SCROPHULARIACEAE 111 



Corolla 4-5 lobed, flowers axillary or in axillary racemes. 



11. Veronica. 

 Anther bearing stamens 4, capsule never flattened or emarginate. 

 Stamens 5, but 1 sterile. 



Sterile stamen a mere scale adnate to the corolla. 



3. Scrophularia. 

 Sterile stamen as long or nearly as long as the others. 



4. Pentstemon. 

 Stamens 4. all anther bearing. 



Corolla regular or slightly 2-lipped. 

 Flowers solitary on scape-like peduncles. 9. Limosella. 



Flowers axillary, or in terminal, bracted racemes. 



Stamens nearly equal, corolla tube short. 13. Afzelia. 



Stamens very unequal, corolla tube several times as long 

 as the calyx. 14. Gerardia. 



Corolla distinctly 2-lipped. 



Leaves entire or serrate, never pinnately lobed. 

 Leaves opposite; flowers axillary, mostly solitary. 

 Calyx tube longer than the teeth, distinctly angled. 



5. Mimulus. 

 Calyx parted, the tube much shorter than the segments, 

 not angled. 6. Monniera. 



Leaves alternate, flowers spicate. 



Upper lip of the corolla much longer than the lower. 



15. Castilleya. 

 Upper lip of the corolla shorter than the lower. 



16. Orthocarpus. 

 Leaves pinnately lobed or parted. 17. Pedicularis. 



1. Verbascum. 819. 



1. Verbascum thapsus L. Mullen. 



Introduced in the eastern part of the state, but not common. Bruns- 

 wick; Holdrege; Lincoln; Oreopolis; Peru; Scotia. 



2. Linaria. 821. 



Flow^ers yellow, 2.5-3 cm. long. 1. L. linaria. 



Flowers white or blue, 6-8 mm. long. 2. L. canadensis. 



1. Linaria linaria (L) Karst. Butter-and-Eggs, Yellow Toad-Flax. 

 Linaria vulgaris Hill. 



Introduced and common locally. Brunswick; Ewing; Lincoln; Min- 

 den; Red Cloud. 



2. Linaria canadensis L. Blue Toad-Flax. 

 Reported only from Ewing. 



3. Scrophularia. 822. 



Corolla dull outwide; sterile stamen deep purple. 1. S. marylandica. 



Corolla shining outside; sterile stamen greenish yellow. 



2. S. leporella. 



