Clara Harris's Bloody Dress

[L Verge]

Your description of the fabric seems to match my previous posting about something called Ikat fabric: Ikat fabrics are traditionally woven from warp yarns that are pre-dyed with intricate patterns. Ikat designs were popular during the Civil War following the refinement of commercial warp printing techniques in the 1820s. Ikat patterns characteristically have "bleeding" edges, as the warps are never perfectly aligned. The "blood" stain on the alleged Keene fragment is difficult to distinguish from the ikat pattern.