. Bursa bursa-pastoris and Bursa heegeri biotypes and hybrids. Bursa bursa-pastoris; Bursa heegeri; Plant hybridization. Shull Plate I. Fig. I. — Bursa bursa-pastoris heteris. Dominant form from the F2 of an artificial cross of B. bp. heteris X tenuis. The grandparents were sibs of the plants shown in text-figures 4 and 9. Fig. 2. — Bursa bursa-pastoris tenuis. Recessive form from the same family as the plant shown in figure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustr
. Bursa bursa-pastoris and Bursa heegeri biotypes and hybrids. Bursa bursa-pastoris; Bursa heegeri; Plant hybridization. Shull Plate I. Fig. I. — Bursa bursa-pastoris heteris. Dominant form from the F2 of an artificial cross of B. bp. heteris X tenuis. The grandparents were sibs of the plants shown in text-figures 4 and 9. Fig. 2. — Bursa bursa-pastoris tenuis. Recessive form from the same family as the plant shown in figure 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 Shull, George Harrison, 1874-1954. Washington, D. C. , Carnegie Institution of Washington
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