inflorescence determinate thyrse inflorescence The higher order inflorescence axes (PO:0009081) of an determinate thyrse inflorescence may have either a monopodial or sympodial growth habit depending on whether single or paired inflorescence axillary meristems (PO:0009105) develop at each axis. Examples include lilacs (Syringia spp.; Oleaceae), buckeyes (Aesculus spp.; Hippocastanaceae) and hydrangea (Hydrangea paniculata; Hydrangeaceae). An inflorescence (PO:0009049) which at flowering stage (PO:0007616) is composed of a determinate, first order inflorescence axis (PO:0025104) and dichasial second order inflorescences with pedicellate flowers (PO:0009046) and determinate, higher order inflorescence axes (PO:0009081). thyrsoid (exact) dichasium (broad) determinate thyrse (exact) PO:0030128 plant_anatomy NYBG:Brandon_Sinn 2017-04-20T17:57:44Z thyrse (broad)