110 SCROPHULARIALES 



2. Acerates angustifolia (Nutt.) Dec. 



Common in dry soil all over the state. Cherry County; Cowles; Em- 

 erald; Kearney; Lincoln; Plummer Ford; St. James; Sheridan 

 County, 



3. Acerates floridana (Lam.) Hitchc. 



In dry soil throughout the state. Haigler; Hastings; Lincoln; Saline 

 County. 



4. Acerates auriculata Engelm. 



In dry soil in the western part of the state. Banner County; Deuel 

 County; Lewellen; Minden; Valentine. 



5. Acerates lanuginosa (Xutt.) Dec. 



Occurs over most of the state, though not abundant. Crete; Clear- 

 water; Lincoln; Minden; Ponca; Thedford. 



4. Gonolobus. 746. 



1. Gonolobus laevis Michx. Sand Vine. 



Rare in the southeastern corner of the state. Xemaha; Rulo. 



SCROPHULARIALES. 



Flowers regular, fertile stamens 5. (Verbascum.) 1. Scrophuiarlaceae. 

 Flowers irregular, fertile stamens 2 to 4. 

 Leaves green, plant not parasitic. 

 Plants with normal aerial leaves. 



Placentae axile, ovary 1 or 2-celled, capsule not long-beaked. 



Capsule not elastically dehiscent, calyx lobes if filiform much 



less than 2 cm. long. 1. Scrophuiarlaceae. 



Capsule elastically dehiscent, calyx segments, in our species. 



filiform, 2-2.5 cm. long. 5. Acanthaceae. 



Placentae parietal, ovary 1-celled, capsule with 2 curved beaks 



longer than the body. 2. Martyniaceae. 



Plants with floating, finely dissected, bladder-bearing leaves. 



4. Lentibulariaceae. 

 Leaves not green, scaly, plants parasitic. 3. Orobanchaceae. 



1. SCORPHULARIACEAE. 



Fertile stemens 5, corolla regular, rotate. 1. Verbascum. 



Fertile stamens 4 or 2, the fifth if present sterile. 



Corolla spurred at the base. 2. Linaria. 



Corolla not spurred at the base. 

 Anther bearing stamens 2 or if four the capsule flattened and 

 emarginate at the apex. 

 Capsule terete, pointed. 



Flowers solitary in the axils. 



Flowers yellow or whitish, peduncles with 2 bracts at the 



summit. 8. Gratiola. 



Flowers purplish, peduncles bractless. 7. Ilysanthes. 



Flowers in dense terminal spikes. 12. Leptandra. 



Capsule flattened, obcordate or emarginate at the apex. 



Corolla 2-lobed or wanting, flowers in dense terminal spikes. 



10 Besseya. 



