In snake cactus flower
4 white(/yellow/purple) petals with darker pinnate veins, yellow stamen
sparsely hairy stem, sepals, and leaves, stem green to red
Herb, 1 large extending stem with offshoot, leaves: ovate, abaxial pubescence, basal, flower: 5 dark purple petals fused into tube, salveform, modified white corolla nubs rimming the tube opening, 5 stamen adnate to petals, 1 style, 5 black purple pubescent sepals