INDEX TO VOLUME 33 



Names of species and varieties described as new are in black faced type. 



Abbott, Benjamin Rush, 25 



Abronia villosa, 58 



Acacia gregii, 58 



Acalpha gracilens, 146; virginica, 146 



Acer rubrum, 131 



Achillea millefolium, 103 



Acnida tuberculata, 16 



Acuan illinoensis, 83 



Aesculus parviflora, 49 



Agropyron spicatum, 4 



Agrostis alba, 2 



Ailanthus glandulosa, 50 



Alexander, E. J., 104 



Allen, C. E., 28 



Alternathera philoxeroides, 83 



Amelanchier canadensis, 131 



Ambrosia artemisiifolia, 132; var. 



aelatior, 3 

 Ammodenia peploides, 154 

 Anderson, Gladys P., 49, 109, 157 

 Anderson, Ruth M., 156 

 Andreaea Rothii, 98 

 Andropogon glomeratus, 98 

 Antennaria canadensis, 98 

 Antirrhinum majus, 7 

 Apocynum androsaemifolium, 103; 



cannabinum, 103; hypericiifo- 



lium, 3 

 Aquilegia canadensis flaviflora, 144 

 Aralia elata, 49; nudicaulis, 131 

 Arctostaphylos uvi ursi, 98 

 Arenaria caroliniana, 98 

 Argemone alba, 144 

 Aronia arbutifolia, 22; atropurpurea, 



22; floribunda, 23; melanocarpa, 



22 

 Artemesia gnaphalodes, 84; triden 



tata, 91 

 Asclepias quadrifolia, 103 

 Ashe, W. W., 19 

 Asimina triloba, 49 

 Aspidium spinulosum, 131 

 Asplenium Ruta murana, 50 

 Asprella Hystrix var. Bigeloviana, 2 



Aster cordifolius, 18; divaricatus, 3, 

 18; ericoides, 18, laterifiorus, 18; 

 macrophyllus, 18; novae angliae, 

 18; paniculatus, 18; puniceus, 

 18; tortifolius, 60 



Atriplex confertifolia, 92; hastata, 83; 

 hymenelytra, 58 



Avery, George S., 19 



Backus, Myron P., 105 



Bailey, L. H., How Plants get their 

 Names, review, 96 



Baileya multiradiata, 61 



Balsamorhiza sagittata, 4 



Barrett, Mary Franklin, Three Keys to 

 Wild Flowering Plants, review, 150 



Barrows, Florence L., 19 



Bartram, Edwin B., Manual of Ha- 

 waiian Mosses, review, 151 



Bern-, Edward J., A Jacaranda from 

 the Pliocene of Brazil, 38 



Betula populifolia, 131; pumila, 100 



Biatorella clavus, 154 



Bidens cernua, 3; vulgata, 3 



Biorbia fossilia, 15; rugosa, 15 



Blackberry from Colombia, A new, 

 H. H. Rusby, 41 



Blakeslee, A. F., 105, 157 



Bleimeyer, Rose T., 19 



Bliss, Carl E., 98 



Bogush, E. R., The Palous Prairie 

 Balsam root, 4 



Book reviews, Bailey, How Plants get 

 their Names, 96; Barrett, Three 

 Keys to Wild Flowering Plants, 

 150; Bartram, Manual of Ha- 

 waiian Mosses, 151; Darlington, 

 Recent Advances in Cytology, 

 73; Harned, Wild Flowers of the 

 Alleghanies, 95; Heald, Manual 

 of Plant Diseases, 151; St. John 

 and Hosaka, Weeds of the Pine- 

 apple Fields of the Hawaiian Is- 

 lands, 17 



161 



