| Pennisetum alopecuroides (L.) Spreng. | Cenchrus purpurascens Thunb. | | | Pennisetum alopecuroides(L.) Spreng. | Cenchrus purpurascensThunb. |
| Pennisetum alopecuros Steud. | Cenchrus hohenackeri (Hochst. ex Steud.) Morrone | | | Pennisetum alopecurosSteud. | Cenchrus hohenackeri(Hochst. ex Steud.) Morrone |
| Pennisetum americanum (L.) Leeke | Cenchrus americanus (L.) Morrone | | | Pennisetum americanum(L.) Leeke | Cenchrus americanus(L.) Morrone |
| Pennisetum asperifolium auct. | Cenchrus setaceus (Forssk.) Morrone | | | Pennisetum asperifoliumauct. | Cenchrus setaceus(Forssk.) Morrone |
| Pennisetum bambusiforme (E. Fourn.) Hemsl. ex B. D. Jacks. | Cenchrus bambusiformis (E. Fourn.) Morrone | | | Pennisetum bambusiforme(E. Fourn.) Hemsl. ex B. D. Jacks. | Cenchrus bambusiformis(E. Fourn.) Morrone |
| Pennisetum basedowii Summerh. & C. E. Hubb. | Cenchrus basedowii (Summerh. & C. E. Hubb.) Morrone | | | Pennisetum basedowiiSummerh. & C. E. Hubb. | Cenchrus basedowii(Summerh. & C. E. Hubb.) Morrone |
| Pennisetum benthamii Steud. | Cenchrus purpureus (Schumach.) Morrone | | | Pennisetum benthamiiSteud. | Cenchrus purpureus(Schumach.) Morrone |
| Pennisetum cenchroides Rich. | Cenchrus ciliaris L. | | | Pennisetum cenchroidesRich. | Cenchrus ciliarisL. |
| Pennisetum chilense (E. Desv.) B. D. Jacks. ex R. E. Fr. | Cenchrus chilensis (E. Desv.) Morrone | | | Pennisetum chilense(E. Desv.) B. D. Jacks. ex R. E. Fr. | Cenchrus chilensis(E. Desv.) Morrone |
| Pennisetum ciliare (L.) Link | Cenchrus ciliaris L. | | | Pennisetum ciliare(L.) Link | Cenchrus ciliarisL. |
| Pennisetum clandestinum Hochst. ex Chiov. | Cenchrus clandestinus (Hochst. ex Chiov.) Morrone | | | Pennisetum clandestinumHochst. ex Chiov. | Cenchrus clandestinus(Hochst. ex Chiov.) Morrone |
| Pennisetum complanatum (Nees) Hemsl. | Cenchrus complanatus (Nees) Morrone | | | Pennisetum complanatum(Nees) Hemsl. | Cenchrus complanatus(Nees) Morrone |
| Pennisetum compressum R. Br. | Cenchrus purpurascens Thunb. | | | Pennisetum compressumR. Br. | Cenchrus purpurascensThunb. |
| Pennisetum dichotomum Delile | Cenchrus divisus (Forssk.) Verloove et al. | | | Pennisetum dichotomumDelile | Cenchrus divisus(Forssk.) Verloove et al. |
| Pennisetum distachyum (E. Fourn.) Rupr. ex Chase | Cenchrus distachyus (E. Fourn.) Morrone | | | Pennisetum distachyum(E. Fourn.) Rupr. ex Chase | Cenchrus distachyus(E. Fourn.) Morrone |
| Pennisetum divisum (J. F. Gmel.) Henrard | Cenchrus divisus (Forssk.) Verloove et al. | | | Pennisetum divisum(J. F. Gmel.) Henrard | Cenchrus divisus(Forssk.) Verloove et al. |
| Pennisetum durum Beal | Cenchrus durus (Beal) Morrone | | | Pennisetum durumBeal | Cenchrus durus(Beal) Morrone |
