Full Record Details

Catalog #: OBI154400

Occurrence ID: ad2ac32d-664a-4e35-9c7a-b10c44e932c3

Family: Asteraceae

Collector: Tom Schweich

Number: 1034

Date: 2013-03-13

Verbatim Date: 2013-3-13

Locality: United States, California, Alameda, Jean Sweeney Open Space Preserve, Alameda County, California. Just inside the preserve, just east of the north end of Nason Street.

Latitude/Longitude: 37.779  -122.2714  WGS 1984

Elevation: 4 meters (13ft)

Habitat: Jean Sweeney Open Space Preserve. Growing in the gravel of a former railroad roadbed.

Substrate: Gravel

Description: Herbaceous annual or biennial to 35 cm, rigid hairs with hooked branches at tip; sap slightly milky (seen mostly at base of phyllaries); Leaves basal and cauline, alternate, 11 cm x 18 mm wide, oblanceolate, slightly glandular, margins entire, not spine-tipped; Involucre 14 mm; Phyllaries in 4-5 series, the outer series are wide and stand away from the rest, the inner series are narrow, appendages at tip; Receptacle epaulette; Flowers all rays; Pappus of well developed bristles, equal, broader at base, plumose; Corolla yellow, readily withering; Fruit 3 mm x 0.5 mm wide, brown, annular ridges or decoration giving the appearance of a small insect pupa.