460 Harper: Collection of Plants in Georgia 



cene, overlaid by Lafayette and Columbia. My numbers 671-724 

 were collected in Coffee county, between September 2 1 and 26. 



On the morning of the 28th I went from Douglas to Savannah. 

 The afternoon of the same day I made a trip to Thunderbolt, a 

 few miles south of Savannah, and collected nos. 725-731 in the 

 salt marshes there; and on the 29th I spent most of the day on 

 Tybee Island, in the same county (Chatham), at the mouth of the 

 Savannah River. This is the easternmost point of Georgia. 



Although Tybee is a famous summer resort, and the only 



island on the Georgia coast reached by railroad, it seems to have 

 been almost entirely overlooked by botanists. The flora of Tybee 

 is such as might be expected anywhere along the Georgia or 

 Carolina coast, and although most of the plants I collected there 

 were new to me, few are of especial interest. The surface of the 

 whole island is covered with the sands of the Columbia formation, 

 and the most conspicuous geological feature is the line of sand 

 dunes along the shore, the largest ones being about twenty feet in 



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height. On these I did most of my collecting, and also photo- 

 graphed a number of characteristic plants which I did not collect, 

 such as Sabal Palmetto, Uniola paniadata. Yucca gloriosa, etc. 

 One Tybee Island I collected plants numbered 732 to 754, and 

 this ended my collecting for the summer. 



During 106 days spent in Georgia I collected plants in twelve 

 counties, and made notes on the flora of fifteen others which I 

 passed through. Besides my regular collection of spermatophytes 

 and pteridophytes I collected a few sets of bryophytes and thal- 

 lophytes, amounting to 86 numbers, which were numbered sepa- 

 rately from the rest. I crossed every geological formation rec- 

 ognized in the state (about twenty-five in number), though I did 

 not collect plants on all of them. The observations I made on 

 the relations between geological formations and existing flora prom- 

 ise to yield some interesting results when properly correlated. 



The figures on Plate 29 are from photographs made with a 

 hand camera of 4-inch focus, and are reproduced nearly natural 



size. 



It would be impracticable to give here a complete enumeration 



M 



summer, but in the following notes I will mention some of the new 



