PHENOLOGICAL NOTES AT THE MISSOURI BOTANICAI, 

 GARDEN, FOR 1892 AND 1893. 



BY J. C. WHITTEN. 



During the last two years phenological observations have 

 been made upon various plants in the arboretum. The 

 notes on herbaceous plants and such woody plants as grow 

 in the bog, were made in 1892 by Thomas Doss. His 

 notes for 1893, on the same plants, were unfortunately lost. 

 Notes upon the other woody plants were made in 1892 by 

 F. W. Dewart and in 1893 by the writer, whom the 

 Director of the Garden has requested to prepare these 

 notes for publication. 



Students of natural history have, from time to time, 

 published observations upon the date of leafing, flowering 

 and fruiting of plants, have cited the relation of climate to 

 plant growth, and touched upon the importance of tfiis 

 study to the practical cultivator. Among American publi- 

 cations upon the subject may be mentioned those by 

 Britton, in the Bulletin of the Torrey Botanical Club, vi, 

 211 and 235; Henry, in the Report of the Board of 

 Eegents of the University of Wisconsin, 1891, p. 35; 

 Trelease, in the Report of the Agricultural Experiment 

 Station of the University of Wisconsin for 1883, p. 56, 

 1884, p. 59 ; Halsted, in Iowa Agricultural College Bulletin, 

 1886, p. 43 ; and Pammel in Bulletin of the Torrey Botan- 

 ical Club, xix, 375. An article on "the philosophy of 

 the flower seasons," by Henry L. Clarke, appeared in The 

 American Naturalist of September, 1893. 



These observations are of value from several stand-points. 

 The time of leafing, flowering and fruiting of a species 



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