Name and distribution
Pelecyphora sneedii is an accepted species in POWO, ranging from Arizona to Texas and northeastern Mexico. It includes subsp. sneedii and subsp. orcuttii. The current combination dates from 2022 (formerly Escobaria sneedii). [2-WWW]
Chemia badanych nasion
The material named Escobaria albicolumnaria in the publication corresponds to present-day Pelecyphora sneedii subsp. sneedii. POWO lists E. albicolumnaria as a synonym of this particular subspecies. Linking the name preserves the scope of the sample in the chemical study. [2-WWW]
Chen and colleagues reported a high content of typical G/S lignin in seeds identified as Escobaria albicolumnaria. The result therefore belongs to historically distinguished material of the nominate subspecies of P. sneedii. It provides no basis for assigning the same chemical characterisation to the other currently accepted subspecies, subsp. orcuttii. [Chen et al. 2013, pp. 206–208]
Related articles
Materials from the author's archive
The species also appears in Konrad Szychowski's private material archive. [Kaktologia 2009b, file p. 9] [Neciu b.d., file p. 1]
Synonyms and names in the literature
Escobaria sneedii · Escobaria albicolumnaria [2-WWW]