▁results ▁is ▁a ▁condition ▁known ▁as ▁" sub oper cul ate ", ▁and ▁is ▁shared ▁with ▁Co oke ina ▁tr ich ol oma ▁and ▁Phill ips ia ▁dom ing ensis , ▁also ▁in ▁the ▁family ▁Sar cos cy ph aceae . ▁ ▁The ▁sp ores ▁are ▁sc ap ho id ▁( bo at - sh aped ), ▁and ▁have ▁dimensions ▁of ▁ 3 5 – 3 8 ▁by ▁ 1 2 – 1 4   µ m . ▁They ▁are ▁marked ▁with ▁prominent ▁longitud inal ▁gro ov es , ▁and ▁when ▁m ature , ▁are ▁ap ic ulate ▁( ending ▁ab rupt ly ▁in ▁a ▁short ▁point ). ▁The ▁sp ores ▁typically ▁contain ▁several ▁oil ▁dro ple ts . ▁The ▁par aph ys es ▁( ster ile ▁cells ▁inter sp ers ed ▁among ▁the ▁as ci ) ▁are ▁ 8 – 9   µ m ▁long ▁and ▁have ▁internal ▁partitions ▁called ▁sept a . ▁The ▁structure ▁of ▁the ▁sept a ▁has ▁been ▁investig ated ▁using ▁transmission ▁electron ▁micro sc opy , ▁which ▁has ▁revealed ▁that ▁W .   amer icana ▁has ▁a ▁single ▁p ore ▁plug ged ▁by ▁a ▁" fan - sh aped ▁matrix " — an ▁electron - den se ▁region ▁with ▁a ▁tor us - sh aped ▁ring ▁of ▁transl uc ent ▁t issue ▁wrapped ▁around ▁it . ▁The ▁p ore ▁plug ▁res emb les ▁those ▁found ▁in ▁the ▁Sar cos cy ph aceae ▁species ▁Sar cos cy pha ▁occident alis ▁and ▁Phill ips ia ▁dom ing ensis . ▁