JOURNAL 



OF THE 



ARNOLD ARBORETUM 



Volume III APRIL, 1922 Number 4 



A LIST OF THE SHRUBS OF LOUISIANA 



R. S. Cocks 

 Professor of Botany, Tulane University, New Orleans 



Just as in the list of trees of Louisiana, published in this journal April 

 1921, this catalogue is based almost entirely on the collections of the 

 writer during the past sixteen years. Shrubs which occasionally become 

 arborescent have already been catalogued in the list of trees and are not 

 listed again here. The date of flowering has been given in most cases 

 and is always the earliest date on which the plant was found in bloom. 

 While it is believed that the list of shrubs is fairly complete, there is much 

 still to find out regarding their distribution in the State. A few shrubs 

 have been included, specimens of which were collected in 1840 by Dr. 

 Josiah Hale, of Alexandria, and deposited in the herbarium of the new 

 Orleans Academy of Sciences, the remains of which are now in the herbarium 

 of Tulane University. A few have also been included on the authority 

 of Dr. J. K. Small in his Flora of the Southern States, second edition. 

 In addition to the specimens in Tulane University herbarium, specimens 

 of almost all of the shrubs are in the Arnold Arboretum. As in the case 

 of the trees Professor Sargent has revised the identifications. In some 

 unaccountable manner, in the list of trees, the Live Oak, the best known 

 tree in Louisiana, was omitted and is included here. 



PALMACEAE. 



Sabal glabra (Mill.) Sarg. (S. Adansonii Guerns.) In swampy ground 

 over the whole State. Flowers April 20. Fruit July. 



Serenoa serrulata (Michx.) Hook. f. Dry pine barrens and sandy soil, 

 Washington and St. Tammany Parishes. Flowers May 5. Fruit July. 



LILIACEAE. 



Smilax hispida Muhl. Dry and wet woods everywhere. Flowers 



April 3. Fruit June. 



Smilax pumila Walt. In dry woods over the whole State. Flowers 



April 15. 



Smilax rotundifolia L. Common everywhere in woods and along 



fences. Flowers April 15. Fruit July. 



