| Title | Synopsis of the Flora of Colorado. Washington, DC |
| Abbreviation | Syn. Fl. Colorado |
| Authors | T. C. Porter: J. M. Coulter |
| Publication Dates | 20 Mar 1874 |
| TL2 | 8.180 |
| Remarks | United States Department of the Interior, U.S. Geological and Geographical Survey of the Territories, Miscellaneous Publications |
The Harvard University Herbaria hold 18 type specimens of taxa described in this publication
Astragalus brandegei Porter [Isotype] 1874, 24Machaeranthera canescens var. alpina Porter [Isotype] 1874, 4: 59
Actinella grandiflora var. glabrata Porter [TypeMaterial] 1874, 76
Actinella grandiflora var. glabrata Porter [TypeMaterial] 1874, 76
Senecio renifolius Porter [Isotype] 1874, 83
Leucampyx newberryi A. Gray ex Porter & J. M. Coulter [Type] 1874, 77
Erigeron glandulosus Porter [Syntype] 1874, 60
Erigeron coulteri Porter [Isotype] 1874, 61
Melica bulbosa Geyer ex Porter & Coulter [Lectotype] 1874, 149
Melica bulbosa Geyer ex Porter & Coulter [Syntype] 1874, 149
Melica mutica var. parviflora Porter & Coulter [Type] 1874, 149
Clematis scottii Porter & J. M. Coulter [Type] 1874, 1
Rosa arkansana Porter [Isotype] 1874, 38
Muhlenbergia texana Thurber ex Porter & Coulter [Syntype] 1874, 144
Muhlenbergia texana Thurber ex Porter & Coulter [Isosyntype] 1874, 144
Muhlenbergia texana Thurber ex Porter & Coulter [Syntype] 1874, 144
Muhlenbergia texana Thurber ex Porter & Coulter [Syntype] 1874, 144
Muhlenbergia texana Thurber ex Porter & Coulter [Syntype] 1874, 144