(300)__Salix candida, commonly known as hoary willow;

(301)__Salix herbacea, commonly known as dwarf willow;

(302)__Salix interior, commonly known as sandbar willow;

(303)__Salix myricoides, commonly known as blue-leaf willow;

(304)__Salix planifolia, commonly known as tea-leaved willow;

(305)__Salix uva-ursi, commonly known as bearberry willow;

(306)__Samolus valerandi, commonly known as water pimpernel;

(307)__Sanguisorba canadensis, commonly known as Canada burnet;

(308)__Sassafras albidum, commonly known as sassafras;

(309)__Saxifraga foliolosa, commonly known as star saxifrage;

(310)__Saxifraga paniculata, commonly known as livelong saxifrage;

(311)__Saxifraga pensylvanica, commonly known as swamp saxifrage;

(312)__Schoenoplectus x steinmetzii, commonly known as Steinmetz's bulrush;

(313)__Scirpus longii, commonly known as Long's bulrush;

(314)__Scirpus pendulus, commonly known as pendulous bulrush;

(315)__Scrophularia marilandica, commonly known as carpenter's square;

(316)__Scutellaria parvula, commonly known as Leonard's skullcap;