172 SCROPHULARIACEAE 



10. GRATIOLA L. Hedge Hyssop. 

 Herbs with opposite leaves and axillary flowers. Caly.x segments 

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

 Sterile filaments wanting in our species. 



Stems glandular-puberulent. 1. G. lirginiana. 



Stems glabrous. 2. G. sphaerocarpa. 



1. G. Virginiana L. Erect annual, l'-12^ high: leaves sessile, ob- 

 long-lanceolate, serrate : corolla white with a yellowish tube, A'^ long : 

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

 Valley. May-July. 



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

 sessile, ovate oblong, serrate : corolla white with a yellowish tube, Q"-T' 

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

 erton. May-August. 



11. ILYSANTHES Raf. False Pimpernel. 

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

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

 lobes of the sterile filaments glabrous, the other glandular. 



Peduncles longer than the leaves. 1- /. grntioloides. 



Peduncles shorter than the leaves. 2. /. attenimta. 



1. I. gratioloides (L.) Benth. Erect, 3'-12^ 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 (JIuhl.) Small. Ascending, 3'-15'' long, glabrous: 

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

 sule about the length of the calyx.— 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. aquatlca L. Mudwoet. Leaves l'-5' long, expanding into an 

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

 bank along the Missouri Kiver near Courtney. July. 



13. VERONICA L. 



Lowest segment of corolla the narrowest Capsules compressed, notched 

 at the apex. 



Flowers in axillary racemes. 1- T. Anagullia-aqualica. 



Flowers axillary. 



Flowers white. 2. V. percgrina. 



Flowers blue. 3. T. arveiisis. 



1. V. Anagallis-aquatica L. W.\tee Speedwell. Perennial, 1° 

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



