Spider Plant blossom 7/11/12 - SPECIES ID (see description)

Spider Plant blossom 7/11/12 - SPECIES ID (see description) Los Angeles County Arboretum in California
http://www.calflora.net/losangelesarboretum/whatsbloomingjun07.html
shows a Spider Plant: "Chlorophytum comosum 'Vittatum' Spider Plant Liliaceae (Lily family) South Africa" with blossoms apparently identical to mine.

Other research on the net tells me that
Chlorophytom comosum = solid green
Chlorophytom comosum 'Vittatum' = white strip in the middle
Chlorophytum comosum 'Variegatum' = green outlined with white