Arabis petiolaris (A. Gray) A. Gray
Brazos rockcress, Rock-cress, Brazos rock-cress
Brassicaceae (Mustard Family)USDA Symbol: ARPE4
USDA Native Status: L48 (N)
Specimen & Label Data
Location: Limestone hill SE of guard gate on S Oakwell Farms Pky--Oakwell Farms, San Antonio.
Habitat: Damp, half-shaded, shallow, alkaline soil. Few & scattered.
Description: Erect, single stalk, taprooted annual, 45 cm tall. Many thin, ascending petioles above (to 35 mm). Leaves alternate, pinnately lobed below (3.5x 10 cm) to simple, linear-lanceolate and reduced above. Infloresences are bractless racemes. Flowers tetradynamous, lavender. Siliques straight or slightly curved (3x50 mm), flattened parallel to septum erect. Seed orbicular/ winged.
Collector: Harry Cliffe
Collection Date: May 8, 1993
Specimen number: 496
Herbarium Owner: NPSOT
Herbarium ID: 0737
Accession Date: Apr 26, 1994
Accession Number: 53 Annotations: (In flower & fruit) SCFRB