GROUP V., ANGIOSPERM^E : MONOCOTYLEDONE3. 501 



Perianth heterochlamydeous. The leaves are usually long and 

 narrow, sharply serrate; the stem is generally very short. The 

 flowers are $ , and form spikes 

 or panicles with bracts. 



Ananas saliva is the Pine-apple. 

 The fruit is a berry, and the 

 berries of each inflorescence 

 coalesce into a spurious fruit 

 (sorosis), above which the axis 

 of the inflorescence extends and 

 bears a crown of leaves (Fig. 

 311 ; see p. 472). In a state of 

 cultivation the berries contain 

 no seeds. It is a native of 

 America, and is cultivated in 

 all warm countries and in hot- 

 houses. 



Cohort III. Amomales 



(Scitaminese). The flowers 

 are irregular, zygomorphic or 

 asymmetrical : general for- 

 mula, ^ K3, C3, A3 + 3, G (Tt , 

 occasionally with a great re- 

 duction in the androecium. 

 Perianth wholly petaloid, or 

 clearly heterochlamydeous : VQ 311 .l FmHofthePine . apple (rednced) . 

 ovary usually trilocular : 



fruit, a capsule or a berry. Usually no endosperm, but abundant 

 perisperm. They are tall herbaceous plants ; the leaves are large 

 and have pinnate venation. 



Order 1. MUSACEJE. ^ A'3, (73, .43 + 2 f 1 or 0, G 1 ^. Flower 

 dorsiventral ; the anterior external member of the petaloid perianth 

 is usually very large, and the posterior always very small. In the- 

 family Musese the odd sepal is anterior ; the sepals are usually free,- 

 as are also the petals in Ravenala ; but in Strelitzia the two lateral 

 petals are connate, and in Musa the five anterior members of the- 

 perianth are connate, forming a tube which is open posteriorly : 

 the posterior stamen is sterile or absent, and the others are not 

 always fertile. The flower of the family Heliconiese differs from 

 this type in that the odd sepal is posterior, and the abortive 

 posterior stamen belongs to the outer whorl. Seeds, one (Heli- 

 conia), or many, in each loculus, without endosperm. They are 



