psilostrophe cooperi bloom - joshua tree np - 052420 a

angiosperms asteraceae beauty biodiversity biology bloom blossom botany bush california clade colorado conservation cooperi corolla daily desert disc ecology family filaments flora florescence flower genus head hermaphroditic historical indigenous inflorescence joshua national native natural nature paperflower park peaceful perennial plants psilostrophe ray reserve respect sepals serenity sheath species springtime study subshrub tranquility tree tribe vegetation wild wildflower yellow