1921] COCKS. A LIST OF THE TREES OF LOUISIANA 211 



Crataegus florens Beadle. Abundant in West Feliciana Parish along 

 the roads and on dry rolling hills. Usually shrubby. Flowers March 



31. Fruit August. 



Crataegus apiifolia Michx. Widely distributed over the State, in wet 

 and dry soil, equally common in East and West Louisiana. Flowers 



March 15. Fruit October. 



Crataegus spatJmlata Michx. Widely distributed over the State. The 

 last Crataegus to bloom in the spring. Occurs in a variety of soils and 

 situations. Flowers April 25. Fruit October. 



Crataegus brachyacantha Sarg. & Engelm. Very common in wet Pine- 

 barrens near Covington, St. Tammany Parish; also near Opelousas, St. 

 Landry Parish and in Natchitoches Parish. Usually near water courses. 



Flowers April 10. Fruit August. 



Primus umhcllata Ell. Sandy soil in Pine-barrens. St. Tammany, 

 Tangipahoa and throughout the northern parishes. Flowers 



Fruit October. 



Prunus umhellata var. tarda Wight. Dry woods in vicinity of Natchi- 

 toches, Natchitoches Parish. Flowers March 15. Fruit October. 



Prunus americana Marsh. Swampy woods in vicinity of New Orleans. 

 Flowers February 25. Fruit October. 



Prunus lanata Mack. & Bush. Widely distributed in East and West 

 Louisiana; East and West Feliciana, East Baton Rouge, St. Tammany, 

 Rapides and Natchitoches Parishes. 



Prunus mexicana S. Wats. East and West Louisiana. West Feliciana, 

 East Baton Rouge, Rapides, Natchitoches, Richland, and Calcasieu 

 Parishes. Flowers February 25. Fruit September to November. 



Prunus Munsoniana Wight & Hedr. Common in the vicinity of Natch- 

 itoches, Natchitoches Parish. Flowers March 15. Fruit September. 



March 



ifolia Marsh. W 



Per- 



haps always naturalized. Flowers February 25. Fruit May and June. 

 Prunus serotina Ehrh. Over the state, nowhere very abundant. Flowers 



March 15. Fruit August. 



Prunus caroliniana Ait. All over the State, but as it has been much 

 planted for ornament it has probably often become naturalized. Un- 

 doubtedly native in East and West Feliciana Parishes. Flowers February 

 15. Fruit August. 



LEGUMINOSAE 



Ccrcis canadensis L. Along streams and in rich woods over the State. 



Flowers March 5. Fruit May. 



Gleditsia triacanthos L. Borders of swamps over the State. Flowers 



March 15. Fruit June. 



Gleditsia aquatica Marsh. With the preceding species but not as com- 

 mon. Sometimes forming large thickets in deep water. Flowers IMarch 



15. Fruit June. 



