10-Hydroxypaspalic acid amide [1] and 10-hydroxy-cis-paspalic acid amide [2] were found as metabolites of the postproduction phase of submerged fermentation of Claviceps paspali. Structure revision is based on comparison with ¹H- and ¹³C-nmr data of cis-paspalic acid and agroclavine I. Two of our latest papers (1,2) are concerned with the submerged fermentation of Claviceps paspali Stevens et Hall (Clavicipitaceae) strain MG-6. The main products of this fungus are lysergic acid-α-hydroxyethylamide and ergine, the starting compounds for preparation of free lysergic acid and other derivatives. It was found that these alkaloids are formed mainly in the production and degradation phases of submerged fermentation. In the postproduction phase they undergo two biooxidative reactions that yield mostly 8-hydroxyderivatives of ergine and erginine. 10-Hydroxypaspalic acid amide [1] was found to be another product of this phase, and some data characterizing its structure were published earlier (1). Furthermore, the isolation of compound 1 made it possible to complete the current biosynthetic scheme for the production of simple lysergic acid derivatives. It is assumed that the 10-hydroxyderivative 1 arose in a similar sequence of reactions as 8-hydroxyergine (1). This assumption is supported by the fact that 10-hydroxyagroclavine and 10-hydroxyelymoclavine were identified as unstable intermediates of agroclavine and elymoclavine oxidation to their 8-hydroxyderivatives (3,4). Nevertheless, there are still about five alkaloids or their degradation products in the fermentation broth which remain unknown. The aim of this work was to determine the structure of the last of the four main alkaloids of the postproduction phase. Isolation of an isomer of 1 was the reason for the stereochemical reinvestigation.