TABLE OF SPECIES AND VARIETIES. 51 



b. uliginosa. Fronds (fertile) bipixmate at the base, 

 pinnules oblong, acute. 



6. L. spinulosa, Presl. Fronds linear, bipinnate, with 



spinulose serratures, scales ovate. 



7. L. dilatata, Presl. Fronds oblong- or ovate-lan- 



ceolate, bi-tri-pinnate, with spinulose serratures, 

 scales lanceolate. Plate IX. fig. 2. 

 b. collina. Pinnules ovate, blunt, bluntly mucro- 

 nate-serrate. 



8. L. fo3nisecii, Watson. Fronds triangular, bipinnate, 



pinnules concave above. 



V. POLYSTICHUM, Roth. 



1. P. Lonchitis, Roth. Fronds pinnate. Plate IV. 



fig. 2. 



2. P. aculeatum, Roth. Frond bipinnate, pinnules 



acutely wedge-shaped at the base. 

 b. lobatum. Fronds narrower, pinnules nearly all 

 decurrent. Plate IV. fig. 3. 



3. P. angulare, Newman. Fronds bipinnate, pinnules 



obtusely angled at the base, stalked. PI. V. fig. 2. 

 b. subtripinnatum. Pinnules pinnatifid. 

 vi. CYSTOPTEEIS, Bernhardi. 



1. C. fragilis, Bernhardi. Fronds lanceolate, bipin- 



