▁spec im ens ▁has ▁several ▁hundred ▁se eds ▁grouped ▁closely ▁together ▁and ▁en closed ▁in ▁a ▁thick ▁matrix , ▁thought ▁to ▁be ▁the ▁preserved ▁jel ly ▁like ▁matrix ▁that ▁the ▁se eds ▁first ▁dispers ed ▁from ▁the ▁fruit ▁in . ▁ ▁Other ▁masses ▁show ▁less er ▁amounts ▁of ▁matrix , ▁and ▁the ▁ones ▁showing ▁little ▁to ▁no ▁matrix ▁are ▁less ▁grouped ▁together . ▁ ▁The ▁individual ▁se eds ▁range ▁between ▁ ▁long ▁with ▁an ▁o val ▁to ▁bar rel ▁shape ▁and ▁an ▁oper cul um ▁at ▁one ▁end . ▁ ▁Each ▁seed ▁has ▁a ▁distinct ▁rap he ▁r idge ▁running ▁vert ically ▁down ▁it ▁from ▁the ▁base ▁to ▁the ▁slightly ▁asym met rical ▁oper cul um . ▁ ▁While ▁most ▁of ▁the ▁seed ▁coat ▁structure ▁is ▁not ▁preserved ▁enough ▁to ▁identify , ▁the ▁outer ▁cell ▁layer ▁is ▁distinct , ▁showing ▁small ▁pent agon ▁sh aped ▁cells ▁with ▁straight ▁walls , ▁a ▁feature ▁seen ▁in ▁foss il ▁and ▁living ▁Nu ph ar . ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁Category : Y pres ian ▁plants ▁of ▁North ▁America ▁Category : Ext inct ▁fl ora ▁of ▁North ▁America ▁† ▁† ▁Category : F oss il ▁tax a ▁described ▁in ▁ 2 0 1 5 ▁Category : N ym pha e aceae ▁Category : Pl ants ▁described ▁in ▁ 2 0 1 5 ▁Category : P ale ont ology ▁in ▁Washington ▁( state ) ▁Category : P ale ont ology ▁in ▁Canada ▁Category : K l ond ike ▁Mountain ▁Form ation <0x0A> </s> ▁The ▁small ▁green