| Pennisetum flaccidum Griseb. | Cenchrus flaccidus (Griseb.) Morrone | | | Pennisetum flaccidumGriseb. | Cenchrus flaccidus(Griseb.) Morrone |
| Pennisetum frutescens Leeke | Cenchrus pilcomayensis (Mez) Morrone | | | Pennisetum frutescensLeeke | Cenchrus pilcomayensis(Mez) Morrone |
| Pennisetum glaucum (L.) R. Br. | Cenchrus americanus (L.) Morrone | | | Pennisetum glaucum(L.) R. Br. | Cenchrus americanus(L.) Morrone |
| Pennisetum hohenackeri Hochst. ex Steud. | Cenchrus hohenackeri (Hochst. ex Steud.) Morrone | | | Pennisetum hohenackeriHochst. ex Steud. | Cenchrus hohenackeri(Hochst. ex Steud.) Morrone |
| Pennisetum hordeiforme (Thunb.) Spreng. | Cenchrus purpurascens Thunb. | | | Pennisetum hordeiforme(Thunb.) Spreng. | Cenchrus purpurascensThunb. |
| Pennisetum hordeoides (Lam.) Steud. | Cenchrus hordeoides (Lam.) Morrone | | | Pennisetum hordeoides(Lam.) Steud. | Cenchrus hordeoides(Lam.) Morrone |
| Pennisetum incomptum Nees | Cenchrus ciliaris L. | | | Pennisetum incomptumNees | Cenchrus ciliarisL. |
| Pennisetum japonicum Trin. ex Spreng. | Cenchrus purpurascens Thunb. | | | Pennisetum japonicumTrin. ex Spreng. | Cenchrus purpurascensThunb. |
| Pennisetum latifolium Spreng. | Cenchrus latifolius (Spreng.) Morrone | | | Pennisetum latifoliumSpreng. | Cenchrus latifolius(Spreng.) Morrone |
| Pennisetum leonis Stapf & C. E. Hubb. | Cenchrus americanus (L.) Morrone | | | Pennisetum leonisStapf & C. E. Hubb. | Cenchrus americanus(L.) Morrone |
| Pennisetum ×longistylum Hochst. ex A. Rich. | Cenchrus ×longistylus (Hochst. ex A. Rich.) Thulin & S. M. Phillips | | | Pennisetum longistylumHochst. ex A. Rich. | Cenchrus longistylus(Hochst. ex A. Rich.) Thulin & S. M. Phillips |
| Pennisetum macrostachys (Brongn.) Trin. | Cenchrus elegans (Hassk.) Veldkamp | | | Pennisetum macrostachys(Brongn.) Trin. | Cenchrus elegans(Hassk.) Veldkamp |
| Pennisetum macrourum Trin. | Cenchrus caudatus (Schrad.) Kuntze | | | Pennisetum macrourumTrin. | Cenchrus caudatus(Schrad.) Kuntze |
| Pennisetum massaicum Stapf | Cenchrus massaicus (Stapf) Morrone | | | Pennisetum massaicumStapf | Cenchrus massaicus(Stapf) Morrone |
| Pennisetum merkeri Leeke | Cenchrus sphacelatus (Nees) Morrone | | | Pennisetum merkeriLeeke | Cenchrus sphacelatus(Nees) Morrone |
| Pennisetum natalense Stapf | Cenchrus caudatus (Schrad.) Kuntze | | | Pennisetum natalenseStapf | Cenchrus caudatus(Schrad.) Kuntze |
| Pennisetum nervosum (Nees) Trin. | Cenchrus nervosus (Nees) Kuntze | | | Pennisetum nervosum(Nees) Trin. | Cenchrus nervosus(Nees) Kuntze |
| Pennisetum nodiflorum Franch. | Cenchrus divisus (Forssk.) Verloove et al. | | | Pennisetum nodiflorumFranch. | Cenchrus divisus(Forssk.) Verloove et al. |
