| Stipa tenacissima | | a | |
| Stipa spp. | | a | |
| Stipa aliena Keng | | a | |
| Stipa arabica Trin. & Rupr. | | a | |
| Stipa araxensis Grossh. | | a | |
| Stipa aristella L. | Achnatherum bromoides (L.) P. Beauv. | | |
| Stipa avenacea L. | Piptochaetium avenaceum (L.) Parodi | | |
| Stipa avenacioides Nash | | a | |
| Stipa baicalensis Roshev. | | a | |
| Stipa barbata Desf. | | a | i |
| Stipa bavioensis Speg. | Nassella philippii (Steud.) Barkworth | | |
| Stipa bicolor Vahl | Piptochaetium bicolor (Vahl) E. Desv. | | |
| Stipa bloomeri Bol. | Achnatherum bloomeri (Bol.) Barkworth | | |
| Stipa brachychaeta Godr. | Amelichloa brachychaeta (Godr.) Arriaga & Barkworth | | |
| Stipa brachyphylla Hitchc. | Nassella brachyphylla (Hitchc.) Barkworth | | |
| Stipa brandisii Mez | Achnatherum brandisii (Mez) Z. L. Wu | | |
| Stipa brevipes E. Desv. | Amelichloa brevipes (E. Desv.) Arriaga & Barkworth | | |
| Stipa bromoides (L.) Dorfl. | Achnatherum bromoides (L.) P. Beauv. | | |
| Stipa bungeana Trin. | | a | |
| Stipa calamagrostis (L.) Wahlenb. | Achnatherum calamagrostis (L.) P. Beauv. | | |
| Stipa californica Merr. & Burtt Davy | Achnatherum occidentale (Thurb.) Barkworth subsp. californicum (Merr. & Burtt Davy) Barkworth | | |
| Stipa capensis Thunb. | | a | |
| Stipa capillacea Keng | | a | |
| Stipa capillaris Lam. | Muhlenbergia capillaris (Lam.) Trin. | | |
| Stipa capillata L. | | a | |
| Stipa caragana Trin. | Achnatherum caragana (Trin.) Nevski | | |
| Stipa caucasica Schmalh. | | a | |
| Stipa caucasica Schmalh. subsp. caucasica | | a | i |
| Stipa caucasica Schmalh. subsp. desertorum (Roshev.) Tzvelev | | a | i |
| Stipa caudata Trin. | Amelichloa caudata (Trin.) Arriaga & Barkworth | | |
| Stipa cernua Stebbins & A. Love | Nassella cernua (Stebbins & A. Love) Barkworth | | |
| Stipa charruana Arechav. | Nassella charruana (Arechav.) Barkworth | | |
| Stipa chrysophylla E. Desv. | Stipa humilis Brot. | | |
| Stipa chubutensis Speg. | | a | |
| Stipa clandestina Hack. | Amelichloa clandestina (Hack.) Arriaga & Barkworth | | |
| Stipa clarazii Ball | | a | |
| Stipa columbiana auct. | Achnatherum nelsonii (Scribn.) Barkworth subsp. dorei (Barkworth & J. Maze) Barkworth | | |
| Stipa columbiana Macoun var. nelsonii (Scribn.) H. St. John | Achnatherum nelsonii (Scribn.) Barkworth subsp. nelsonii | | i |
| Stipa comata Trin. & Rupr. | Hesperostipa comata (Trin. & Rupr.) Barkworth subsp. comata | | |
| Stipa comata Trin. & Rupr. var. intermedia Scribn. & Tweedy | Hesperostipa comata (Trin. & Rupr.) Barkworth subsp. intermedia (Scribn. & Tweedy) Barkworth | | i |
| Stipa coronata var. depauperata | | a | i |
| Stipa curamalalensis Speg. | Nassella curamalalensis (Speg.) