Gene split models for 47 plant reference genomes based on the latest Gramene release 59 (Gramene59Ensembl94) 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	Counts_ptative_split_genes
Arabidopsis_lyrata_subsp._lyrata	69
Arabidopsis_thaliana	21
Beta_vulgaris_subsp._vulgaris	47
Brachypodium_distachyon	47
Brassica_oleracea_var._oleracea	563
Brassica_rapa_subsp._pekinensis	78
Chlamydomonas_reinhardtii	38
Cucumis_sativus	396
Daucus_carota_subsp._sativus	197
Dioscorea_rotundata	171
Glycine_max	516
Gossypium_raimondii	322
Helianthus_annuus	442
Hordeum_vulgare_subsp._vulgare	118
Leersia_perrieri	68
Lupinus_angustifolius	64
Manihot_esculenta	112
Medicago_truncatula	176
Musa_acuminata_subsp._malaccensis	591
Nicotiana_attenuata	46
Oryza_barthii	85
Oryza_brachyantha	138
Oryza_glaberrima	191
Oryza_glumipatula	140
Oryza_meridionalis	72
Oryza_nivara	92
Oryza_punctata	76
Oryza_rufipogon	68
Oryza_sativa_Indica_Group	282
Oryza_sativa_Japonica_Group	286
Ostreococcus_lucimarinus_CCE9901	8
Phaseolus_vulgaris	534
Physcomitrella_patens	36
Populus_trichocarpa	141
Prunus_persica	62
Setaria_italica	342
Solanum_lycopersicum	531
Solanum_tuberosum	246
Sorghum_bicolor	29
Theobroma_cacao	34
Trifolium_pratense	385
Triticum_aestivum	412
Triticum_dicoccoides	629
Vigna_angularis	191
Vigna_radiata_var._radiata	40
Vitis_vinifera	336
Zea_mays	152