| Pennisetum occidentale Chase | Cenchrus occidentalis (Chase) Morrone | | | Pennisetum occidentaleChase | Cenchrus occidentalis(Chase) Morrone |
| Pennisetum orientale Rich. | Cenchrus orientalis (Rich.) Morrone | | | Pennisetum orientaleRich. | Cenchrus orientalis(Rich.) Morrone |
| Pennisetum orientale Rich. var. triflorum (Nees) Stapf | Cenchrus orientalis (Rich.) Morrone | | i | Pennisetum orientaleRich. var.triflorum (Nees) Stapf | Cenchrus orientalis(Rich.) Morrone |
| Pennisetum pedicellatum Trin. | Cenchrus pedicellatus (Trin.) Morrone | | | Pennisetum pedicellatumTrin. | Cenchrus pedicellatus(Trin.) Morrone |
| Pennisetum polystachion (L.) Schult. | Cenchrus polystachios (L.) Morrone subsp. polystachios | | | Pennisetum polystachion(L.) Schult. | Cenchrus polystachios(L.) Morrone subsp. polystachios |
| Pennisetum purpureum Schumach. | Cenchrus purpureus (Schumach.) Morrone | | | Pennisetum purpureumSchumach. | Cenchrus purpureus(Schumach.) Morrone |
| Pennisetum quartinianum A. Rich. | Cenchrus caudatus (Schrad.) Kuntze | | | Pennisetum quartinianumA. Rich. | Cenchrus caudatus(Schrad.) Kuntze |
| Pennisetum ramosum (Hochst.) Schweinf. & Asch. | Cenchrus ramosus (Hochst.) Morrone | | | Pennisetum ramosum(Hochst.) Schweinf. & Asch. | Cenchrus ramosus(Hochst.) Morrone |
| Pennisetum rueppelianum hort. ex Mez | Cenchrus setaceus (Forssk.) Morrone | | | Pennisetum rueppelianumhort. ex Mez | Cenchrus setaceus(Forssk.) Morrone |
| Pennisetum schimperi Hochst. ex A. Rich. | Cenchrus sphacelatus (Nees) Morrone | | | Pennisetum schimperiHochst. ex A. Rich. | Cenchrus sphacelatus(Nees) Morrone |
| Pennisetum setaceum (Forssk.) Chiov. | Cenchrus setaceus (Forssk.) Morrone | | | Pennisetum setaceum(Forssk.) Chiov. | Cenchrus setaceus(Forssk.) Morrone |
| Pennisetum setosum (Sw.) Rich. | Cenchrus polystachios (L.) Morrone | | | Pennisetum setosum(Sw.) Rich. | Cenchrus polystachios(L.) Morrone |
| Pennisetum sphacelatum (Nees) T. Durand & Schinz | Cenchrus sphacelatus (Nees) Morrone | | | Pennisetum sphacelatum(Nees) T. Durand & Schinz | Cenchrus sphacelatus(Nees) Morrone |
| Pennisetum squamulatum Fresen. | Cenchrus squamulatus (Fresen.) Morrone | | | Pennisetum squamulatumFresen. | Cenchrus squamulatus(Fresen.) Morrone |
| Pennisetum stramineum Peter | Cenchrus stramineus (Peter) Morrone | | | Pennisetum stramineumPeter | Cenchrus stramineus(Peter) Morrone |
| Pennisetum subangustum (Schumach.) Stapf & C. E. Hubb. | Cenchrus polystachios (L.) Morrone subsp. polystachios | | | Pennisetum subangustum(Schumach.) Stapf & C. E. Hubb. | Cenchrus polystachios(L.) Morrone subsp. polystachios |
| Pennisetum thunbergii Kunth | Cenchrus geniculatus Thunb. | | | Pennisetum thunbergiiKunth | Cenchrus geniculatusThunb. |
