| Title | Explorations and Surveys for a Railroad Route from the Mississippi River to the Pacific Ocean. Description of the Mosses and Liverworts |
| Abbreviation | Pacific Railr. Rep. 6, Pt. 3, No. 2 (Williamson & Abbot) |
| Authors | J. S. Newberry: A. Gray: John Torrey: W. S. Sullivant: E. Tuckerman |
| Publication Dates | 1857 |
| URL | http://cprr.org/Museum/Pacific_RR_Surveys/index.html |
| Remarks | Four Subdivisions: I. Exogenous Plants. Pages [65]-90. Newberry, Gray & Torrey; II. Endogenous Plants. Pages [90]-92. Torrey; III. Mosses and Liverworts.. Pages 93-94. Sullivant; IV. Lichens. Page 94. Tuckerman; see J. Arnold Arb. 24: 242. 1943. |
The Harvard University Herbaria hold 7 type specimens of taxa described in this publication
Hemitomes congestum A. Gray [Holotype] 1857, 80Hulsea nana A. Gray [Holotype] 1857, 76
Ivesia gracilis Torrey & A. Gray [Holotype] 1857, 72
Penstemon gracilentus A. Gray [Type] 1857, 82
Penstemon newberryi A. Gray [Type] 1857, 82
Penstemon glaucifolius A. Gray [Type] 1857, 82
Emmenanthe parviflora A. Gray [Holotype] 1857, 84