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 Cymbopogon

Poaceae

Cymbopogon

Copy permalink to share

1 Rachis internodes and pedicels densely white-villous (the hairs longer than and obscuring the spikelets, thus the spikelets appearing densely white-villous); leaf blades whitish, notably lemon-scented; keels of the lower glumes (of the sessile spikelets) not narrowly winged
1 Rachis internodes and pedicels variously ciliate or pilose but not densely white-villous (the hairs usually concentrated marginally and not longer than nor obscuring the spikelets); leaf blades green or greenish-white (sometimes glaucous); with a faint or generally lacking a notable lemon-scent smell; keels of the lower glumes (of the sessile spikelets) narrowly winged.
  2 Leaf sheaths reddish-purple at the base, not glaucous; pedicel margins pilose, the adaxial surfaces glabrous
  2 Leaf sheaths variously green or greenish-white, glaucous (C. citratus) or not (C. flexuosus); pedicel margins pilose, the adaxial surfaces also pilose.