Gene split models for 46 plant reference genomes based on the latest Gramene release 58 (Gramene58Ensembl93) are given below.  

The split gene models are commonly related to an annotation artifact where a single gene is annotated as two or more genes due to incomplete evidence, but could also result from legitimate evolutionary processes. The Compara Gene Tree method predicts a special class of within-species paralogs called contiguous gene split. 

A contiguous gene split is called when the two apparently paralogous genes lie on the same strand and in close proximity (<1MB) but have no (or little) overlapping sequence.

Here is brief statistics of contiguous gene split models for each species.

Species		Count_split_genes	
Arabidopsis_lyrata_subsp._lyrata	122
Arabidopsis_thaliana	33
Beta_vulgaris_subsp._vulgaris	66
Brachypodium_distachyon	71
Brassica_oleracea_var._oleracea	738
Brassica_rapa_subsp._pekinensis	152
Chlamydomonas_reinhardtii	44
Cucumis_sativus	507
Cyanidioschyzon_merolae_strain_10D	4
Daucus_carota_subsp._sativus	300
Dioscorea_rotundata	183
Glycine_max	743
Gossypium_raimondii	552
Helianthus_annuus	753
Hordeum_vulgare_subsp._vulgare	228
Leersia_perrieri	157
Lupinus_angustifolius	94
Manihot_esculenta	192
Medicago_truncatula	257
Musa_acuminata_subsp._malaccensis	924
Nicotiana_attenuata	84
Oryza_barthii	286
Oryza_brachyantha	206
Oryza_glaberrima	540
Oryza_glumipatula	274
Oryza_meridionalis	189
Oryza_nivara	244
Oryza_punctata	166
Oryza_rufipogon	263
Oryza_sativa_Indica_Group	723
Oryza_sativa_Japonica_Group	824
Ostreococcus_lucimarinus_CCE9901	17
Phaseolus_vulgaris	833
Physcomitrella_patens	74
Populus_trichocarpa	233
Prunus_persica	81
Setaria_italica	539
Solanum_lycopersicum	837
Solanum_tuberosum	458
Sorghum_bicolor	53
Theobroma_cacao	74
Trifolium_pratense	470
Triticum_aestivum	751
Vigna_angularis	251
Vitis_vinifera	495
Zea_mays	237