Part 4 
June 18, 1921 
185 Rosa “‘Edith Cavell” . 
186 Rudbeckia laciniata . 
187 Penstemon secundiflorus 
188 Pinus Thunbergii 
' 189 Physalis Franchetii. 
190 Pterostyrax hispida . . 
191 Koelreuteria paniculata 
192 Epiphyllum Hookeri . 
Index . 
Taxonomic Sates to Volumes 1 to 5. 
Alphabetic Index to Volumes 1 to 5 
CONTRIBUTORS TO VOLUMES 1 TO 5 
The numerals refer to the volume-number. 
John Hendley Barnhart . 
Eugene Pintard Bicknell . 
Kenneth Rowland Boynton . 
Elizabeth Gertrude Britton 
Nathaniel Lord Britton . 
Henry Allan Gleason . 
Charles Arthur Hollick . 
Kenneth Kent Mackenzie. . 
Charles Frederick eae 
George Valentine Nash . 
Francis Whittier Pennell 
Joseph Nelson Rose 
Henry Hurd Rusby . 
John Kunkel Small 
Arlow Burdette Stout 
William Trelease . 
Elba Emanuel Waited. 
Percy Wilson . 
ADDISONIA 
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NOR WOaAkWaAUUbDY h WOM UN Hw wr 
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Bieta ae ek te 
