Crystals formed in a 'down-chain' orientation exhibited well-defined facets with commonly observed facet angles of ~109° (Figure Crystals formed in a 'chains-flat' orientation were prepared via a co-melt templating method to direct the crystallization of the hydrocarbons epitaxially on excess benzoic acid. These crystals appear as thin films with a rectangular or block type shape (Figures ). SAED patterns from these crystals (Figure We have also sought to index SAED patterns to the specific unit cells for C31H64 and C30H61OH. For C31H64, there remains some ambiguity in the preceding literature on whether the alkane chains adopt Pbcm or A21am space group symmetry. If the alkane chain packs with A21am symmetry, the (110) reflections should be symmetry forbidden when viewed along