▁long ▁and ▁ ½   mm ▁( 0 . 0 2   in ) ▁wide , ▁and ▁the ▁inner ▁ 5   mm ▁long ▁and ▁ 1 . 2   mm ▁wide . ▁Near ▁Gra aff ▁Re inet , ▁the ▁sub species ▁occurs ▁without ▁ray ▁flor ets . ▁ ▁Fel icia ▁fil ifolia ▁sub sp . ▁sch ae fer i ▁is ▁a ▁low ▁plant ▁at ▁a ▁maximum ▁of ▁. ▁The ▁succ ul ent ▁leaves ▁are ▁crow ded ▁along ▁the ▁stem ▁and ▁up ▁to ▁ 1 5   mm ▁long , ▁often ▁spread ▁forward ▁and ▁narrow ed ▁at ▁the ▁base . ▁The ▁heads ▁are ▁up ▁to ▁ 1 0   cm ▁long ▁st ems . ▁ ▁In ▁Fel icia ▁fil ifolia ▁sub sp . ▁sch le chter i ▁the ▁fl oral ▁heads ▁are ▁almost ▁exclus ively ▁on ▁ 2 – 1 0   cm ▁long ▁stal ks . ▁The ▁succ ul ent ▁leaves ▁are ▁round ▁in ▁cross ▁section , ▁and ▁longer ▁than ▁in ▁the ▁typical ▁sub species ▁at ▁ 1 . 8 – 4   cm , ▁on ▁average ▁ 2 ½ ▁cm , ▁and ▁are ▁typically ▁orient ed ▁up wards , ▁pressed ▁against ▁the ▁stem . ▁ ▁Fel icia ▁fil ifolia ▁is ▁a ▁dip lo id ▁having ▁nine ▁sets ▁of ▁hom olog ous ▁chrom os om es ▁( 2 n = 1 8 ). ▁ ▁D iffer ences ▁between ▁the ▁sub species ▁ ▁Although ▁inter medi ates ▁between ▁sub sp . ▁fil ifolia ▁and ▁each ▁of ▁the ▁other ▁three ▁sub species , ▁and