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| A. grayanum | Artificial Hybrid | W. hobdyi |
Meiosis in this hybrid indicated that a minimum of 2-3 reciprocal chromosome translocations distinguish the parental genomes. Pollen stainability averaged 20% in two individuals. Note the very conspicuous glandular hairs with droplets of "tar," a condition similar to many of the "tarweeds" of North America.