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S.M. Bukasov. Potatoes of South America and their breeding use, Leningrad, 1933, p. 72. Diagnosis: Differences from f. bifidum, to which it is closer: leaflets are more basiscopic, leafletts and primary leaflets on young leaves are blunter, calyx is small with short mucronules, corolla is more light- blue with smaller lobes, anthers are smaller, stigma is round, of the type S. ajanhuiri, forms numerous berries (underdeveloped?), globular, colored. |
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