Details - Monograph of North american Cyperaceae ; by John Torrey, to which is appended a Monograph of the North american species of Rhynchospora, etc. ; by Asa Gray

Monograph of North american Cyperaceae ; by John Torrey, to which is appended a Monograph of the North american species of Rhynchospora, etc. ; by Asa Gray

Title

Monograph of North american Cyperaceae ; by John Torrey, to which is appended a Monograph of the North american species of Rhynchospora, etc. ; by Asa Gray