Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Click images to enlarge and show more photo credit.

Key to Campyloneurum

Polypodiaceae

Campyloneurum

Copy permalink to share

1
Main lateral veins clearly visible on the upper leaf surface; leaves 5-8 (-12) cm wide; sori in 6-15 rows on each side of the midvein
  2
Secondary areoles in proximal half of blades asymmetrical, or primary areoles with distal veinlet irregularly curved; sori usually in 3 rows between main lateral veins
 ⇒ Campyloneurum brevifolium
  2
Secondary areoles in the proximal half of blades symmetrical; sori usually in 2 rows between main lateral veins
 ⇒ Campyloneurum phyllitidis
1
Main lateral veins obscure on the upper leaf surface; leaves 0.4-6 cm wide; sori in 1-6 (-10) rows on each side of the midvein.
  3
Sori in 4-8 rows on each side of the midvein; leaves 2.5-6 cm wide; petioles 4-15 cm long
 ⇒ Campyloneurum costatum
  3
Sori in 1-3 (-4) rows on each side of the midvein; leaves 0.5-1.5 cm wide; petioles 0-2 (-5) cm long
    4
Secondary areoles as long as broad; rhizome scales 1-2.5 mm wide, with slightly differentiated marginal cells
 ⇒ Campyloneurum amphostenon
    4
Secondary areoles two times longer than broad; rhizome scales 1-1.5 mm wide, without differentiated marginal cells
 ⇒ Campyloneurum angustifolium