BOTANICAL ANALYSIS. 197 



(4.) "Corolla with the petals distinct." This characterizes our plant, and 

 it is pronounced one of the Polype talae. Refer them to A. 



509. To determine the Order, the (5th) pupil reads the first alternative, 

 or triplet, noted by a star (*), and comparing his plant, finds it to corre- 

 spond with the first line, for it is an "herb with alternate leaves." Pass now 

 to (12). 



(6.) " Mowers regular or nearly so. Fruit never a legume." 



"Mowers irregular," etc. The flower is regular. Pass to (14). 



Again, a (7th) pupil reads, " Stamens 310 times as many as the petals." 

 ''Stamens few and definite." The stamens are many. Pass to (15). 



(8.) The next pupil reads, compares, and determines that the stamens are 

 "perigynous on the base of the calyx," and announces the letter (d) as the 

 reference to the next alternative. (9.) Next, the pupil reads and compares 

 bis specimen with the triplet (tf), and concludes that the sepals are 5, and 

 Imbricated in the bud. Consequently, it is announced that the plant in hand 

 belongs to the Order ROSACES. 



510. To determine the Genus. After a careful comparison of their 

 specimen with the diagnosis of the Roseworts (Order 44), in order to verify 

 the analysis thus far, the learner or the class will then consult the table of 

 the Q-enera. (10.) A pupil reads the couplet marked A., and determines that 

 the "Ovary is superior, fruit not inclosed," etc. Pass to (a). 



(11.) "Carpels 00. Calyx persistent, with 5 bractlets added," characterizes 

 our plant. Pass to (/), which is Tribe V. Pass on to (g). (12.) The next 

 pupil determines that the " style is deciduous." Pass to (k). (13.) " Torus 

 spongy or dry," is true of our specimens. Pass to (I). (14.) "Bractlets 5" 

 reads the next, and announces the plant to be a Potentilla. Now all turn to 

 Q-enus 13, and together verify this result by reading and comparing the stated 

 character of the genus. 



511. To determine the Species. (15.) As our plant has " stamens OO 

 and flowers yellow" it must be a true Potentilla. Pass to (a). (16.) "Leaves 

 palmately 3-foliate " suits our plant. It is, therefore, either species No. 3, 4, 

 or 5. Lastly (17), after a due comparison of their plant with each of these 

 three species, it is determined that it is P. Norvegica. 



ANALYSIS OF A MONOCOTYLEDON. 



512. A grass-like, blue-flowered herb is now supposed to have been dis- 

 covered and distributed to the Class for analysis. Having (1) determined 

 that it is a Monocotyledon (for it has " parallel- veined leaves and 3-parted 

 flowers "), they would now (2) determine its Class, which is HI. 



" Mowers without glumes, and colored," etc. 



"Mowers with green alternate glumes, and no perianth." The first line 

 is adopted, and the plant agrees with Petaloideae. Pass next to (t) Cohorts 

 5th or 6th, and read, 



(3.) "Cohort 5. Mowers on a spadix, apetalous or incomplete." 



" Cohort 6. Flowers complete, with a double perianth " which 

 answers to the specimens in hand, and it is seen to belong to the Petaloideee. 

 Pass to P. 



(4.) The next pupil having read and compared the first couplet under 

 "F, Cohort 6, Petaloideae," chooses the second line. Pass to No. 2. (5.) 

 "Perianth tube adherent to the ovary" is adopted. Pass to (4). (6.) "Flow- 



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