( 348 ) 



EXPLANATION OF TAB. III. 



ScJeroiium gyrosum. Fig. 1. Plant, nat. size. a. Plants mag- 

 nified, one of them divided vertically. 



Delesscr/a tcncrrima. Fig. 2. Plant, nat. size. a. Portion of 

 the frond, h. Portion of the frond with fructification ; — 

 magnified. 



Zonaria rubra. Fig. 3. Plant, nat. size. r/. Portion of the frond 

 magnified. 



Tortilla Northiniia. Fig. 4. Plants, nat. size. a. A leaf. b. Cap- 

 sule ; — magnified. 



Bri/um elegans. Fig. 5. Plant, nat. size. a. Portion of one of 

 the innovations, b. A leaf. c. Capsule, d. Two of the 

 teeth of the outer peristome ; — magnified. 



Bri/um Doniannm Fig. 6. Plant, nat. size. a. Leaf. b. Por- 

 tion of the summit of a leaf. c. Capsule, d. Teeth of 

 the outer peristome, e. Teeth of the inner ditto ; — mag- 

 nified. 



Ihjimum Lcskea. Fig. 7- Plant, nat. size. a. Leaf. b. Peri- 

 cha^tial leaf. c. Capsule, d. Teeth of the outer peri- 

 stome, e. Teeth of the inner ditto ; — magnified. 



XIL Dt- 



