. Bursa bursa-pastoris and Bursa heegeri biotypes and hybrids. Bursa heegeri; Plant hybridization. BIOTYPES AND HYBRIDS. Fig. 13. 21. Fig. 12. Fig. 12.—Bursa bursa-pastoris rhomboidea. Grown in best pos. sible in sky-lighted room. Characteristic incisions not well developed. Fig. 13.—Bursa Bursa-pastoris rhomboidea modified by growing in dim 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, Geo
. Bursa bursa-pastoris and Bursa heegeri biotypes and hybrids. Bursa heegeri; Plant hybridization. BIOTYPES AND HYBRIDS. Fig. 13. 21. Fig. 12. Fig. 12.—Bursa bursa-pastoris rhomboidea. Grown in best pos. sible in sky-lighted room. Characteristic incisions not well developed. Fig. 13.—Bursa Bursa-pastoris rhomboidea modified by growing in dim 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, Carnegie Institution
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