ENDOGEN/E FLORIDA. 



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166. Iridacea. Herbaceous plants or under-shrubs. Stem 

 often a rhizoma or cormus. Leaves usually equitant. Calyx 

 and corolla confounded, sometimes irregular. Stamens 3, from 

 the base of the sepals ; anthers bursting externally. Stigmas 

 3, often petaloid. Albumen corneous, or densely fleshy. 



USES. Crocus sativus has long orange-coloured stigmas, 

 which, when dried, form saffron. Orris-root is the slightly 

 stimulating aromatic rhizoma of Iris florentina and others ; 

 that of I. pseudacorus is acrid, purgative, and emetic. 



TYPICAL GENERA. Iris, Crocus, Tigridia. 



Crocus vernus. 1. A flower split open. 2. The stigmata. 3. A transverse sec- 

 tion of the ovary. 4. A section of the seed to show the embryo. 



167. Bromeliacea. Stemless or short-stemmed plants, with 

 rigid channelled leaves often covered with cuticular scurf. 

 Calyx 3-parted, superior, usually herbaceous. Petals coloured. 

 Stamens 6, or more. Stigma 3-lobed, or entire, often twisted. 



N 2 



