perennial flowers: the friar`s cowl or larus arisarum vulgare

arisaema arisarum beautiful beauty black bloom blooming blossom botanic botanical botany cobra cowl flora floral flower flowers forest fresh friars garden gardening green growth hood horticulture larus leaf lilies lily looks nature nun outdoor perennial petal plant purple rare season seed small snake spring strange stripes unique vulgare wild wildflowers