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Taiwan Gramineae | Family List

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KEY TO THE SUBFAMILIES

1 Culms woody, perennial; blade-base articulating from the sheath, ussually petiolate   subfam. 6. Bambusoideae
+ Culms herbaceous, annual or perennial and not woody; blade-base not articulating from the sheath.   (2)
       
2 (1) Spikelets of one to many florets, if bearing two florets then the lower floret usually perfect; spikelets terete or laterally compressed, breaking up at maturity above the more or less persistent glumes   (3)
+ Spikelets of two florets (1 floret in Sphaerocaryum), the lower staminate or neutral, the upper mostly perfect, fertile; spikelets usually dorsally compressed, falling of entirely together with glumes at maturity; length of embryo more than 1/3 as long as the spikelet   subfam. 5. Panicoideae
       
3 (2) Glumes usually wanting or inconspicuous; palea odd-nerved, if 2-nerved, then linear or enclosed in a sac-like lemma   subfam. 1. Oryzoideae
+ Glumes distinct; paleas 2-keeled or inconspicuous nerved   (4)
       
4 (3) Lemmas 5- to many-nerved; blade-base devoid of long hairs; length of embryo less than 1/4 as long as the caryopsis; lodicules acute or acuminate, nerveless   subfam. 3. Festucoideae
+ Lemmas 1- to 3-nerved, or nearly nerveless; blade-base ususally with long hairs, length of embryo more than 1/3 as long as the caryopsis; lodicules truncate, nerved.   (5)
       
5 (4) Lemmas distinctly nerved; spikelets nearly terete, laterally compressed; usually a tall reed   subfam. 2. Arundinoideae
+ Lemmas faintly nerved; spikelets compressed; small to medium sized grasses   subfam. 4. Eragrostioideae

List of Keys

  • List of lower taxa


     

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