PLATE XVI. 



Figs, i, a-i. Barbtda saimdersii. 



I, a. Entire plant, natural size. 



I, b. Leaf (X26). 



I, c. Apex of the same ( X 60). 



I, d. Part of a transverse section of the same ( X 100). 



I, e. Perichaetial leaf ( X 26). 



!,_/". Basal areolation of a stem-leaf ( X ISS)- 



I, g. Cells in the middle of the same ( X 270). 



I, //. Capsule and lid ( X 13)- 



1, /'. Capsule and peristome ( X 13)- 



2, a-n. Orthotrichmn fenestratum. 

 2, a. Entire plant, natural size. 

 2. b, b, b. Leaves ( X 13)- 



2, c. Transverse section of a leaf ( X 60). 



2, d. Transverse section of the costa ( X 270). 



2, e. Basal ai-eolation of a leaf ( X I35)' 



2,/. Areolation in the middle ( X I35)' 



2, g. Areolation of the apex ( X i35)' 



2, //. Capsule and lid ( X 13)' 



2, /. Calyptra ( X 13)- 



2, J. Capsule, deoperculate, in moist state ( X 13^- 



2, k. The same split lengthwise ( X 13)- 



2, /. A stomate ( X 135) • 



2, m. A tooth of the peristome ( X ^35)- 



2, ». Upper part of the same ( X 270). 



(354) 



