diff --git a/src/libecoPCR/ecotax.c b/src/libecoPCR/ecotax.c
index 813c490..d585d42 100644
--- a/src/libecoPCR/ecotax.c
+++ b/src/libecoPCR/ecotax.c
@@ -175,6 +175,13 @@ ecotx_t *eco_findtaxonatrank(ecotx_t *taxon,
 		return NULL;
 }
 
+/**
+ * Get back information concerning a taxon from a taxonomic id
+ * @param 	*taxonomy 	the taxonomy database
+ * @param	taxid		the taxonomic id 
+ * 
+ * @result	a ecotx_t structure containing the taxonimic information  
+ **/
 ecotx_t *eco_findtaxonbytaxid(ecotaxonomy_t *taxonomy, 
 							  int32_t taxid)
 {
@@ -196,7 +203,7 @@ ecotx_t *eco_findtaxonbytaxid(ecotaxonomy_t *taxonomy,
 }
 
 /**
- * Find out if taxon is son of other taxon's taxid
+ * Find out if taxon is son of other taxon (identified by its taxid)
  * @param	*taxon son 		taxon
  * @param	parent_taxid 	taxonomic id of the other taxon
  *