| ID | Symbol | Scientific | Common | Family |
| 12717 | CALLI6 | Callitriche L. | water-starwort | Callitrichaceae |
| 12718 | CAFA3 | Callitriche fassettii Schotsman | Fassett's water-starwort | Callitrichaceae |
| 12719 | CAHE2 | Callitriche hermaphroditica L. | northern water-starwort | Callitrichaceae |
| 12720 | CAAU15 | Callitriche autumnalis L. | Callitriche hermaphroditica | Callitrichaceae |
| 12721 | CAHE3 | Callitriche heterophylla Pursh | twoheaded water-starwort | Callitrichaceae |
| 12722 | CAHEH5 | Callitriche heterophylla Pursh var. heterophylla Pursh [superfluous autonym] | Callitriche heterophylla | Callitrichaceae |
| 12723 | CAHEB3 | Callitriche heterophylla Pursh ssp. bolanderi (Hegelm.) Calder & Taylor | Bolander's water-starwort | Callitrichaceae |
| 12724 | CABO10 | Callitriche bolanderi Hegelm. | Callitriche heterophylla ssp. bolanderi | Callitrichaceae |
| 12725 | CAHEB2 | Callitriche heterophylla Pursh var. bolanderi (Hegelm.) Fassett | Callitriche heterophylla ssp. bolanderi | Callitrichaceae |
| 12726 | CAHEH | Callitriche heterophylla Pursh ssp. heterophylla | twoheaded water-starwort | Callitrichaceae |
| 12727 | CAAN | Callitriche anceps Fern. | Callitriche heterophylla ssp. heterophylla | Callitrichaceae |
| 12728 | CAIN52 | Callitriche intermedia Hoffmann [excluded] | | Callitrichaceae |
| 12729 | CAINI6 | Callitriche intermedia Hoffmann ssp. intermedia Hoffmann [excluded] | | Callitrichaceae |
| 12730 | CALO2 | Callitriche longipedunculata Morong | longstock water-starwort | Callitrichaceae |
| 12731 | CAMA3 | Callitriche marginata Torr. | winged water-starwort | Callitrichaceae |
| 12732 | CASE21 | Callitriche sepulta S. Wats. | Callitriche marginata | Callitrichaceae |
| 12733 | CAPA52 | Callitriche palustris L. | vernal water-starwort | Callitrichaceae |
| 12734 | CAPAV2 | Callitriche palustris L. var. verna (L.) Fenley ex Jepson | Callitriche palustris | Callitrichaceae |
| 12735 | CAVE2 | Callitriche verna L. | Callitriche palustris | Callitrichaceae |
| 12736 | CAPE44 | Callitriche pedunculosa Nutt. | Nuttall's water-starwort | Callitrichaceae |
| 12737 | CANU10 | Callitriche nuttallii Torr. | Callitriche pedunculosa | Callitrichaceae |
| 12738 | CAPE16 | Callitriche peploides Nutt. | matted water-starwort | Callitrichaceae |
| 12739 | CAPES | Callitriche peploides Nutt. var. semialata Fassett | Callitriche peploides | Callitrichaceae |
| 12740 | CAST | Callitriche stagnalis Scop. | pond water-starwort | Callitrichaceae |
| 12741 | CATE19 | Callitriche terrestris Raf. | terrestrial water-starwort | Callitrichaceae |
| 12742 | CAAU16 | Callitriche austinii Engelm. | Callitriche terrestris | Callitrichaceae |
| 12743 | CADE4 | Callitriche deflexa A. Braun | Callitriche terrestris | Callitrichaceae |
| 12744 | CADEA | Callitriche deflexa A. Braun var. austinii (Engelm.) Hegelm. | Callitriche terrestris | Callitrichaceae |
| 12745 | CADES2 | Callitriche deflexa A. Braun var. subsessilis Fassett | Callitriche terrestris | Callitrichaceae |
| 12746 | CATR2 | Callitriche trochlearis Fassett | effluent water-starwort | Callitrichaceae |
