. in the far northwest of Canada (J.C. Ritchie 1984). Populations of trees established in the Yukon in the early Holocene
69 KB (11,092 words) - 18:00, 13 February 2019