Ein Versuch mit Phaseolus vulgaris und Phaseolus nanus L. gab ein ganz übereinstimmendes Resultat.
One experiment with Phaseolus vulgaris and Phaseolus nanus L. gave an entirely concordant result.
Phaseolus vulgaris The French or garden bean. Listed along Ph. nanus and Ph. multiflorus, the other two “species” involved in Mendel’s experiments, in Heinrich Gottlieb Ludwig Reichenbach Flora germanica excursoria ex affinitate regni vegetabilis naturali disposit (Leipzig: Cnobloch, 1830–1833), vol. 2, pp. 538–539.
Phaseolus nanus L. The dwarf bean, German Buschbohne. L. is the conventional abbreviation for Carl Linnaeus the elder (1707–1778), indicating that the “first” description of this species stems from this author (“first” in the sense of the rules of nomenclature, i.e. first described following the conventions Linnaeus himself had laid down). The species was described by Linnaeus in the dissertation Centuria plantarum I (Uppsala: Hoejer, 1755, p. 23), where he stated that it was home to “India”. Heinrich Gottlieb Ludwig Reichenbach (op. cit., p. 538), lists it as a separate species, noting that it comes from “East India” and is “often cultivated” (Aus Ostindien, oft cultiviert). Other nineteenth-century botanists like Alphonse de Candolle regarded it as a mere variety of Phaseolus vulgaris, or even as a mere cultivar; see James MacFadyen, The Flora of Jamaica, Vol. I (London: Longman etc., 1873), p. 284. Botanists today seem to agree that it is just a variety, and that the genus Phaseolus actually orginated in South-America, and had reached Sweden (where Linnaeus worked) indirectly via India (see H. Brücher, “The Wild Ancestor of Phaseolus Vulgaris in South America”, in: Paul Gepts (ed.), Genetic Resources of Phaseolus Beans, Dordrecht: Kluwer, 1988, pp. 185–214). While Phaseolus nanus thus does not count as a species of its own anymore, it is interesting to see that Mendel now turns to varieties that do not only differ by a few, clearly defined traits like flower colour or seed shape but by overall habitus as well. For some reason, Mendel repeated Phaseolus vulgaris after Phaseolus nanus L. in the manuscript, but deleted this again. He may have just been tired.
Phaseolus vulgaris The French or garden bean. Listed along Ph. nanus and Ph. multiflorus, the other two “species” involved in Mendel’s experiments, in Heinrich Gottlieb Ludwig Reichenbach Flora germanica excursoria ex affinitate regni vegetabilis naturali disposit (Leipzig: Cnobloch, 1830–1833), vol. 2, pp. 538–539.
Phaseolus nanus L. The dwarf bean, German Buschbohne. L. is the conventional abbreviation for Carl Linnaeus the elder (1707–1778), indicating that the “first” description of this species stems from this author (“first” in the sense of the rules of nomenclature, i.e. first described following the conventions Linnaeus himself had laid down). The species was described by Linnaeus in the dissertation Centuria plantarum I (Uppsala: Hoejer, 1755, p. 23), where he stated that it was home to “India”. Heinrich Gottlieb Ludwig Reichenbach (op. cit., p. 538), lists it as a separate species, noting that it comes from “East India” and is “often cultivated” (Aus Ostindien, oft cultiviert). Other nineteenth-century botanists like Alphonse de Candolle regarded it as a mere variety of Phaseolus vulgaris, or even as a mere cultivar; see James MacFadyen, The Flora of Jamaica, Vol. I (London: Longman etc., 1873), p. 284. Botanists today seem to agree that it is just a variety, and that the genus Phaseolus actually orginated in South-America, and had reached Sweden (where Linnaeus worked) indirectly via India (see H. Brücher, “The Wild Ancestor of Phaseolus Vulgaris in South America”, in: Paul Gepts (ed.), Genetic Resources of Phaseolus Beans, Dordrecht: Kluwer, 1988, pp. 185–214). While Phaseolus nanus thus does not count as a species of its own anymore, it is interesting to see that Mendel now turns to varieties that do not only differ by a few, clearly defined traits like flower colour or seed shape but by overall habitus as well. For some reason, Mendel repeated Phaseolus vulgaris after Phaseolus nanus L. in the manuscript, but deleted this again. He may have just been tired.