Son y chooid smoo, she tracheidjyn spohttagh ad ny h-ard-chillagyn ymmyrkey. Ta tracheagyn cochianglt myr cuishley liorish tuill; ta'n ushtey gleashaghey liorish gleashaght stoo‎ 'syn aght cheddin as ushtey ayns pioban, cha nel liorish skeaylley trooid yn 'ar-chrackan killag. Er lesh lus-oayllee, ta sylem mastey ny binn scanshoil lhig da haink lesh angiospermae.. Agh cha nee angiospermae ynrican s'oc tracheagyn, as cha nel y lheid ec shiartanse dy henn linneeaghtyn angiospermagh, myr sampleyr, Amborellaceae, Tetracentraceae, Trochodendraceae, as Winteraceae).