Victorian Plants. 



T1TCESIFTERIS, 



2133. Leaves comparatively large, placed vertically. 



Chiefly on stems of fern-trees ; stem branchless, from quite 

 short to rather long, often bending downward ; leaves 

 of thin texture, nearly transparent, from obovate- to 

 lanceolar-elliptical, flat, somewhat decurrent, without any 

 denticulation, inequilateral, often ending in a setule ; 

 their carinular venule very distinct ; segments of the 

 fruit-supporting leaves similar to the simple leaves, but 

 rather smaller, far extending beyond the fruit ; spore- 

 caselet formed by the concrescence of two or rarely three, 

 fixed to the sinus of the bracteal leaves, much broader 

 than long, somewhat indurating, soon pale-brownish, 

 opening vertically ; spores extremely minute. Figure 129. 



T. Tanneusis. 



FILICES. 



(Ferns.) 



OPKIOGZ.OSSUBX. 



2134. Frond placed far above the base of the stem, but at a 



distance also from the spike. 



Dwarf, sometimes quite minute ; frond near or below the 

 middle of the stem, firm, from lanceolate-linear to ovate, 

 sessile, flat ; spike narrow, somewhat pointed ; spore - 

 caselets from few to numerous, depressed -globular. 



(0. Lusitanicum.) O. vulgatum. 



BOTRirCHXUXK. 



2135. Sterile frond sessile, simply pinnate. 



Here alpine, always quite dwarf ; vernation folded but 

 straight ; sterile frond sessile about the middle of the 

 stem ; segments mostly flabellate-rhomboid or somewhat 

 crescent-shaped, often bluntly denticulated in front, 

 seldom incised or somewhat fruit-bearing ; fertile frond 

 simply or doubly pinnate, its segments unilaterally quite 

 occupied by the almost globular spore-caselets. 



B. Lunaria. 



Sterile frond long-stalked, ternately and pinnately 

 much divided. 



Rather dwarf ; primary divisions of the sterile frond often 

 almost deltoid in outline, repeatedly pinnate-dissected, 

 each short-stalked, firm throughout ; fertile frond also 

 on a long stalk, rhomboid or deltoid in contour, much 

 pinnately divided ; ultimate segments or lobes small, 

 mostly ovate and indented ; spore-caselets almost globular. 



B. ternatum. 



