GENERA OR FAMILIES. 35 



** Florets all perfect (\. e. "both staminate and pistillate) and 

 ligulate. 



(62) Leontodon pappus pilose, filiform, soft, deciduous, beak 

 long ; involucre of fruit reflexed. 



24. Primulaceous Plants. PRIMULACE^E. 



(63) Primula leaves all radical ; flowers solitary or umbellate, 



on radical peduncles ; ovary superior. 



25. Apocynaceous Plants. APOCYNACE.E. 



(64) Vinca corolla hypocrateriform, with a cylindrical tube, and 



flat spreading limb of oblique segments. 



26. Gentianaceous Plants. GENTIANACE^S. 



* Terrestrial plants with opposite leaves. 



(65) G-entiana calyx not divided below the middle; stamens 



five ; style two-lobed, persistent. 



** Aquatic plants, with alternate leaves. 



(66) Menyanth.es leaves trifoliolate ; corolla fringed within. 



27. Boraginaceous Plants. BORAGINACE^:. 



* Corolla without scales at the mouth of the tube. 



(67) Pulmonaria calyx tubular, the lobes not reaching to the 



middle ; stamens included in the tube of the funnel-shaped 

 corolla. 



** Corolla having the mouth of the tube more or less closed 

 by subulate 



(68) Symphytum corolla tubular-campanulate, with five small 

 teeth ; filaments entire. 



D 2 



