1921] NATURAL SCIENCES OF PHILADELPHIA. 515 



sinus. Seeds brown, with reticulations firmer and 

 enclosing broad, angular, not sunken spaces; intrareti- 

 ular lines fine. Leaves somewhat scabrous above. 

 Corolla 15-23 mm. long. Calyx-lobes .2-1 mm. long. 



14a. A. tenufolia leucanthera. 

 Corolla 10-15 mm. long. Calj'x-lobes (.5-) 1-2 mm. long. 

 Branches spreading. Leaves slightly scabrous above 

 spreading. Axillary fascicles slightly or not develop- 

 ed. Filaments lanate. Anther-cells densely lanose. 



14b. A . tenuifolia macrophylla. 

 Branches ascending. Leaves slightly to decidedly 

 scabrous above, ascending. Axillary fascicles relative- 

 ly conspicuously developed. Filaments somewhat lan- 

 ate to glabrous. Anther-cells sparingly to moderately 

 lanose. 14c. A. tenuifolia parviflora. 



Posterior corolla-lobes less than one half length of anterior, 

 flattened-ascending, the corolla 23-27 mm. long, pubes- 

 cent within a narrow line below posterior sinus. Stem 

 scabrillous. Axillary fascicles conspicuously developed. 



15. A. homalantha. 



1. Agalinis heterophylla (Nutt.) Small. 



Gerardia heterophylla Nutt., in Trans. Am. Phil. Soc. XL 5: 180. 1834. 



"'Hab. In the prairies of the Arkansas, near Great Salt River," Oklahoma. 



Type probably a specimen seen in Herb. Columbia University, labeled 



"Arkansas, Nuttall, Gerardia trifida." 

 Gerardia crustata Greene, Leaflets Bot. Obs. & Grit. 2: 108. 1910. "Sap- 



ulpa, Indian Territory, 21 Sept. 1894, collected by B. F. Bush. Type 



specimens in mj- herbarium." Type, Bush 417, seen in Herb. Greene, now 



at the University of Notre Dame. It is the prevalent form with leaves 



all entire. 

 Agalinis heterophylla (Xutt.) Small; Britton & Brown, 111. Fl. N. Un. St. & 



Can. ed. II. 3: 209. 1913. 



Corolla pale-pink, with two yellow lines and many diffused small 

 purple-red spots within throat anteriorly. Flowering from late 

 August to early October. 



Sandy or sandy loam, or rarely black calcareous soil, prairie or 

 occasionally pineland, southeastern Missouri and northeastern 

 Oklahoma to southw^estern Louisiana and southeastern Texas. 

 Chiefly on the Coastal Plain: most frequent in the coastal prairie 

 and on the edge of the salt-marshes, less frequent to occasional 

 through the short-leaf pine belt and on alluvial soils to southeastern 

 Missouri, and occasional in the black calcareous prairie of central 

 Texas; inland locally frequent in the sandy prairies of eastern 

 Oklahoma. 



Arkansas. Lincoln: Varner, Bush 132 (M, U, Y). Pulaski: 

 Little Rock, Hasse (Y). 



