282 FLORA OF PHILADELPHIA. 



4. VINCETOiXIOUM Walt. < 



1. ViNCETO'xrcuM OBLiquuM (Jacq.) Britton. 'M?. 'p. 748. Thickets. Sum- 

 mer. 

 Philadelphia— Fairmaunt Park, Maaayunk, Dr. J. B. Brintbn (He.), 

 Belmont (Te.), mouth of Wissahickon, not seen recently (Wni). Mont- 

 gomery— -Lafayette^ Ivy Rock (Wn.)., p.elaware-r(P.').., Chester— Greenr 

 tree (Te!), Valley Forge (VP.). Lancaster— (P.). 



Perikloca, GtBAJ!Ca L. Cultivated: 



Philadelphia — Byberry, Mart. (B. C). Delaware— Painters ' 

 Arboretum (Fu.)., 



OVdef '5, POLEMONIALES. 



Corolla regular (irregular in Echium of Boraginaceae). 



., Ovary: not 4-lobed, the carpels not separaitingi as distinct nutlets at 

 maturity. . 

 dvary 2-ceIled, rarely 3-4-celled; style I, entire, 2-cleft or 2-parte<i; 

 ' l "'"' ' mostly twining vines. 



Leaves normal. Fam.Jl. Convolvuktceae. 



White or yellowish parasitic vines, the: leaves reduced' to minute 

 scales. . F^ffi- 2 r ^GmaMt&ceae., 



Ovary 3-celled; stigmas 3, linear; herbs, not twining!" ' 



Fam. 3. Polemoniaceae. 

 Ovary 1-eelled ; style 1-2-lobed' or ipwted ; herbs, not twining. 



Fam. 4. Hydrophyllaceae. 

 ■ Ovstry' deeply 4-lobed around the' style; or riot lobed [ (Bfeliotrtopiunl) ;• ' 

 carpels separating as nutlets. Fam. 5i 'JBwitginttoeae. 



Corolla, irregular, more or less 2-lipped (regular in Solanaeeae, Mentha and 

 Lycopus,. and, nearly or quite so, in Verbena).. 

 Carpels 1-2-seecled. 



Ovary not lobed, 2-4-ceiled', the Style apical; carpels separating into 



1-seeded nutlets. Fam: 6. Verberfaceae. • 



Ova*y 4-lobed. around the style:, the lobes- ripening into 1-seeded 

 nutlets; Fam. 7. LabiatOf?. 



Carpels several:many-seeded (2-seeded in some Acanthaceae). 



Fruit a berry, or 'more' commonly a capsule 1 , which is' 1-2-celled, 2- 

 valved, cireumscissile; or irregularly bursting, riot elastically 

 dehiscent. . , 

 Placenta axile, , 



Ovary 2-ceiled, or rarely 3-5-celled. 



Flowers' tegular; fertile stamens 5' (4 in Petunia) ; 

 fruit a berrj or capsule. 



Fam. 8. Solanaeeae! 

 Flowers more or less irregular; fertile stamens 2 or 

 4(5 in Verbascum) ; fruit a capsule. 



Fam. 9. Scrophvilariaeeae. 

 Ovary 1-celled; marsh or aquatic herbs with flowers on 

 scapes. Fam. 10. Lentibulariaceae. 



Placentae parietal. 



Herbs, parasitic on the roots of other plants, the leaves 

 reduced to scales, not. green ; ovary >celj«d. 



Fam, 1\. Orpbanchaceae. 

 Trees, vineB, shrubs, or herbs, the foliage normal. 



Trees, shrubs', or woody vines ; capsule 2-celled ; seeds 



•winged;-' Fam. 12. Biynoniaceae. 



Opposite-leaved herbs ; capsule 1-celled-; seeds wing- 

 less. Fam. 13. Martyniaceae. 



