Juncus bufonius.en.wikipedia.org (Accessed 5/2014).

Juncus bufonius is an annual rush to 30 cm tall, tufted, often branched. 

Leaves alternate, from base and stem, thread-like, 0.5-10 cm long to 0.1 cm wide, lower surface rounded, upper surface flat or channeled. 

Flowers in clusters of 2-4, scattered along stems, above tiny membranous bracts 0.1-0.2 cm long, petals linear, 0.3-0.6 cm midrib green, margins membranous, slightly shorter than sepals; inflorescence a third or more of plant height. 

Fruit capsule about as long as sepals, June-Nov. 

Wetland status: FACW. 

Frequency in NYC: Infrequent. 

Origin: Native. 

Habitat: Wet to moist soil, open sites, soil pH 4.6-7.6, moderately tolerant of salt, intolerant of shade, fire, drought (USDA, NRCS 2010). 

Notes: Sometimes planted in wetland restorations.