▁leaf - bl ades ▁are ▁flat , ▁ ▁wide ▁and ▁have ▁a ▁sc ab er ul ous ▁surface . ▁The ▁memb rane ▁is ▁trunc ate ▁just ▁like ▁the ▁leaf - she ath s ▁but ▁is ▁ec ili ated ▁and ▁ ▁long . ▁The ▁pan icle ▁is ▁open , ▁linear , ▁sec und , ▁ ▁long ▁and ▁carry ▁some ▁sp ike lets . ▁The ▁main ▁branches ▁carry ▁ 1 – 5 ▁fert ile ▁sp ike lets ▁and ▁are ▁sc ab er ul ous . ▁ ▁S pi ke lets ▁are ▁ob long , ▁solit ary , ▁are ▁ ▁long ▁and ▁have ▁fert ile ▁sp ike lets ▁that ▁are ▁ped ice led . ▁The ▁p edic els ▁are ▁pub es cent ▁and ▁hair y ▁above . ▁The ▁sp ike lets ▁have ▁ 2 - 3 ▁fert ile ▁flor ets ▁which ▁are ▁dimin ished ▁at ▁the ▁a pe x ▁while ▁the ▁ster ile ▁flor ets ▁are ▁bar ren , ▁c une ate , ▁and ▁cl ump ed . ▁Both ▁the ▁upper ▁and ▁lower ▁gl umes ▁are ▁elli ptic , ▁ke ell ess , ▁memb ran ous ▁and ▁have ▁ac ute ▁a pe xes . ▁Their ▁size ▁and ▁ve ines ▁are ▁different ▁though ; ▁Lower ▁gl ume ▁is ▁ ▁long ▁with ▁the ▁leaf ▁ve ins ▁being ▁ 3 – 5 ▁while ▁the ▁upper ▁one ▁is ▁ ▁long ▁and ▁is ▁ 5 – 9 ▁ve ined . ▁ ▁The ▁species ' ▁lemma ▁have ▁sc ab r ous ▁surface ▁and ▁em argin ated ▁a pe x . ▁Its ▁fert