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Smilax

Smilax pulverulenta Michx. was reported from RI by Angelo and Boufford (2000). The voucher was misidentified and is S. herbacea—20 Jun 1882, Leland s.n. ( NEBC!). Reference: Holmes (2002).

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S. herbacea
1a. Plants vines (i.e., stems herbaceous), without prickles [Fig. 305]; ovules 2 (rarely 1)  per locule
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1b. Plants lianas (i.e., stems woody), with prickles, especially toward the base; ovule 1  per locule
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  S. glauca
  2a. Leaf blades glaucous on the abaxial surface; anthers longer than filaments
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  2b. Leaf blades not glaucous; anthers equal to or shorter than filaments
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    S. hispida
    3a. Prickles thin, bristly, nearly black at maturity; peduncle 1.5–6.5 cm long; berry  not glaucous
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    S. rotundifolia
    3b. Prickles stout, green with red to dark brown tips at maturity; peduncle 0.5–1.5 cm long; berry glaucous

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