SYSTEMATIC BOTANY. 



well to read the description of 

 Trientalis, that you may know it 

 when found. 



When you get a head of the 

 purple-blue flowtr; of Brodixea 

 capitata, figured on page xxiv of 

 this book, it will be the proper 

 time to study the figures on this 

 page, and what is here said about 

 the genus they illustrate. 

 ^ Upon p. 113 you will find the 



species grouped under three sub-genera or sections. 

 Figures a, d, and e illustrate the first, c the sec- 

 ond, and b the thii'd. The species belonging to 

 the first section are arranged under two heads 

 marked by asterisks, and those under the first head 

 are under subheads marked by daggers. Species 4 

 and 5 closely rejemljle number 6, which is put un- 

 der a different head, because it has six true or 

 anther-bearing stamens instead of three stamens 

 and three staminodia. Fig. a shows that three of 

 the filaments came near being antherless. Petaloid 

 a. Perianth of Brodisea capitata laid g^aminodia replace these small stamens in species 

 open, with pistil and section of mature ■, ^-i o .-t , -.i x j.i 



1 , rri 4. i> ii ■ +1, 4 and 5, and the fertile stamens are without the 



capsule, b. Two segments of the perianth ' 



of B. lactea and the pistil, c. Perianth and wlnglike appendages shown in Fig. a. Observe 



pistil of B. laxa. d. Bud and flower of B. that the staminodia in one of these species are 



terrestris. e. Same with perianth laid ^left. The first three species have flowers resem^ 



open. /. The pistil. ^,j^^g ^-^^^ ^^^ ^j^^^^.^^ -^^ p.^^ ^^ ^^^ ^^ .^^ ^.j^-^j^ 



the staminodia (opposite the outer segments of the perianth) are not petaloid, but 

 resemble true stamens. Observe that the first species is distinguished by staminodia not 

 notched at the top as shown in the figure. The species in § Seuhertia resemble the first 

 three in general appearance, but the stamens and pistils are very diflferent, as is shown 

 by Fig. c. Observe that the stamens have versatile instead of basifixed anthei's; and the 

 ovary is upon a stipe, instead of being sessile. Douglas' Brodiaea, of Oregon, is like 

 Fig. c, only the base of the perianth is broader, the upper ro^^' of stamens hd^e broad 

 "bases, the stipe is shorter and the flowers are on short pedicels, so as to form a sub- 

 capitate umbel. The most common epecies of the third section is the \S'hite Brodiaea. 

 Fig. h shows a part of the flower. 



The middle figure on the next page represents a plant, the curious cup-like leaves of 

 which must have attracted your attention. The leaf cups are frequently much larger than 

 here shown, and borne upon stems a foot or more in height. Though tlie flow^ers are small» 



