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Key to Tectaria

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1 Leaf blades 5-12 cm long; areoles without free included veinlets (rarely with).
  2 Pinnae 1-8 pairs, often with proliferous buds in the axils; petiole 0.5-1× as long as the leaf blade, pubescent above and below; indusia attached at the sinus
  2 Pinnae 0-1 (-2) pairs, lacking proliferous buds in the axils; petioles 1-3× as long as the leaf blade, pubescent above only; indusia peltate
1 Leaf blades 15-20 cm long; areoles with free included veinlets.
    3 Indusia peltate; pinnae cordate at the base; rachis and midvein pubescent above only
    3 Indusia attached at the sinus; pinnae oblique at the base; rachis and midvein pubescent above and below