CONSPECTUS. 71 



Group XVI. — Polygalales. 



Ovary compound, 2-celled. Calyx free. Sepals and petals irregular. 

 Stamens monadelphous; the tube of filaments open on one side, and more or 

 less united with the claws of the petals. Seeds albuminous. 



Order 43. — Polygalace^e. — Flowers unsymmetrical. Petals naked. 

 Anthers one-celled, opening by pores. Seeds carunculate. 



Group XVII. — Leguminales. 



Ovary simple or solitary. Calyx free ; fruit a legume. Corolla papili- 

 onaceous or regular. Stamens diadelphous, monadelphous or distinct. Seeds 

 exalbuminous. 



Order 44. — Fabace^e. — Flowers polypetalous, (or apetalous.) Carpel 

 solitary, with the style proceeding from the apex of the ovary. 



Group XVIII. Rosales. 



Ovaries one or many, simple and distinct, or forming a compound ovary, 

 with two or more cells and the placentae axile. Petals and stamens inserted 

 on the calyx. Seeds exalbuminous. 



Order 45. — Rosacea. — Flowers polypetalous. Carpels free from the 

 calyx, and quite or almost so from each other. 



Order 46. — Drupace^e. — Flowers polypetalous, regular, drupaceous. 

 Carpel solitary, with the style proceeding from the apex of the ovary. 



Order 47. — Pomaces. — Flowers polypetalous, regular. Carpels adher- 

 ing to the calyx by their back. 



Group XIX. — Myrtales. 



Ovary compound, with two or more cells, placenta axile. Stamens definite 

 or indefinite. Calyx free or adherent. Embryo with little or no albumen. 



Order 48. — Myrtace^e. — Ovary with more than one cell. Flowers poly- 

 petalous or apetalous. Calyx imbricated. Stamens indefinite. Anthers 

 oblong. • Leaves usually dotted. 



Order 49. — Lythraceje. — Calyx free, tubular, permanent, with the petals 

 on the margin. Exalbuminous. Leaves opposite. Stamens definite. 



Order 50. — Onagrace^e. — Ovaries several. Flowers polypetalous or apeta- 

 lous. Calyx valvate. Stamens definite. Cotyledons flat, much larger than 

 the radicle. 



Group XX. — Cucurbitales. 



Ovary compound, 2 to several celled (or one-celled by abortion) ; placentae 

 parietal. Calyx adherent. Corolla frequently monopetalous. Stamens 

 united either by their filaments or their anthers. Flowers monoecious or 

 dioecious. 



Order 51. — Cucurbitace^e. — Fruit pulpy. PI acentae parietal ; mostly 

 monopetalous. 



Group XXI. — Saxifragales. 



Ovaries two or more, many-ovuled, distinct, or partly united ; sutural or 

 axile placentae. Seeds indefinite, with a little albumen. Petals and stamens 

 inserted on the calyx. 



Order 52. — Saxifragaceje. — Styles distinct. Leaves alternate. 



