Fig. 72. 



Ch. XX.] CLASSES AND ORDERS. Hi) 



CLASS 1. MONANDRIA.* One stamen. 

 It contains two orders. 



507. The first order of the first class is Monogynia^ or one 

 pistil. There are few plants in this class ; the genus Hippn- 

 ris, or mare's tail, which grows in water and marshes, and is-, 

 therefore aquatic, belongs here. It is considered a perfect flower, 

 because it has a stamen and pistil, though it has neither calyx 

 nor corolla. 



508. Look at Fig. 72, and you will 

 see at a, that tli stem is erect and 

 simple; the leaves linear, acute, and 

 groAving in uho7'ls. 



At 6, is a representation of a flow- 

 er of this plant as seen through a mi 

 croscope ; the germ is egg-shaped ; 

 the style is long and awl-shaped ; the 

 stigma is small and pointed ; the an- 

 ther is large, and connected to the germ 



o j o 



by a short filament. 



You must study the explanations 

 and look at the figure until you can 



f 



tell the different parts as represented. 



509. Southern countries have some very valuable plants oi 

 this class ; as the Arrow-root, which, when made into gruel, is 

 nourishing to the sick ; persons have sometimes lived for weeks 

 upon this ; it has been found very beneficial for feeble children 

 who could not bear milk. This substance looks like starch, 

 and is prepared by wetting it first with a little cold water, and 

 then pouring upon it boiling w r ater in the same manner as for 

 making starch. 



510. The Ginger is botanically called Zinziber, a name 



* Here the pupil can consult pages 24 and 25, where he will find that 

 Monos is the Greek for one, and andria for stamen ; therefore the 1st 

 class is called Monandria, because it has one stamen. For an expla- 

 nation of the names of the orders, he must look to Chap. V. It is re- 

 commended to the teacher to examine the pupil closely upon the classes 

 and orders, and especially the derivation of the terms by which they 

 lire designated. 



507. What is said of the 1st order of the class Monandria'? 



508. What does Fig. 72 represent 1 



509. Wha: is said of the Arrow-root 1 



510. What is said of Ginger 1 



