PHANEROGAMIA 



569 



green shrub with bright red campanulate flowers and small red drupes, yields 

 Folia TJvae Ursi. 



Fig. 547. — Arctostaphylos Uva ursi. 1, Flowering branch ; 2, flowers in longitudinal section ; 3, 

 pollen-grains ; 4, fruit ; 5, fruit in transverse section. — Officinal. (After Berg: and Schmidt.) 



Family Pyrolaeeae. — As in the preceding family, except that the 

 placentae are very FLESHY and the embryo NOT segmented. Humus- 

 plants with or without chlorophyll : e.g. Pyrola (Winter-green), ever- 

 green perennials with racemes of white flowers ; Monotropa (Indian 

 Pipe), devoid of chlorophyll. 



Order 2. Diospyrinae 



Flowers aetinomorphie ; *Kn, Cn, A2n, G(n), where n is usually 4 or 5 ; 

 andrceoium adnate to the corolla, diplostemonous, or, by suppression, haplo- 

 stemonous ; ovary multiloctjlar, with only one or few ovules in each loculus. 

 Evergreen woody plants. 



Family Sapotaceae. — Flowers hypogynous. Tropical trees with latex in 

 secretory cells. 



Officinal. — Gutta-percha, the dried latex of species of Palaquium (Malay 

 Archipelago). 



Family Styracaceae. — Flowers perigynous or epigynous. Without latex. 

 Chiefly tropical. 



Officinal. — Benzoinum, a resin procured by making deep incisions in the 

 bark of Styrax Benzoin. 



Order 3. Primulinae 



Flowers HYPOGYNOUS, aetinomorphie, K5, C5, A5, G(5) ; androe- 

 cium adnate to the corolla, epipetalous ; ovary unilocular, with 



FREE CENTRAL PLACENTATION. 



The Primulinae exhibit the greatest diversity in their vegetative 

 structure. Constant characters appear only in the flowers, which, 

 however differently shaped and grouped, always have an epipetalous 



