145 



it, but in the same ravine visited in April, or one very close to 

 it, I found a considerable quantity of another Umbellifer, that 

 I had never seen outside of the coastal plain before, namely, 

 Trepocarpus Aethusae Nutt., in bloom. That is a fairly common 

 plant in rich calcareous bottoms in the black prairie belt of 

 central Alabama, but its occurrence in a ravine among the 

 rocky hills was rather unexpected. However, I had already noted 

 that several plants have their southern limits in this region, and 

 others their northern or inland limits, and these two Umbelli- 

 ferae make another such pair, Erigenia from the north and 

 Trepocarpus from the south. 



One other Umbelliferous plant deserves mention here. It is 

 not an associate of Erigenia in any sense, but I saw a great deal 

 of it in June in the neighborhood where the first Alabama speci- 

 men of Erigenia came from. It is Daucus Carota L., an intro- 

 duced weed of European origin. It is common in the north- 

 eastern states, especially in regions that have been cultivated 

 25 years or more, 5 and as far south as the northern third of 

 Georgia. It is not known in the coastal plain of Georgia, and in 

 traveling northward through the coastal plain from Georgia to 

 New York in July, 1909, I did not see it south of Elizabeth 

 City, N. C., though it was common nearly everywhere north of 

 there. 6 



Strange to say, the only Alabama station for it recorded by 

 Dr. Mohr is on ballast near Mobile, and it may not have per- 

 sisted there, for that is far out of its normal range. 7 Dr. Mohr 

 of course visited Huntsville, on account of the many things of 

 botanical interest there, but must have done so only in spring, 

 for if he had ever been there in summer he could hardly have 

 failed to notice that Daucus Carota is one of the commonest 

 roadside weeds around there. In Alabama it seems to be pretty 

 well confined to a rather small area in the northeastern corner 

 of the state, though. On June 17, 1921, traveling southwest- 

 ward from Rome, Georgia, on the railroad toward Selma, Ala., 

 I saw plenty of the Daucus as far as the state line, but little or 



6 See L. H. Dewey, Yearbook U. S. Dept. Agric. 1896: 280, 282, 1897. 



6 See Bull. Torrey Club 37: 595. Jan. 1911. 



7 A remarkable outlying station for it, reported by George V. Nash (Jour. 

 N. Y. Bot. Gard. 6: 180. Nov. 1905) is in fields near Marmelade, Haiti, about 

 2750 feet above sea-level. There it is doubtless a relic of the French plantations 

 of the 18th century. 



