Segment, the ultimate division of a frond, usually longer or deeper than 
a lobe. 
Sessile, sitting i. e. not stalked, 
Sori, the clusters of capsules. 
Spathulate, oblong, with the lower end attenuated like a spathula. 
Spicate, in the form of a spike i.e. a long stalk with sessile flowers or 
fruit. 
Squarrose, covered with bodies which spread at a right or obtuse angle. 
Stipes, the stem, or stalk which supports the frond. 
Subulate, awl-shaped, tapering to a fine point from a broad base. 
Tomentose, downy or woolly. 
Tufted, fronds growing in tufts from an upright rhizome. 
Venules, the first, and 
Veinlets, the second divisions or branches of the veins. 
Venation, mode of arrangement of the veins. 
Vernation, the manner in which leaves are arranged in the bud, circinate 
in all the Natal genera except Ophioglossum in which it is 
straight. 
