i.KssoN 32.] now ro srinv im.ant.s 193 



the bloji.-oin, holds good universally, while the plan of tlie stem 

 does. 



5J9. The single flower of our plant with distinct calyx and corolla 

 takes us over the Spadieeous to the Pktaloidkols Diviision : 

 the Petaloideous Division of Endogens there begins on p. 28. 

 These parts being free from and beneath the ovary, refer us to the 

 thirtl subdivision, viz : "3. Perianth ivliolly free from the ovari/." 



559". The pistil is next to be considered : it accoi-ds with the third 

 of the tri|)let: "Pistil one, compound (cells or jilacenlae 3) ; anthers 

 2-celled." Under this follows a triplet, of which the initial word is 

 '•Perianth": our choice falls upon the first, as there is nothing 

 "glumaceous" about this flower. 



560. The succeeding triplet relates to the stamens; here 6, so 

 we take the first alternative. The next refers to mode and place of 

 growth : our plant is " Terrestrial, and not rush-like." The ne.xt 

 again to the perianth : the second number of the triplet : " Perianth 

 of 3 foliaceous and green sepals, and 3 colored withering-persistent 

 petals" (as would be seen after Howering-time), brings us to a par- 

 ticular group in the great Lily family, or Liliacic.e, p. 520. 



5GI. Reading over the family character, and collating the five 

 tribes comprised, we perceive that our plant belongs to the group, 

 quite peculiar among Liliaceous plants, here ranked as Tribe L 

 TuiLLiDKyE, the Trillium tribe. And the next step, leading to a 

 choice between two genera, determines the genus to be Trillium. 



562. Turning to this, on p. 522, and reading the full description 

 of it, we proceed to the easy task of ascertaining the species. The 

 "flower is raised on a peduncle," as in § 2. This peduncle is slender 

 and nearly erect, and all the other particulars accord with the sub- 

 division marked by a single star. And, finally, the ovate, acutish, 

 widely-spreading, dark dull-purple petals mark the species as the 

 PuupLii BiuTiiuooT, Trillium kkkctum, L. 



503. By the Field, Forest, and Garden Botany, the analysis is 

 similar, only more simple. The details need not be particularly 

 recapitulated. 



5G4. The student residing west of New Ktigland will also be 

 likely to find another species, with similar foliage, but with larger, 

 pure white, and obovate petals, turning rose-color when about to 

 fiide. This will at once be identified as T. yrandifturum. And 

 towards the north, in cold and damp woods or swamps, a smaller 

 17 



