Name and distribution
Pelecyphora zilziana is an accepted species native to Durango, Coahuila and Nuevo León. The current combination was published in 2022 (formerly Escobaria zilziana). [2-WWW]
Chemia badanych nasion
In the NMR spectrum of the walls of the Pelecyphora zilziana seeds examined (Escobaria zilziana in the article), the proportions of lignin units were estimated at about 63% 5H and 37% S, with a trace of G. About 84% of the linkages analysed corresponded to benzodioxane structures. The data specify the proportions of polymer components in the sample, rather than the mass fraction of lignin in the seed. [Chen et al. 2013, p. 206–208, ryc. 4E]
The predominance of 5H and presence of S distinguished this material from the almost homogeneous 5H lignin in the P. dasyacantha seeds examined. The authors left open whether 5H and S units form a single mixed polymer or occur as different polymers in the walls. Resolving this would require further study of linkages and component distribution. [Chen et al. 2013, p. 207–209]
Related articles
Synonyms and names in the literature
Escobaria zilziana [2-WWW]