( It ( ( is ( ( ( called ( ( running ( buffalo clover ) ) ( because ( it ( produces ( ( runners ( -LRB- ( i.e. ( , ( stolons -RRB- ) ) ) ) ) ( that ( extend ( from ( ( the base ) ( of ( erect stems ) ) ) ) ) ) ) ) ) ) ) ) and ) ( run ( along ( ( the surface ) ( of ( the ground ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (VP (VP (VBN called) (S (VP (VBG running) (NP (JJ buffalo) (NN clover)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ produces) (NP (NP (NNS runners)) (PRN (-LRB- -LRB-) (FW i.e.) (, ,) (ADJP (JJ stolons)) (-RRB- -RRB-)) (SBAR (WHNP (WDT that)) (S (VP (VBP extend) (PP (IN from) (NP (NP (DT the) (NN base)) (PP (IN of) (NP (JJ erect) (NNS stems))))))))))))))) (CC and) (VP (VBN run) (PP (IN along) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (DT the) (NN ground)))))))) (. .)))
It is called running buffalo clover because it          produces runners (i.e., stolons) that extend from the base of erect          stems and run along the surface of the ground.
(ROOT (S (S (NP (DT Some) (NNS plants)) (VP (VP (VBP have) (NP (NNS stolons))) (, ,) (CC or) (VP (VBZ stems)))) (, ,) (NP (DT that)) (VP (VP (VBP run) (PRT (RP along)) (NP (DT the) (NN ground))) (CC and) (VP (VBP are) (ADVP (RB commonly)) (VP (VBN called) (NP (NNS runners))))) (. .)))