Tradescantia cerinthoides Kunth. A rupicolous subpopulation in the municipality of Vacaria, state of Rio Grande do Sul, Brazil B–C habit B habit, showing the spirally-alternate leaves C habit, showing the distichously-alternate leaves D–F stems and leaf-sheaths D detail of a glabrous stem, vinaceous with green striations and sparsely hispid leaf-sheath, light green with vinaceous striations E detail of a hispid stem, vinaceous with green striations and hispid leaf-sheath, vinaceous with darker striations F detail of a velutine stem, medium green and velutine, pinkish leaf-sheath with vinaceous striations G–J pubescence of the leaf-blades G abaxial side, showing the dark vinaceous colouration and lack of pubescence H abaxial side, showing the vinaceous colouration and sparsely hispid indumentum I adaxial side, showing the medium green colouration and the hispid indumentum J abaxial side, showing the medium green colouration and velutine indumentum K inflorescence, showing the non-saccate cincinni bracts and velutine indumentum L–M floral buds L green floral bud, showing the velutine indumentum M vinaceous floral bud, showing the hispid indumentum N front view of flowers from the same subpopulation (Vacaria, Rio Grande do Sul, Brazil), showing the variation of sepal colour (green to dark vinaceous), sepal pubescence (velutine to sparsely hispid to hispid to densely hispid) and petal colour (white to shades of pink to lilac) O dorsal and ventral views of the seed, showing the costate testa cleft towards the embryotega and the hilum longer than ½ the length of the seed. Photos by M.O.O. Pellegrini.