170 



POLYSTICHUM ANGULARE. 



inclies long, and one inch and three quarters wide at the 

 base. Pinnules exceedingly large; one inch long, and half 

 an inch wide at the base. The basal lobes stalked, the next 

 pair divided to the costa, the others deeply cut and crowded 

 or overlapping; the basal lobes remote from the other, and 

 the superior basal lobe twice the width of the others, and 

 distinctly auricled. Spinous. It will be unnecessary to give 

 an illustration of this form. 



^••mimiw>^¥a. 



Fig. 148.— Porlion of niiddle pitina. Basal pinna. 



OvATUM, Loioe. (Fig. 148.) — Found in Devonshire, by Mr. 

 Charles Elworthy, of Nettlecombe. A variety partaking some- 

 what of the characters of Ootusum and Prcemorsum. Length 

 of frond from thirty to forty inches, width in the widest part 

 eio-ht inches. The pinnce are opposite below and alternate 

 above, distant below and approximate above; the basal pinna? 

 are two inches below the next pair, and the second pair are 

 an. inch and a half below the third pair. The apices of the 

 pinnaj somewhat broad. The pinnules are very broad, with au 

 ovate auricle, especially near the base. In the lower pinme the 

 basal superior pinnules are pinnate, having at their base a pair 

 of oval segments, distinctly stalked, the pinnule not losing its 

 broad blunt character. From the middle of the frond upwards 



