TEE PLANT WORLD LNDEX, VOL. LIL mi 



PAGE 



Indoor Rockery, An 186 



L'is hecragona, Range Extension of 92 



Iowa, The Twin Leaf {Jeffersonia dl2)]iyll(i^ in 41 



Irises 179 



Jack Oaks in Oklahoma 165 



{Jeffersonia dlphylhi)^ The Twin Leaf, in Iowa 41 



Judging by the Fruits 116 



Junijyerus Sabina, Southern Limit of 140 



Landscape Gardening, Horticulture and, at the Pan-Ameri- 

 can Exposition 188 



Leaves and Flowers, Abnormal 53 



Local Common Names of Plants, Some 132 



Long Island, The Violets on 91 



{LinmBa horealis) in Pennsylvania, The Twin-Flower 133 



Making of a Herbarium, The 54 



Mistletoe in Pennsylvania, The Small ., 60 



Mosses, Notes for the Bemnner in the Studv of 145 



Nameless Plants, Some ^ 106 



Names of Plants, Philadelphia Botanists Commemorated in the 74 



Names of Plants, Some Local Common 132 



Native Orchids 88 



Native Veo-etation, The Preservation and Protection of . . . . 108 



Naturalized Compositae 134 



Neviusia, A Visit to the Home of 136 



New Jersey Pine Barrens in July 1 



New Jersey, Quaker Bridge 124 



New York and Tennessee, The Hart's-Tongue in 129 



Notes for the Beginner in the Study of Mosses 145 



Notes on the Edible Berries of Alaska 17 



Number of Plants Known to Science 151 



Observations of Root-Hairs, A Few 182 



Observations on a Woodland Fire 4 



Ohio, The Velvet Dogbane in 40 



Oklahoma, Jack Oaks in 165 



Ophioglossum, Notes on 154 