| Pennisetum trachyphyllum Pilg. | Cenchrus trachyphyllus (Pilg.) Morrone | | | Pennisetum trachyphyllumPilg. | Cenchrus trachyphyllus(Pilg.) Morrone |
| Pennisetum triflorum Nees | Cenchrus orientalis (Rich.) Morrone | | | Pennisetum triflorumNees | Cenchrus orientalis(Rich.) Morrone |
| Pennisetum typhoideum Rich. | Cenchrus americanus (L.) Morrone | | | Pennisetum typhoideumRich. | Cenchrus americanus(L.) Morrone |
| Pennisetum unisetum (Nees) Benth. | Cenchrus unisetus (Nees) Morrone | | | Pennisetum unisetum(Nees) Benth. | Cenchrus unisetus(Nees) Morrone |
| Pennisetum villosum R. Br. ex Fresen. | Cenchrus longisetus M. C. Johnst. | | | Pennisetum villosumR. Br. ex Fresen. | Cenchrus longisetusM. C. Johnst. |
| Pennisetum schweinfurthii Pilg. | | a | | Pennisetum schweinfurthiiPilg. | |
| Pennisetum spp. | Cenchrus spp. | | | Pennisetum spp. | Cenchrus spp. |
| Pennisetum typhoides (Burm. f.) Stapf & C. E. Hubb. | Cenchrus americanus (L.) Morrone | | | Pennisetum typhoides(Burm. f.) Stapf & C. E. Hubb. | Cenchrus americanus(L.) Morrone |
| Pennisetum mezianum Leeke | Cenchrus mezianus (Leeke) Morrone | | | Pennisetum mezianumLeeke | Cenchrus mezianus(Leeke) Morrone |
| Pennisetum violaceum (Lam.) Rich. | Cenchrus violaceus (Lam.) Morrone | | | Pennisetum violaceum(Lam.) Rich. | Cenchrus violaceus(Lam.) Morrone |
| Pennisetum americanum (L.) Leeke subsp. monodii (Maire) Brunken | Cenchrus violaceus (Lam.) Morrone | | i | Pennisetum americanum(L.) Leeke subsp. monodii (Maire) Brunken | Cenchrus violaceus(Lam.) Morrone |
| Pennisetum chudeaui Maire subsp. monodii Maire | Cenchrus violaceus (Lam.) Morrone | | i | Pennisetum chudeauiMaire subsp. monodii Maire | Cenchrus violaceus(Lam.) Morrone |
| Pennisetum polystachion (L.) Schult. subsp. atrichum (Stapf & C. E. Hubb.) Brunken | Cenchrus polystachios (L.) Morrone subsp. atrichus (Stapf & C. E. Hubb.) Morrone | | i | Pennisetum polystachion(L.) Schult. subsp. atrichum (Stapf & C. E. Hubb.) Brunken | Cenchrus polystachios(L.) Morrone subsp. atrichus (Stapf & C. E. Hubb.) Morrone |
| Pennisetum atrichum Stapf & C. E. Hubb. | Cenchrus polystachios (L.) Morrone subsp. atrichus (Stapf & C. E. Hubb.) Morrone | | | Pennisetum atrichumStapf & C. E. Hubb. | Cenchrus polystachios(L.) Morrone subsp. atrichus (Stapf & C. E. Hubb.) Morrone |
| Pennisetum lanatum Klotzsch | Cenchrus lanatus (Klotzsch) Morrone | | | Pennisetum lanatumKlotzsch | Cenchrus lanatus(Klotzsch) Morrone |
| Pennisetum sieberianum (Schltdl.) Stapf & C. E. Hubb. | Cenchrus sieberianus (Schltdl.) Verloove | | | Pennisetum sieberianum(Schltdl.) Stapf & C. E. Hubb. | Cenchrus sieberianus(Schltdl.) Verloove |
| Pennisetum americanum (L.) Leeke subsp. stenostachyum (Klotzsch ex Mull. Berol.) Brunken | Cenchrus sieberianus (Schltdl.) Verloove | | i | Pennisetum americanum(L.) Leeke subsp. stenostachyum (Klotzsch ex Mull. Berol.) Brunken | Cenchrus sieberianus(Schltdl.) Verloove |
