26 Addisonia 



flowered kinds is an erect shrubby plant of the Everglades (see 

 plate 135 of this work), the other is a prostrate herbaceous plant of 

 the rocky pinelands of the Everglade Keys. The species here illus- 

 trated is white-flowered and grows in hammocks on the eastern 

 coast of Florida and on low prairies on the western side of the 

 peninsula. 



This plant was discovered in Brazil and was first described in 

 1817, figured in 1821, and first found in Florida about the middle of 

 the last century. Thus it represents one of a number of plants 

 common to Florida and South America whose seed may have been 

 carried north or south by migratory birds. 



The most luxurient growth yet encountered, is in the Deering 

 Hammock at Cutler. There it occurs as a robust plant, often a 

 yard tall. On the prairies w^est of the Everglades it is usually, if 

 not always, stunted, but quite abundant. Large areas of the 

 prairies are often carpeted with a low growth of it. 



Like its yellow-flowered relative of low situations, Heliotropium 

 Leavenworthii, the flowers of this heliotrope are very faintly fragrant 

 or inodorous, while the flowers of another relative, Heliotropium 

 horizontale, of the pine-lands of the Everglade Keys, are as fragrant 

 as those of the commonly cultivated heliotrope, Heliotropium peru- 

 vianum. 



The specimens from which the accompanying illustration was 

 made were collected by the writer in the Deering Hammock, 

 Cutler, Florida, May 13, 1918. 



John K. Small. 



Explanation of Plate. Fig. 1. — Flowering stem. Fig. 2. — Root. Fig. 

 3.— Calyx, X 3. 



