6727 Engelmannia suffruticosa (A. Gray) Rose. var. longipes Roseb. Fls orange, perennial, stem terminated by a sterile fascicle of leaves, several lateral fertile branches present; sand dunes, near to Oso Flaco Lake, extreme southwestern San Luis Obispo County, Calif. March 21, 1967 Oso Flaco n = 18 checked 6728 Rorippa nasturtium-aquaticum (L.) H. Gay Margins of lake in water, rhizomatous, no flowering material seen as 6727 Specimens at Berkeley appear to be good Cardamine 6729 Athyson pusillus (Hook.) Greene Petals white, wet serpentine chip rock, open gentle slope, near summit of road from Muir Woods to Fairfax, about 14 miles south of Fairfax, Mt. Tamalpais, ca. 2000 ft. Marin Co., Calif. March 27, 1967