2 GENERAL KEY TO THE GAMOPETALOUS OEDERS. 



* * Ovary either inferior or superior, two-several-celled : stamens free from 

 the corolla or nearly so, inserted with it, as many or twice as many as its 

 lobes or petals, when of same number alternate with them : no stijjules. 

 (Orders from these onward are in Vol. II. Part 1.) 



H— Juice milky excejit in the first order : corolla-lobes valvate or induplicate 

 in the bud. 



74. GOODENIACE.E. Corolla irregular, epigynous. Stamens or at least lilaments 



distinct. Stigma indusiate. Juice not milky. 

 "75. LOBELlACExE. Corolla irregular, epigynous or perigyuous. Stamens five, mona- 



delphous or syngenesious, or both. Stigma not indusiate. Cells of ovary or placentae 



two. Seeds numerous. Juice usually more or less milky and acrid. Inflorescence 



centripetal. 



76. CAMPANULACE^. Corolla regular, epigynous. Stamens five, mostly distinct: 

 Stigmas two to five, introrse, at the summit of the style, wliicli below bears polleu- 

 coUecting hairs. Cells of ovary and capsule two to five, many-seeded. Juice milky 

 and bland. (Exception : Splienodm.') 



•i- H— Juice not milky nor acrid : corolla-lobes or petals imbricate or some- 

 times convolute in the bud. 



77. ERICACEAE, Flowers mostly regular, symmetrical, and tetra-pentamerous through- 

 out : corolla sometimes moderately irregular, epigynous or hypogynous. Stamens 

 distinct, as many and oftener twice as many as petals or corolla-lobes. Cells of the 

 ovary (with few exceptions) as many or even twice as many as the divisions of the 

 calyx or corolla. Style and mostly stigma undivided. 



* * * Ovary superior, many-celled : stamens five to eight, as many as the lobes 

 of the hyi^ogynous corolla, and borne in the throat of its long tube. 



78. LENNOACE.E. Root-parasites. 



* * * * Ovary superior : stamens (or antheriferous stamens) of the same 

 number as the proper corolla-lobes or petals and opposite them : flowers 

 regular. 



+- Ovary one-celled, with solitary ovule or free placenta rising from its base : 

 seeds small. 



80. PLUMBAGINACE.E. Stamens and styles or loljes of the style five, except in 

 Plumbago, the former hypogynous or borne on the very base of the almost or com- 

 pletely distinct unguiculate petals. Ovaiy uniovulate, in fruit becoming an akene ov 

 utricle. Herbs or somewhat shrubby. 



81. PRIMULACE^. Stamens four or five, rarely six to eight, borne on the corolla 

 (or in aianx, which is apetalous, on the calyx alternate with its ])etaloid lobes) : stam- 

 inodia only in Samolus. Ovules several or numerous, sessile on the central placenta. 

 Fruit capsular. Herbs. 



82. MYRSINACE.E. Shrubs or trees, with dry or drupaceous fruit and solitary or 

 very few seeds, usually inmiersed in the placenta : otherwise as Frimidacaw-. 



