642 



BOTANY 



PART II 



Ovary unilocular, superior, with a free-central placenta. K 5, C (5), 

 A + 5, Ct (5). 



Family 1. Primulaceae, Herbs, often with conspicuous flowers. Calyx green. 

 Style, unbranched. Numerous ovules. Fruit, a capsule (Figs. 671-673). 



Fig. 670. — Pulmjuium Giitta. (i nat. size. After Schumann and A. Meyer. 



Generally distributed, but especially in the northern hemisphere. 



Important Genkiia. — Primula, with several British species. Herbs with rosettes 

 of leaves. Flowers solitary or in mnbellate inflorescences. The capsules open by 

 five teeth at the summit. Commonly grown as ornamental plants. Aiuujallis, 

 capsule opens by a lid (py.xidium). Stem prostrate, with leaves in decussate pairs 

 (Fig. 672). Lysimachia, large herbaceous plants, with erect or creeping stems and 



il 



