528 EXPLANATION OF PLATES. 



PLATE 125. Udora Canadensis (page 264). Fig. ]. whorl of leaves : fig. 2. perfect 

 flower : fig. 3. stigma : fig. 4. transverse section of the ovary : fig. h, 

 longitudinal 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 odontorhiz a (page 269). Fig. 1. front view of the flower : 



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



Corallorhiza multiflora (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. 



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

 < & 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 : fig. 4. longitudinal section of the seed, considerably 

 magnified. 



132. Heteranthera renieormis (page 313). Fig, 1. spathe natural size : fig. 



2. a flower : fig. 3. the same with 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 (Schollera) graminea (page 313). Fig. 1 . flower : fig, 



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

 all magnified. 



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, with the persistent style and 

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



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



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

 all magnified. 



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



magnified. 



138. Cyperus Grayi (page 342). Fig. 1. spikelet : fig.. 2. scale : fig. 3. portion 



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

 transverse section of the achenium : all magnified. 



139. Scirpus debilis (page 352). Fig. 1. a spike : fig. 2. scale : fig. 3. flower, 



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

 achenium : all magnified. 



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



both somewhat, magnified : fig. 3. flower, considerably magnified : fig. 4. 

 transverse section of the achenium. 



