A partial list of the siphonogams found in and near Soldiers Delight choess Sun, 02/25/2024 - 20:26 Read more about A partial list of the siphonogams found in and near Soldiers Delight
Site survey summary — Octoraro Slopes, Maryland, 16 June 1988 and 5 October 1988 choess Sun, 02/25/2024 - 20:25 Read more about Site survey summary — Octoraro Slopes, Maryland, 16 June 1988 and 5 October 1988
A geological account of the Unionville Serpentine (Corundum Hill region) choess Sun, 02/25/2024 - 20:24 Read more about A geological account of the Unionville Serpentine (Corundum Hill region)
The ferns of the county line serpentinite dike choess Sun, 02/25/2024 - 20:21 Read more about The ferns of the county line serpentinite dike
Letter of February 4, 1970, to Robin Hart at West Chester State College choess Sun, 02/25/2024 - 20:20 Read more about Letter of February 4, 1970, to Robin Hart at West Chester State College
The herpetofauna of Nottingham Park and the Serpentine Barrens of Chester County, Pennsylvania choess Sun, 02/25/2024 - 20:19 Read more about The herpetofauna of Nottingham Park and the Serpentine Barrens of Chester County, Pennsylvania
Some Pennsylvania barrens and their flora. I. Serpentine choess Sun, 02/25/2024 - 20:15 Read more about Some Pennsylvania barrens and their flora. I. Serpentine
Plant bugs (Heteroptera: Miridae) of Phlox subulata and other narrow-leaved phloxes in eastern United States choess Sun, 02/25/2024 - 20:12 Read more about Plant bugs (Heteroptera: Miridae) of Phlox subulata and other narrow-leaved phloxes in eastern United States
Diabrotica cristata, a chrysomelid (Coleoptera) of relict midwestern prairies discovered in eastern serpentine barrens choess Sun, 02/25/2024 - 20:09 Read more about Diabrotica cristata, a chrysomelid (Coleoptera) of relict midwestern prairies discovered in eastern serpentine barrens
A study of seepage wetlands in Pennsylvania choess Sun, 02/25/2024 - 20:07 Read more about A study of seepage wetlands in Pennsylvania