FLORA OF THE DISTRICT OF COLUMBIA. 253 



10. Veronica polita Fries. 

 Lawus and waste ground; frequent. March-May. Native of Eur. 



16. LEPTANDRA Nutt. 



1. Leptandra virginica (L.) Nutt. Culver's-root. 



Woods or thickets;, frequent. July-Aug. Eastern U. S. (Vei-onica virginica L.) 



16. BXJCHNERA L. 



1. Buchnera americana L. Blue-hearts. 

 Dry soil; infrequent. May-Sept. Eastern U. S. 



17. ATJREOLARIA Raf. False foxglove. 



Plants glabrous throughout or nearly so. Flowers stalked. 



Leaves all or nearly all lobed 1. A. virginica. 



Leaves entire, or the lowest toothed 2. A. laevigata. 



Plants viscid-hairy, at least above. 

 Flowers nearly sessile; corolla glabrous outside; upper leaves entire or with few 



short broad lobes 3. A. villosa. 



Flowers long-stalked; corolla hairy outside; leaves all deeply lobed, the lobes 

 'narrow 4. A. pedicularia. 



Ir Aureoiaria virginica (L.) Peunell. 



Dry woods near Great Falls and Hyattsville Aug.-Sept. Eastern U. S. (Gerardia 

 virginica B. S. P.; G. quercifolia Pursh; Dasystoma virginica Britten.) 



2. Aureoiaria laevigata Raf. 



Mouth of Difficult Run, Sept., ]fl09 (F. W. Pennell). Eastern U. S. {Gerardia 

 laevigata Raf.; Dasystoma laevigata Raf.) 



3. Aureoiaria villosa (Muhl.) Raf. 



Dry woods and thickets; frequent. July-Aug. Eastern U. S. {Gerardia Jlava and 

 Dasystoma Jlava of most authors. ) 



4. Aureoiaria pedicularia (L.) Raf. 



Dry woods and thickets, north and east of Washington. Aug.-Sept. Eastern U. S. 

 {Gerardia pedicularia L.; Dasystoma pedicularia Benth.) 



18. AGALINIS Raf. PuRrLE foxglove. 



Pedicels shorter than the calyx or but slightly exceeding it 1. A. purpurea. 



Pedicels twice as long as the calyx or often much longer. 

 Corolla 2-lipped, 10-18 mm. long, the 2 upper lobes ascending over the stamens 

 and style, glabrous within at base of upper lobes; seeds dark brown; leaves 



linear, usually straight, finely rough-hairy 2. A. tenuifolia. 



Corolla not evidently 2-lipped, the lobes all spreading, pubescent within at the 

 base of the upper lobes; leaves mostly filiform, often curved, glabrous. 



Seeds dark brown; corolla 20-25 mm. long, purple 3. A. holmiana. 



Seeds light brown; corolla 15 mm. long, pink 4. A. decemloba. 



1. Agalinis purpurea (L.) Britton. 



Moist woods and fields; common. Sept. Eastern U. S. {Gerardia purpurea L.) 



2. Agalinis tenuifolia (Vahl) Raf. 



Dry woods and fields; frequent. Aug.-Oct. Eastern N. Amer. {Gerardia tenui- 

 folia Vahl.) 



8. Agalinis holmiana (Greene) Pennell. 



Dry woods and fields; frequent. Sept.-Oct. Southeastern U. S. {Gerardia hol- 

 miana Greene.) 



The type was collected at Brookland. 



