290 FLORA OF PHILADELPHIA. 



2. Limosella tenuifolia Hoffm. Mudwort. M. p. 831. Brackish mud. 

 Summer. 

 Philadelphia— Mud Island opposite Torresdale (Wn.)., Bucks ^Anda- 

 lusia, Mart. (Fr.). Delaware -^Tinicum, Aubrey H. Smith (Fu.). Cam- 

 den— Camden (C). Ocean— Bay Head (0.). Monmouth— Long Branch, 

 Spring Lake (C). 



New Castle — Brandywine Creek below railroad, Canby ; Dupont 's 

 Wharf, Commons. • : . 



14. VERONICA L. Speedwell. 



Mowers racemose in the axils of the leaves, bracteolate. 



. Glatirous, or minutely glandular above (No. 3 rarely hairy) ; brook or 

 swamp plants. ><■: 



Leaves ovate, oval, oblong, or oblong-lanceolate; capsule corn- 



Stem leaves sessile, partly clasping, serrulate or entire. 



1. V. Anagallis-aquatica. 

 All the leaves petioled, serrate. 2. V. Americana. 



Leaves linear or linear-lanceolate ; capsule' very flat. 



3. V. scutellata. 

 Pubescent, dry-soil plants ; leaves crenate or dentate. 



4. V. officinalis. 

 Flowers in terminal spikes or racemes, or solitary in the axils; 



Flowers in terminal spikes. .5. V. serpyllifotta. 



Flowers solitary in most of the axils ; peduncles shorter than the leaves. 

 Erect; glabrous or glandular; capsule emarginate. 



6. V. peregrina. 

 Diffuse ; pubescent ; capsule obcordate. 7. V. arvensis. 

 Flowers solitary in the axils; peduncles as long as the leaves or longer. 

 Leaves ovate or oblong, crenate or dentate. 



Corolla not longer than the ealyx; capsule narrowly emar- 

 ginate. , , . 8. V. agrestis. 

 Corolla longer than the calyx; capsule broadly emarginate. 



9. V. Byzantina. 



Leaves orbicular or broader, 3-5-lobed or crenate. i ■ 



10. V. hederaefoUa. 



1. Veronica Anagallis-aquatica L. Water Speedwell. M. p. 832. Brooks 



and ditches. Summer. 



Philadelphia— Wister Wood (Je.) (Re.), Germantawn (Me.), bank of 

 Schuylkill near Philadelphia (Pr.), above Manayunk (VP.). Bucks— 

 Sellersville (Fr.). Montgomery— Shannonville (Cr.), Spring Mills (Ha.). 

 Chest er — Perkiomen Junction (Le.). Northampton — On the Delaware 

 above Easton (P.). 



Hunterdon — Along the Delaware (O). 



2. Veronica Americana Schwein. American BrookUine. M. p. 833. Brooks 



and ditches. Spring and summer. 



3. Veronica scutellata L. Marsh Speedwell. M. p. 833. Bogs. Sum- 



mer. 



Philadelphia— Germantown (Me.). Bucks — Rock Hill (Fr.) (Mac), 

 Hulmeville (Pr.), Haycock Mountain (Ws.). Montgomery — Shannonville 

 (Cr.). fifcgfffrw— (P.). Lancaster— Below McCall's Ferry (Br.), Collins' 

 Ferry (Ca.). Berks — Hamburg (Br.). Northampton — (P.). 



Somerset — Black Swamp (C). Mercer — Crosswick 's Creek (Br.), 

 Princeton Junction (C). Hunterdon— Rosemont (C). 



