XIV KEY TO THE ORDERS. 



B. Stamens not more than twice a* many as tbe petals. 



* Stamens just as many as the petals, and one stamen in front of 



each petal. 

 BERBERIDACE^E. Herbs (with us). Anthers opening by 



uplifting valves 10 



PORTULACACE^E. Sepals 2. Styles 3-cleft. Leaves 2, 



fleshy 37 



VITACE^E. Shrubs, climbing by tendrils. Calyx minute. 44 



RHAMNACE^E. Shrubs, not climbing 45 



PLUMBAGINACE^E. Herbs. Calyx plaited. Styles 5. 



Ovary 1 -celled and 1 -seeded 144 



Lysimaehia, in 



PRIMULACE.E, is occasionally polypetalous. Flowers yel- 

 low, in axillary spikes ; the petals sprinkled with 

 purplish dots 145 



* * Stamens either just as many as the petals and alternate with 



them, or not of exactly the same number, 

 4- Corolla irregular. 



FUMARIACE^E. Corolla flattened and closed. Stamens 6. 15 



VIOLACE.*:. Corolla 1 -spurred. Stamens 5. Pod with 3 



rows of seeds on the walls 26 



BALSAMINACE^E. Corolla 1-spurred, the spur with a tail. 



Stamens 5. Pod bursting elastically 42 



POLYGALACE^E. Lower petal keel-shaped, usually fringed 

 at the top. Anthens 6 or 8, 1 -celled, opening at 

 the top. Pod 2-celled 48 



LEGUMINOS^;. Corolla mostly papilionaceous. Filaments 

 often united. Ovary simple, with one parietal 

 placenta. Leaves compound 49 



l- -f- Corolla regular, or nearly so. 



1. Calyx superior (i.e., adherent to the ovary, wholly or 

 partially). 



(a) Stamens perigynous (inserted on the calyx). 



Cratsegus, in 



ROSACE^E. Shrubs. Stamens occasionally from 5 to 10 only. 



Leaves alternate, with stipules. Fruit drupe-like, 



containing 1-5 bony nutlets 62 



SAXIFBAGACE^:. Leaves opposite or alternate, without 



stipules. Styles or stigmas 2 ; in one instance 4. 



Ovary 1 -celled, with 2 or 3 parietal placentae. ... 75 



