Sentence:  Besides the aforementioned field study, in vitro uptake of triclosan, hydrocinnamic acid, tonalide, ibuprofen, naproxen and clofibric acid by lettuce ("Lactuca sativa L") and <WSD>spath</WSD> ("Spathiphyllum spp.") was investigated by the same research group [139] in order to evaluate the reuse of treated wastewater for irrigation of agricultural crops. 
Meaning of the word marked with <WSD> tags:  Any plant of the genus (genus); a (peace lily).