

CONTENTS. 





1. Reports for the Year 1893: 



PAGE. 





a. Report of the Officers of the Board 7 



b. Fifth Annual Report of the Director 11 



2. Anniversary Publications: — 



a. Fourth Annual Flower Sermon — 



By Bt. Bev. Thomas U. Dudley 23 



b. Proceedings at the Fourth Annual Banquet of the Trustees 



of the Garden 38 



3. Scientific Papers : — 



a. A Study of the Venation of the Species of Salix described 



in Gray's Manual, with Reference to their Determina- 

 tion — 



By Dr. N. M. Qlatfelter 46 



6. Material for a Monograph on the Tannoids, with Special 

 Reference to Vegetable Physiology — 

 By J. Christian Bay 61 



c. The Sugar Maples, with a Winter Synopsis of all North 



American Maples — 



By William Trelease 88 



d. Revision of the North American Species of Gayophytum 



and Boisduvalia — 

 By William Trelease 107 



e. Phenological Notes for 1892 and 1893 — 



By J. C. Whitten 123 



/• The Emergence of Pronuba from the Yucca Capsules — 



By J. C. Whitten 137 



g. Notes on a List of Plants Collected in Southeastern Mis- 

 souri — 



ByB.F.Bush 139 



h. Notes and Observations — 

 By William Trelease. 



1. Pachira, sp 154 



2. Crassula quadriflda 157 



3. Cotyledon orbiculata 158 



4. Cucumis Melo Dudaim 160 



5. Tillandsia utriculata 162 



6. Agave parviflora 164 



7. Yucca Guatemalensis 165 



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