INDEX 



XI 



Apr. 4, 1944, 42 



Apr. 19, 1944, 42 



May 2, 1944, 43 



May 17, 1944, 76 



Oct. 3, 1944, 76 



Feb. 1, 1944, 15 



Feb. 16, 1944, 39 



Mar. 7, 1944, 40 



Mar. 15, 1944, 40 



Primus, 49 ; serotina, 72 

 Pseudolarix amabilis, 68 

 Piieraria Thunbergiana, 34 



Quercus palustris, 72 



Rehder, Alfred, On the concept of type, 6 

 Review: Allard H. A. & Leonard, E. C, 



The vegetation and floristics of Bull 



Run Mountain, Virginia, 36 

 Rhisophora Mangle, 65 

 Rhizophydium coronum, 31. 

 Rhododendron lincarifolium, 6 ; macrosepa- 



lum, 6, 7 

 Rice, Myron Arthur, Notes on Spcrgu- 



laria, 74 

 Robinia Pscudoacacia, 68, 70 

 Rosa Roxburghii, 7; xanthina, 7 

 Rubber, Western Hemisphere natural, 17 

 Rnppia maritima, 62 



Sagittaria lancifolia, 62 



Salvinia rotundifolia, 61 



Schisothrix calcicola, 59; lacustris, 59 



Scirpus calif ornicus, 64 ; cubensis, 64 



Scleria latifolia, 64 ; microcarpa, 64 



Scorzoncra, 27 



Shoot apex of the cycads, 52, 76 



Shull, George H., Some genetical studies 



with Capsella, lecture, 42 

 Solidago altissma, 24 ; gigantea, 24 ; leaven- 



■worthii, 24 ; sempervirens, 24 

 Spergularia, Notes on, 74 ; alata, 74, 75 ; 



media, 74, 75 

 Spiraea prunifolia, 7 

 Stangeria, 56 

 Stic herns Intermedins, 40 



Stout, A. B., Inactivation of incompatibili- 

 ties in tetraploid progenies of Petunia 

 axillaris, 45, 76 



Streptopus ample xifolius, 60 



Svenson, H. K., Through the flowering 

 season at the Brooklyn Botanic Garden, 

 lecture, 39 



Taraxacum kok-saghys, 14, 24-28 



Tephrosia, 1, 2 



Thalassia testudinum, 63 



Thom, Charles, A mycologist looks at 



antibiotics, especially penicillin, lecture, 



12 

 Tilia tomentosa, 72 

 Treasurer's Report for 1943, 16 

 Trichocerus spachianus, 53 

 Trichoderma, 12 

 Trifolium, 34 

 Tristicha hypnoides, 65 

 Tulipa, 49 



Type, On the concept of, 6 

 Typha tnixillcnsis, 62 



Ulmus proccra, 72 ; pumila, 68 

 Utricularia obtusa, 65 



V allisneria americana, 63 



Volvox, Morphology, cytology, and taxon- 

 omy of, lecture, 42 ; aureus, 42 ; Carteri 

 var. Haseni, 42; var. homothallicus, 43; 

 globator, 42 ; Migula, 43 ; mononae, 43 ; 

 tertius, 42 



Whaley, W. Gordon, 16 ; Western Hem- 

 isphere natural rubber, 17 

 Wood products conference, 78 



Yuncker, T. G., Cuscuta japonica Choisy, 

 an Asiatic species new to America, 34 



Zamia, 52, 54 ; integrifolia, 53 ; latifolia, 56 ; 

 silvicola, 55 ; umbrosa, 56 



ERRATA 



p. 27, 1. 24, for Asclepias syrica read A. syriaca. 



p. 32, 1. 17, for Catenochytrium read Catenochytridium. 



p. 42, 1. 7, for Schull, read Shull. 



