298 FLORA OF PHILADELPHIA. 



2. Plantago halophila Bicknell. M. p. 1051. Salt marshes. Summer. 



New Jersey — Frequent along the coast. 



3. Plantago Bugellii Dec. M. p. 857. Fields, woods and waste places. 



Summer. 



4. Plantago lanceolata L. Ribgrass, Ripplegrass. M. p. 857. Fields and 



waste places. Spring to fall. 



5. Plantago mabitima L. M. p. 858. Salt marshes and seashores. Sum- 



mer. 



6. Plantago amstata Michx. M. p. 859. Dry grounds. Spring to fall. 



Bucks— Sellersville, Tullytown (Fr.). Delaware— Tinicum. Lancaster 

 —Paradise (St.). Northampton— 'EsstoTO., Porter (B. C). 

 New Jersey— Common, A^jy, 1 ,' <,} '.V v _ ""^t W. 

 1: Plantago Vikginica L; M. p. 859. Dry soil. Spring and summer. 



8. Plantago elongata Pursh. M. p. 859. Dry, sandy soil. Spring and 



summer. 



Philadelphia — Fairmount Park, I. Burjc (Fu.). 



Camden— Haddonfield (,C.)'. Ocean— Forked Eiver (Mac.). Monmouth 

 — Keyport (C.): 



New Castle— Near S. H. No. 7,, Tatnall;, Quarryville and opposite 

 Eockf ord, Commons. 



9. Plantago heterophylla Nutt. M. p. 859. Moist soil. Spring and 



summer. 

 Philadelphia— Philadelphia Navy Yard, .1. Burlc (Fu.). 

 Plantago Cobonopbis L. . M. p. 859. Ballast. 

 Camden — Kaighn's Point (Ja.). 



Order Y. RUBIALES. 



Leaves always stipulate, usually blackening in drying. 



Fam. 1. Rubiaceae. 

 Leaves usually estipulate; mot blackening in drying; " Fam. 2. Caprifoliaceae. 



Family 1. RUBIACEAE B. Juss. Madder Family. 



Leaves opposite, stipulate (sometimes verticillate in No. 3). 

 Ovules numerous in each cavity of the ovary; herbs. 



Top of the* capsule free from the ovary; seeds few, peltate. 



1. Houstonia. 

 Capsule wholly adnate to the ovary; seeds minute, anp-nlnr. 



2. Oldenlandia. 

 Ovules 1 in each cavity of the ovary. 



Shrubs or small trees; flowers in dense globular heads. 



3. Cephalanthus. 

 Low evergreen herbs; flowers 2 together, their ovaries united. 



4. Mitchella. 

 Herbs; flowers axillary, nearly sessile, distinct. 5. Diodia. 



Leaves appearing verticillate; herbs (some of the leaves rarely opposite in 

 No. 6). 

 Corolla rotate; calyx-teeth minute or none. 6. Galium. 



Corolla funnelform. 7. Sherardia. 



1. HOUSTONIA L. 



Plants 7-18 cm. high; peduncles 1-flowered. 1. H. coerulea. 



Plants 10-25 cm. high ; flowers cymose. 2. H. longifolid. 



