162, BOTANICAL ANALYSIS. 



528. To determine the Order, the (5th) pupil reads the first alternative^ or trip- 

 let, noted by a star (*), and comparing his plant, finds it to correspond with the first line, 

 for it is an " herb with alternate leaves." Pass now to (12). 



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



" Flowers irregular," &c. The flower is regular. Pass to (14). 



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

 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 alter- 

 native. (9.) Next, the pupil reads and compares his specimen with the triplet (d), 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 ROSACE^E. 



529. 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 Genera. (10.) A pupil reads the 

 couplet marked A, and determines that the " Ovary is superior, fruit not enclosed," &c. 

 Pass to (a). 



11. "Carpels 00. Calyx persistent, with 5 bractlets added," characterizes our plant. 

 Pass to (/), which is Tribe V. Pass on to (ff). (12.) The next pupil determines that the 

 " style is deciduous." Pass to (k). (13.) " Torus spongy or dry," Is true of our speci- 

 mens. Pass to (I). (14.) " Bractlets 5" reads the next, and announces the plant to be a 

 Potentilla. Now all turn to Genus 13, and together verify this result by reading and com- 

 paring the stated character of the genus. 



530. To determine the Species. (15.) As our plant has " stamens OO and flow- 

 ers 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 6. 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 AN ENDOGEN. 



531. A grass-like, blue-flowered herb is now supposed to have becu discovered and dis- 

 tributed to the Class for analysis. Having (1) determined that it is an Endogen (for it has 

 " parallel-veined leaves and 3-parted flowers"), they would now (2) determine its Class, 

 whether the 3d or the 4th. Tbey read, 



" Flowers without glumes, and colored," &c. 



" Flowers with green alternate glumes, and no perianth." The first line is adopted, and 

 Petaliferae is its Class. Pass next to (t) Cohorts 5th or 6th, and read, 



(8.) " Cohort 5. Flowers 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 Florideae. Pass to F. 



(4.) The next pupil having read and compared the first couplet under " F, Cohort G, 

 f lorideae," chooses the second line. Pass to No. 2. (5.) " Perianth tube adherent to the 

 ovary" is adopted. Pass to (4). (6) " Flowers perfect." The second line of this couplet 

 is true of onr plant. Next pass to (6). The (7) pupil reads "Anthers 3 or 6," which is 

 true of the plant. Pass to (e). (8) " Perianth glabrous outside" is true. Next read (d). 

 (9) "Anthers 3, opening lengthwise, outward," is also true, and our plant is thus traced 

 to the order IHIDACE Jt. 



532. To determine the Genus and Species under the IriJ?. Order 146, is the next and 

 the last step. Having carefully compared their specimens with the characters ascribed 

 to the Irids, the pupils next apply to the Table of the Genera. (10.) "Flowers regular 

 and equilateral," in the first dilemma, is chosen. Read the (*) couplet next. (11.) " Sep- 

 als similar to the petals in form, size, and position" is true. Next to (a). (12.) " Stamens 

 monadelphous. Flowers small, blue. Plants grass-like," describes the plant truly, and 

 it must be a Sisyrhinchium. They turn to Genus 7, and verify by leading its characters. 

 Lastly, the brief diagnoses of the two species are compared, and the plan'- is found to be 

 8. Bermudiana. 



