1921] NATURAL SCIENCES OF PHILADELPHIA. 509 



coarsely toothed. Petioles apparently mostly only 

 5-6 mm. long 3. A. grandiflora. 



Calyx-lobes linear to lanceolate, entire to slightly dentate. 

 Bracts entire to serrate. Petioles mostly 10-15 mm. 

 long. 

 Upper leaf-blades gradually smaller than the lower, 

 relatively large. Pedicels stout. More densely cine- 

 reous. 3a. A. grandiflora cinerea. 

 Upper leaf-blades rather abruptly smaller than the lower, 

 relatively small. Pedicels slender. Less densely cin- 

 ereous. 3b. A. grandiflora serrata. 

 Plants glabrous to minutely puberulent. Wings one fourth 

 to two fifths the diameter of the seed. Calyx-lobes entire. 

 Stem finely puberulent, not glaucous. Pedicels and calyx 

 externally puberulent. Corolla 40-50 mm. long. 



4:. A. dispersa. 

 Stem glabrous, glaucous. Pedicels and calyx externally 

 glabrous. 

 Leaf-blades, at least the lower, somewhat pinnately cut, 

 the segments lanceolate or broader. Corolla 40-60 mm. 

 long, somewhat pubescent within above bases of fila- 

 ments. Awn of anther 1-1.5 mm. long. Capsule 15-29 

 mm. long. Plant relatively stout. 



5. A. flava macrantha. 

 Leaf-blades all very deeply pinnately cut, the segments 

 linear-lanceolate or nearly hnear. Corolla 40-45 mm. 

 long, glabrous within above bases of filaments. Awn of 

 anther 1.5-2 mm. long. Capsule 12-15 mm. long. 

 Plant relatively slender. 6. A. calycosa. 



1. Aureolaria pectinata (Nutt.) Pennell. 



Gerardia pedicularia pectinata Nutt., Gen. N. Am. PI. 2: 46. 1818. "Hab. 

 In the sandy pine forests of Carolina and Georgia." Probable type, 

 collected by Nuttall and now in the British Museum, has been verified by 

 Dr. S. Moore as the plant here considered. 



Aureolaria pectinata (Nutt.) Pennell, in Bull. Torr. Bot Club. 40: 314. 1913. 



Corolla yellow, externally more or less tinged with reddish, within 

 not marked with purple-red. Flowering from July to October, 

 and soon ripening fruit. 



Dry sandy pine and oak lands, especially hilly, in the Coastal 

 Plain of Louisiana, and doubtless also in eastern Arkansas; on the 

 lower Ouachita Hills in Arkansas. Ranges through the Coastal 

 Plain from South Carolina to Florida and Louisiana. 



Arkansas. Garland: Hot Springs, Pennell 5680 (A, C, H, K, M, 

 P, U, Y). Pulaski: Little Rock, Engelmann 313 (M). 



Louisiana. Caddo: Shreveport, Cocks (L). Rapides: Alexan- 

 dria; Pineville, Pennell 5638 (C, H, L, M, P, U, Y). 



