io6 CLASSIFICATION OF MONOCOTYLEDONS 



19. Boraginacea. Ovary four-lobed, four-chambered, with one 



ovule in each chamber. Fruit four nutlets. 



(2) Flowers zygomorphic (stamens fewer than the petals ; 

 corolla irregular). 



20. LabiatcR. Ovary four-lobed, four-chambered, with one 



ovule in each chamber. 



2 1. ScrophulariacecB. Ovary two-chambered, with several ovules 



in each chamber. 



(b) Flowers Epigynous. Gynaecium syncarpous. 



22. Caprifoliacece. Ovary two- (three-) chambered. Leaves 

 ■> opposite. 



23. Composite . Inflorescence a capitulum. Anthers united. 



Ovary one-chambered, with one ovule. 



Class II.: monocotyledons 



I. Perianth Petaloid. Ovary syncarpous. 

 (a) Flower actinomorphic (perianth regular, ovary inferior). 



24. Liliacece" . Stamens six. 



(b) Flower actinomorphic. Ovary inferior. 



25. Amaryllidacece. Stamens six. 



26. Iridacece. Stamens three. 



(c) Flower zygomorphic. Ovary inferior. 



27. OrchidacecR. Perianth irregular. Usually only one anther 



present ; it is gynandrous. 



II. Perianth small or absent, 

 (a) .Flowers ? c? on a spadix usually in a spathe. 



28. Aracece. 



(b) Flowers usually ? in spikelets invested by chaffy 

 bract-scales. 



29. Graminece. 



[It will be well for young beginners to confine their attention 

 to those families which are specially marked with the sign ° in 

 the above list.] 



