Arabis aculeolata

taxobox
name = "Arabis aculeolata"
regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
unranked_ordo = Rosids
ordo = Brassicales
familia = Brassicaceae
genus = "Arabis"
species = "A. aculeolata"
binomial = "Arabis aculeolata"
binomial_authority = Greene|

"Arabis aculeolata" is a species of flowering plant in the mustard family known by the common name Waldo rockcress. It is native to a small range in the mountains of southern Oregon and northern California, where it is an uncommon member of the serpentine soils flora. This is a perennial herb growing from a tough caudex covered in large hairs and the bases of leaves shed in previous seasons. It produces one or more erect stems to heights between 20 and 35 centimeters. The stems are dark in color, often reddish or purplish, and are coated in stiff white hairs. The leaves form a basal rosette about the caudex. They are oval-shaped, green in color and covered in white hairs, up to 4 centimeters long, and with smooth or wavy edges. Leaves located farther up the stem are smaller. The flowers have dark purple sepals and lighter purple petals. The fruit is a long, thin, erect silique up to 6.5 centimeters long.

External links

* [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?2240,2250,2251 Jepson Manual Treatment]
* [http://plants.usda.gov/java/profile?symbol=ARAC4 USDA Plants Profile]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Arabis+aculeolata Photo gallery]