

IE ! 





104 



HOW PLANTS ARE CLASSIFIKD AND STUDIED. 



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yellow: petals nono : leaves rounded, not cut." This brings you to the name 

 of the genus — in Latin or scientific form, Cd/f/ia : in English, Mahsu-Maui- 

 GOLD, Being the only spi^cies, we need go no further with it. • 



' 325. ( )n reflection and comparison, you will ju'reeive the family likeness between 

 tlie Marsh- Marigold and the Crowfoot, difl'erent as they are in some particulars ; 

 and between these and the (Jlobe- flower, the (jlold-thi'ead, the Anemony, and even 

 the liarkspur and Aconite, wlien you have studied these [)lants. Hut the family 

 likeness is not quite so strong at first view in this family as it is in most others. 



32'>. Another example we will take from the plant tigtu'ed on }). 5 and the fol- 

 l(Swing ))ages (Fig. 4-19), a very common ornamental twiner about lK)Uses, flower- 

 ing all throuLrh the summer. I^egin, as before, on p. 109. ^'ou perceive at once 

 tluit the plant belongs to Class i. ; for it has netted-veined leaves, the }-arts of the 

 flower are in fives, and the embryo (which is easily exti'acted from the fresh .seed. 

 Fig. 16-19) has a pair of seed -leaves. There is a regular pistil, and the seeds in 

 a pod ; .so the plant belongs to Subela.ss I . Thi>re is both calyx and corolla, the latter 

 of one])iece; .so theplant l)el(mgstothe Monopetalous division, p. 1 13. Thecorfdla 

 is borne on the receptacle below the ovary ; so you ])ass to the head B. "J'he 

 stamens are just as many as the lobes, or rather here the plaits, of the corolla ; so 

 you pa.ss No. i and take No. 2. The stamens stand before tl»e jdaits, so that they 

 would be alternate with the (livisif)ns of the corolla, if it were not that the five 

 petals it consists of are united to the very top ; so you take the second of the two 

 lines commencing with the woi-d ** Stamens." These aj-e " in.serted on the corolla," 

 and are entirely .separate and " free from the stigma ; " so you take the fourth line 

 of those iji the next rank, 'i'here is a style (p. 1 14) ; so the plant falls under the 

 se-'ond of the two lines of the next rank. The ovary and pod have 3 cells; so it 

 fnlls under the third of the lines beginning with the word "■ Ovary." The .stamens 

 are 5, and the pod few-seeded (2 seeds in each cell) ; so it falls under the third of 

 the lines beginning with " Stamens " The plant twines, and the seeds ai*e large ; 

 «a you are brought to the name of the family, the Coxvor.vui-rs Family, and are 

 referred to p. 18S. Read over the marks of the family, and then search for the 

 genus in the key or arrangement ; and you will find that the name of the genus 

 is, in scientific language, Ipomoed, in popular English, Mountxg-Glory. 



327. One more example, to .show how plants are to be studied by the Flora, 

 will be sufiicient. Take the Lily of the Valley (Fig. 3 on p. i), which in this 

 c&untry adorns almost every flower-garden. 



