Tradescantia ohiensis Raf. - Spiderwort

Tradescantia ohiensis plant

Family - Commelinaceae

Stems - To 1.5m tall, herbaceous, erect, glabrous, typically glaucous.

Leaves - Alternate, grasslike, glabrous, glaucous, to 30cm long, clasping stem.

Inflorescence- Terminal, umbellate cymes with +/- 20 flowers, one or two flowers opening at a time, subtended by foliaceous bracts.

Flowers - Corolla blue-purple, to 4cm broad. Petals 3. Stamens 6, filaments pilose with purple pubescence. The hairs of the stamens multicellular. Calyx glabrous or with some hairs at tip of sepals. Pedicels to +2.5cm long.

Tradescantia ohiensis calyxCalyx.

Tradescantia ohiensis flowerFlower.

Tradescantia ohiensis stamensStamen close-up.

Flowering - May - July.

Habitat - Prairies, disturbed sites, waste ground, open woods, roadsides, railroads.

Origin - Native to U.S.

Other info. - This species is commonly mistaken for a grassy weed by beginners who are delighted to see it bloom. It is the most common species of the genus in Missouri.
The stems are moderately succulent.

Photographs taken in Gainesville, FL. 7-23-02, and at Busiek State Forest, MO., 6-16-05.


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