Texas Gardening: Texas Native Plant Pictures by color ( Yellow ), 0 by htop

htop wrote:
Radishroot wood sorrel (woodsorrel), hairy wood sorrel (woodsorrel), wild oxalis and white oxalis (Oxalis albicans), Oxalidaceae Family, native, perennial, blooms March through early summer

Radishroot woodsorrel (Oxalis albicans) is also commonly known as hairy wood sorrel, wild oxalis and white oxalis. It is found growing natively in Arizona, California, New Mexico and Texas as well as northern Mexico. The species name "albicans" refers to the white sheen on the leaflets that occurs due to the presence of fine hairs not due to it having white blooms (has yellow blooms). It grows on brushy and stony slopes, ravines, chaparrals, coastal grasslands, sage scrub areas, canyons and canyon bottoms, mountains, rock faces, cave openings, washes, streambeds, creeks, mesquite bosques and riparian woodlands and in moist soils. It prefers part shade.

It is classified as a small subshrub because its rootstock and taproot are thick and more or less woody unlike many wood sorrels. Its stems are prostrate or trailing and do not root at the nodes. They are hairy or glabrous and up to 40cm long. Each leaflet is up to 1.5 cm. Radishroot woodsorrel flowers from Maerch through early summer. The inflorescence has 1 to 3 flowers with pedicels up to 2 cm long. The lanceolate sepals are up to 6 mm long. The 8 to12 mm petals are yellow. Cylindrically-shaped, the fruit capsules are 6 to18 mm in length. It is sometimes mistaken for creeping wood sorrel (woodsorrel) which is Oxalis corniculata. Creeping wood sorrel's roots at the stem nodes (has aboveground stolons); whereas, radishroot wood sorrel does not. Creeping wood sorrel will have hairs along its leaf margins, as do most wood sorrels, but not on the leaf surfaces (may have a few); whereas, radishroot wood sorrel leaf margins and surfaces have numerous small hairs.

Distribution:
http://plants.usda.gov/java/county?state_name=Texas&statefip...

For more information, see its entry in the PlantFiles:
http://davesgarden.com/pf/go/140256/index.html

It is difficult to see that the leaflets are covered in fine hairs in this photo. I went back to take closer photos of the leaflets; however, a big pile of refuse had been thrown on it. It was growing close to the plant that is described above.