CALATHEA

Rattlesnake Plant. One of the best indoor ornamental house plants! Has long medium green leaves with dark decorative spots. The underside of the leaf is deep purple. Low shade landscape plant. Indoor house plant.
See Article - How to grow Calathea indoors.

This variety has velvety patterned ovate leaves which are light green in color with darker green stripes, like Zebra stripes. The underside of the leaves are purple and not always visible because leaves grow horizontally (although some will curve or grow more upright).
Learn more about this plant:
Calathea Zebrina: Nature's Zebra Striped Star
How to grow Calathea indoors.

Velvet Furry. A favorite of landscapers, this thin fuzzy rippled leaf Calathea is very attractive as well as durable. A purple leaf back adds to this plants rich color and texture.
The upper foliage of Calathea rufibarba is semi-glossy, and olive green in color. The under side of the foliage, along with the stems are rich burgundy in color. The stems are covered with fine purplish-brown hairs. Place your Calathea rufibarba in bright filtered or indirect light.
See Article - How to grow Calathea indoors.

Calathea Dottie has vivid pink markings with an entire and wavy margin. The leaf surfaces are colored very dark black-green and its midrib beautifully marked with a distinctive bright pink that also encircles the leaf about 0.5-1" from the margin. These beautiful markings remain vivid pink even as the plant matures. Newly emerged leaves are slightly lighter in color. Leaves underside is purple. Dottie has the characteristic feature of folding up their leaves at dusk to dawn by means of the tiny geniculum, an angular knee-like joint connecting it to the petiole, resembling hands put together in prayer, hence the other common name, Prayer Plant. And, in the morning the leaves will return to normal position, that is, almost perpendicular to the petioles. The plant does occasionally produce purple and white flowers. Perfect small accent plant for shade tropical gardens or as a houseplant.