528 EXPLANATION OF PLATES. 



PLATE 125. Udora Canadensis (page 264). Fig. 1. wliorl of leaves -.Jig. 2. perfect 

 flower : fig. 3. sligma : fig. 4. Iraiisverse section of the ovary : fig. 5. 

 loiigiludinal section of the ovary ; all magnified : fig. 6. an ovule, 

 showing primine and secundine : fig. 7. nucleus and part of the secundine: 

 fig. 8. part of the primine ; the last three highly magnified. 



126, CoRALLORHizA ODONTORHiZA (pige 269). Fj^. 1. front view of the flower : 



fig. 2. side view of the same ; both magnified. 



CoRALLORHizA MULTXFLORA (page 269). Fig. 1. front view of the flower ; 

 fig. 2. side view of the same : both magnified. 



127. Aplectrum hyemale (page 270) of the natural size, 



r 128. Spiranthes gracilis (page 282). The right hand figure. Fig. a. lip, 



} <Sc magnified. 



' 129. Spiranthes cernua (page 283) natural size. 



130. Smilacina racemosa (page 298) and a cluster of the fruit. 



131. PoNTEDERiA coRDATA (page 312). Fig. 1, spike of fruit : fig. 2. fruit 



magnified : fig. 3. transverse section of the same, showing the fertile and 

 two abortive cells : fiig. 4. longitudinal section of the seed, considerably 

 magnified. 



132. Heteranthera reniformis (page 313). Fig. 1. spaliie natural size :fig. 



2, a flower : fig. 3. the same wilh the perianth removed : fig. 4. capsule, 

 natural size : fig. 5. the same laid open and magnified : fig. 6. transverse 

 section of the capsule : fig. 7. seed, magnified, 



133. Heteranthera (Sciiollera) graminea (page 313). Fig. I. ^ower : fig. 



2. pistil : fiig. 3. transverse section of llie ovary : fig. 4. ovary laid open : 

 all magnihed. 



134. Melanthium Virginicum (page 316). Fig. a. capsule, natural size. 



135. Cyperus Nuttallii (page 339). Fig. 1. a spikelet : fig. 2. portion of the 



rachilla : fig. 3. a scale : fig. 4. caryopsis, wilh the persistent style and 

 stamens : fig. 5. transverse section of the caryopsis ; all magnified. 



136. Cypepus strigosus (page 340). Fig. 1. scale of the spikelet : fig. 2. 



aclienium : fig. 3. seed (the artist has improjjerly placed a style on this !) : 

 all magnified. 



137. Cyperus repens (page 341). Fig. 1. a spikelet : fig. 2. achenium : both 



magnified. 



138. Cyperus Grayi (page 342). Ftg-. 1. spikelet : _^^. 2. scale : Jzo^. 3. portion 



of the winged rachilla : fig. 4. achenium, stamens and style : fiig. 5, 

 transverse section of the achenium : all magnified. 



139. SciRPUs DEBiLi-i (page 352). Fig.l.a. spike : fiig. 2. scale : fig.Z. flower, 



with the scale reniovpd : fig. 4. style : fig. 5. transverse section of the 

 acheiuum : all magrufied. 



140. Eriopiiorum alpinum (page 357). Fig. 1. spike : fig. 2. separate flower, 



both soinevvliat maginficd : fig. 3 flower, considerably magnified : fig. 4 . 

 transverse section of the achenium. 



