XCV1 NATURAL ARRANGEMENT. 



Anthers 2-celled. ERICACEAE, p. 165. 



GROUP 5. Ovary mostly free, several-celled, with a single ovule (at 

 most a single seed) in each cell. Seeds mostly albuminous. Stamens 

 definite, as many as the lobes of the (sometimes almost dialypeta- 

 lous) corolla, and alternate with them or 2 to 4 times as many: 

 anthers not opening by pores. 



Stamens as many as the corolla-lobes. AQUIFOLIACEAE. p. 175. 

 Stamens more numerous ; polygamo-dioicous. EBENACEAE. p. 176. 



GROUP 6. Ovary mostly free, 1-celled, with a free central placenta. 

 Stamens inserted into the regular corolla opposite its lobes, which 

 they equal in number. Seeds albuminous. 



Herbs : fruit capsular. PRIMULACEAE. p. 177. 



GROUP 7. Ovary free, 1-celled with a single ovule, or 2-celled 

 with several ovules attached to a thick central placenta. Stamens 

 as many as the lobes of the regular corolla. Seeds albuminous. 



Ovary 2-celled ; style single ; stamens 4. PLANTAGINACEAE. p. 176. 

 GROUP 8. Ovary free, 1- or 2- (or spuriously 4-) celled, with 

 numerous ovules. Corolla, irregular (sub-bilabiate); stamens in- 

 serted upon its tube, and mostly fewer than its lobes. 



Ovary 1-celled, with a central placenta. LEOTIBCLACEAE. p. 180. 



Ovary with parietal placentae. OROBANCHACEAE. p. 180. 

 Ovary spuriously 4- or 5-celltd. Sub.Ord. SESAMEAE. p. 182. 



Ovary 1-celled; placentae in the axis. 



Seeds indefinite, winged. BIGNONIACEAE. p. 182. 



Seeds few, wingless. Corolla convolute. ACANTHACEAE. p. 183. 



Seeds mostly indefinite. Corolla imbricative. SCROPHULARIACEAE. p. 183. 



GROUP 9. Ovary free, 2- to 4-lobed, splitting into as many 1-seeded 

 nutlets, or drupaceous. Corolla irregular or regular ; stamens in- 

 serted on its tube, fewer than its lobes or as many. Albumen little 

 or none. 



Stamens 4, diclynamous, or 2. Corolla more or less irregular. 



Ovary not 4-lobed. VERBENACEAE. p. 194. 

 Ovary Globed, forming 4 nutlets. LABIATAE. p. 196. 

 Stamens 5. Corolla regular. EORAGIJSACEAE. p. 214. 



GROUP 10. Ovary free, compound, or the carpels mostly 2 and 

 distinct ; the ovules several or numerous. Corolla regular ; stamens 

 inserted upon its tube, as many as the lobes and alternate with 

 them. Seeds albuminous. 



f Ovary compound (of 2 or more united carpels). 



Placentae 2. parietal. Embryo minute. 



Leaves lobed. Seeds few. HYDROPHYLLACEAE. p. 218. 



Leaves entire. Seeds indefinite. GENTIANACEAE. p. 229. 



Placentae in the axis. Ovary 2- or 3-celled. 



Embryo large, lent or coiled. CONVOLVULACEAE. p. 220. 



Embryo straight or arcuate. Styles united. 



