172 SCfiOPHULAEIACEAE 



10. GRATIOLA L. Hedge Hyssop. 

 Herbs with opposite leaves and axillary flowers. Calyx segments 

 nearly equal. Corolla somewhat 2-lipped. Flowers 2- bracteolate at base. 

 Sterile filaments wanting in our species. 



Stems glandular-puberulent. 1. G. Virginiana. 



Stems glabrous. 2. O. sphaeroearpa. 



1. G. Virginiana L. Erect annual, V-Vi' high: leaves sessile, ob- 

 long-lanceolate, serrate : corolla white with a yellowish tube, 4" long : 

 pods ovoid. — Locally common in wet places. Lake City, Buokner, Grain 

 Valley. May-July. 



2. G. sphaeroearpa Ell. Annual, ascending, 2''-18'' long : leaves 

 sessile, ovate-oblong, serrate ; corolla white with a yellowish tube, W-V 

 long : capsule globose. — Frequent locally in wet places. Lake City, Ath- 

 erton. May-August. 



11. ILYSANTHBS Eaf. False Pimpernel. 

 Herbs with opposite leaves and axillary flowers. Upper lip of corolla 

 2-cleft, the lower 3-lobed. Flowers not braoteolate at base. One of the 

 lobes of the sterile filaments glabrous, the other glandular. 



Peduncles longer than the leaves. 1. J. graiioloides. 



Peduncles shorter than the leaves. 2. I. attenuata. 



1. I. gratioloides ( L. ) Benth. Erect, 3'-\2' high, glabrous : leaves 

 sessile, ovate-oblong, very sparingly toothed : flowers light purple, 4" 

 long : capsule exceeding the calyx. — Wet prairies in the northwestern 

 part. Locally common. June-September. 



2. I. attenuata (Muhl. ) Small. Ascending, 3'-15' long, glabrous: 

 leaves sessile, ovate, very sparingly toothed : flowers as in the last : cap- 

 sule about the length of the oalyx. — Common throughout in wet places. 

 June-October. 



12. LIMOSELLA L. 



Mud annuals with filiform runners, basal clustered leaves and 1- flowered 

 peduncles. Corolla nearly regular, 5-cleft 



1. L. aquatica L. Mudwoet. Leaves I'-S' long, expanding into an 

 entire linear-oblong blade : corolla whitish. — One clump found on a mud 

 bank along the Missouri River near Courtney. July. 



13. VERONICA L. 



Lowest segment of corolla the narrowest Capsules compressed, notched 

 at the apex. 



Flowers in axillary racemes. 1. V. Anagallia-aquatica. 

 Flowers axillary. 



Flowers white. 2. V. peregrina. 



Flowers blue. 3. V. arvenm. 



1. V. Anagallis-aquatica L. Water Speedwell. Perennial, 1° 

 high, glabrous : leaves ovate-lanceolate, sessile, more or less clasping, 



