DIV. II 



ANGIOSPERMAE 



673 



and do not become green. Ficia Faba, the Broad Bean, is an erect plant, without 



tendrils ; the terminal leaflet is reduced to a bristle-shaped stump. Phaseolus, 



Kidney Bean, and Physostigma 



are twining plants with tripin- 



nate leaves. Physostigma veno- 



sum, a West African climber, 



yields Calabar Bean. 



POISONOUS. Among our 

 common Leguminosae only 

 Laburnum vulgare and the 

 related genus Cytisus are 

 extremely poisonous. Coronilla 

 varia (Fig. 713), with umbels of 

 rose-coloured flowers, a^nd Wis- 

 taria sinensis are also poisonous. 



OFFICIAL. Astragal us gum- 

 mifer and other species yield 



TRAGACANTHA. GLYCYRUHIZAE 



RADIX is obtained from Gly- 

 cyrrhiza glabra. tipartium sco- 

 parium yields SCOPARII CACU- 

 MIXA. Andira araroba, .a 

 Brazilian tree, contains a 

 powdery excretion in cavities 

 of the stem called ARAIIOBA ; 

 CHRYSAROBINUM is obtained 

 from this. The heart-wood of 

 Pterocarpus santalinus, an East 

 Indian tree, is PTEROCARPI LIG- 

 NUM. KINO is obtained from 

 the juice flowing from incisions 

 in the trunk of Pterocarpus 

 marsupium. Myroxylon toluifera (S. America) yields BALSAMUM TOLUTANUM, and 

 M. Pcreirae (San Salvador) BALSAMUM PERUVIANUM. Arachis hypogaea yields 

 OLKUM ARACHIS. Butea frondosa yields BUTEAE GUMMI. 



FIG. 713. Coronilla varia (nat. size). PofSOXOUS. 



Order 20. Myrtiflorae 



This order differs from the Rosiflorae by the inferior ovary and 

 the absence of stipules. 



Family 1. Thymelaeaceae. Ovule pendulous. Daphne Mezereum (Fig. 714) 

 is a poisonous shrub, possibly native to Britain, which flowers in February and 

 March before the leaves appear. The flowers are rose-coloured, scented, tetramerous, 

 and have no corolla. The leaves form a close tuft until the axis elongates. The 

 fruit is a- bright red berry. In the Alps and in the Mediterranean region there 

 are several species of Daphne, all of which are poisonous. 



OFFICIAL. Daphne Mezereum, D. Laureo/a, and D. Gnidium yield MEZEREI 

 CORTEX. 



Family 2. Elaeagnaceae. Ovule erect, ffippophae. Elaeacjnus. The leaves 

 and young twigs are covered with shining peltate hairs. 



Family 3. Lythraceae. Ly thrum salicaria. Purple Loosestrife. Flowers 



2 x 



