BRITISH FERNS. 
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Striated, scored or furrowed. 
Sub— prefixed, acts as a diminutive; incompletely, in a modified 
degree. 
Succulent, soft; sappy ; pulpy. 
Terete, square. 
Terminal, springing from the end of an organ. 
Ternate, three-branched or leaved at the same point. 
Theca, spore-case or vessel. 
Tomentose, cottony. 
Tortuous, twisting ; winding; crooked. 
Trapeziform, having four unequal sides. 
Tridentate, triply-toothed. 
Trifid, cleft into three. 
Tripinnate, having secondary branches themselves pinnate, or bearing 
on them lateral offshoots divided down to the stem. 
Truncate, lopped off abruptly. 
Tufted, clustered ; growing in bunches or swellings. 
Umbelliferous, where a number of stacks springing from one centre 
produce a round of flowerets above, umbrella-fashion. 
Unilateral, growing all on one side only. 
Urceolate, pitcher or vase-shaped. 
Vascular, consisting, or full of vessels. 
Veins, the fibres, nerves, or ribs of a leaf. 
Venation, mode of disposition or arrangement of the veins or nerves. 
Venules, smaller veins or fibres. 
Vernation, mode of growth of the young undeveloped frond. 
Winged, having a thinner, slighter border, running down the side. 