| Pennisetum hybr. | Cenchrus hybr. | | | Pennisetum hybr. | Cenchrus hybr. |
| Pennisetum giganteum A. Rich. | Cenchrus caudatus (Schrad.) Kuntze | | | Pennisetum giganteumA. Rich. | Cenchrus caudatus(Schrad.) Kuntze |
| Pennisetum angolense Rendle | Cenchrus caudatus (Schrad.) Kuntze | | | Pennisetum angolenseRendle | Cenchrus caudatus(Schrad.) Kuntze |
| Pennisetum spicatum (L.) Korn. | Cenchrus americanus (L.) Morrone | | | Pennisetum spicatum(L.) Korn. | Cenchrus americanus(L.) Morrone |
| Pennisetum ruppelii Steud. | Cenchrus setaceus (Forssk.) Morrone | | | Pennisetum ruppeliiSteud. | Cenchrus setaceus(Forssk.) Morrone |
| Pennisetum polystachion (L.) Schult. subsp. setosum (Sw.) Brunken | Cenchrus polystachios (L.) Morrone | | i | Pennisetum polystachion(L.) Schult. subsp. setosum (Sw.) Brunken | Cenchrus polystachios(L.) Morrone |
| Pennisetum glaucum (L.) R. Br. subsp. violaceum (Lam.) van der Zon | Cenchrus violaceus (Lam.) Morrone | | i | Pennisetum glaucum(L.) R. Br. subsp. violaceum (Lam.) van der Zon | Cenchrus violaceus(Lam.) Morrone |
| Pennisetum glaucum (L.) R. Br. subsp. sieberianum (Schltdl.) van der Zon | Cenchrus sieberianus (Schltdl.) Verloove | | i | Pennisetum glaucum(L.) R. Br. subsp. sieberianum (Schltdl.) van der Zon | Cenchrus sieberianus(Schltdl.) Verloove |
| Pennisetum polystachion (L.) Schult. subsp. polystachion | Cenchrus polystachios (L.) Morrone subsp. polystachios | | i | Pennisetum polystachion(L.) Schult. subsp. polystachion | Cenchrus polystachios(L.) Morrone subsp. polystachios |
| Pennisetum petiolare (Hochst.) Chiov. | Cenchrus petiolaris (Hochst.) Morrone | | | Pennisetum petiolare(Hochst.) Chiov. | Cenchrus petiolaris(Hochst.) Morrone |
| Pennisetum setigerum (Vahl) Wipff | Cenchrus setigerus Vahl | | | Pennisetum setigerum(Vahl) Wipff | Cenchrus setigerusVahl |
| Pennisetum pennisetiforme (Hochst. & Steud.) Wipff | Cenchrus pennisetiformis Hochst. & Steud. | | | Pennisetum pennisetiforme(Hochst. & Steud.) Wipff | Cenchrus pennisetiformisHochst. & Steud. |
| Pennisetum prieurii Kunth | Cenchrus prieurii (Kunth) Maire | | | Pennisetum prieuriiKunth | Cenchrus prieurii(Kunth) Maire |
| Pennisetum advena Wipff & Veldkamp | Cenchrus advena (Wipff & Veldkamp) Morrone | | | Pennisetum advenaWipff & Veldkamp | Cenchrus advena(Wipff & Veldkamp) Morrone |
| Pennisetum pilcomayense Mez | Cenchrus pilcomayensis (Mez) Morrone | | | Pennisetum pilcomayenseMez | Cenchrus pilcomayensis(Mez) Morrone |
| Pennisetum mollissimum Hochst. | Cenchrus violaceus (Lam.) Morrone | | | Pennisetum mollissimumHochst. | Cenchrus violaceus(Lam.) Morrone |