Key to Rhynchospora

View taxon page for Rhynchospora

(For a list of species in Rhynchospora, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Perianth barbs 

reflexed 

Abruptly bent or curved downward or backward.

; fruit ± smooth, base narrow-stalk-like

2. Perianth bristles 10–12; 

spikelets 

1. In Poaceae, one or more florets (each a flower with subtending lemma and generally palea) and generally 2 subtending glumes; in a sterile spikelet, the flower(s) and sometimes palea(s) are rudimentary or absent. 2. In Cyperaceae, the smallest aggregation of flowers (generally more than 2) and associated bracts.

pale-brown to ± white ..... R. alba

2' Perianth bristles 5–7; spikelets brown to dark brown ..... R. capitellata

1' Perianth barbs 

ascending 

Curving or angling upward from base, or about 30-60 degrees less than vertical or away from axis of attachment.

; fruit wrinkled, base wide-stalk-like or not stalk-like

3. Perianth bristles generally exceeding tubercle tip; fruit base wide-stalk-like ..... R. californica

3' Perianth bristles generally exceeded by tubercle base; fruit base not stalk-like ..... R. globularis

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