Shrubs

Mock Orange bush, (Philadelphus genus). There are several specific varieties and species which are very difficult to distinguish. For my purposes, mock orange is sufficient.

Mohave buckbush, (Ceanothus greggii) aka desert ceanothus.  If you look closely the flowers are actually several smaller flowers bunched together. These smaller flowers are closed rather tightly in this photo which gives it a distinctive look.

Cliffrose (Purshia mexicana). I like how tissue paper thin the flower is on this plant