▁deeply ▁inc ised ▁with ▁five ▁to ▁ten ▁teeth ▁near ▁the ▁tip , ▁and ▁the ▁lower , ▁merged ▁part ▁of ▁the ▁per ian th , ▁called ▁t ube , ▁is ▁somewhat ▁com pressed ▁side ways , ▁narrow ▁near ▁the ▁foot ▁but ▁somewhat ▁bul ging ▁higher ▁up . ▁L . ▁c une iform e ▁on ▁the ▁other ▁hand ▁has ▁narrow ▁to ▁broad ly ▁w edge - sh aped ▁leaves ▁ 0 . 6 – 3   cm ▁wide , ▁with ▁three ▁to ▁ten ▁teeth , ▁and ▁the ▁per ian th ▁t ube ▁cyl inder - sh aped ▁and ▁slightly ▁com pressed ▁side ways . ▁ ▁Tax onomy ▁ ▁As ▁far ▁as ▁known , ▁the ▁P ond ol and ▁p inc ush ion ▁was ▁first ▁collected ▁for ▁science ▁by ▁a ▁Mr . ▁William ▁T ys on ▁in ▁October ▁ 1 8 8 5 . ▁This ▁and ▁later ▁collected ▁plants ▁that ▁are ▁now ▁considered ▁to ▁belong ▁to ▁the ▁P ond ol and ▁p inc ush ion ▁were ▁initially ▁identified ▁as ▁L . ▁at ten u atum ▁R . Br . ▁( now ▁Le uc os perm um ▁c une iform e ). ▁In ▁ 1 9 7 0 , ▁John ▁Patrick ▁R our ke ▁decided ▁the ▁differences ▁with ▁L . ▁c une iform e ▁are ▁consistent , ▁and ▁he ▁described ▁it ▁as ▁a ▁new ▁species , ▁calling ▁it ▁Le uc os perm um ▁innov ans . ▁ ▁Le uc os perm um ▁innov ans ▁is ▁assigned ▁to ▁the ▁cyl ind ric ▁p inc ush ions , ▁section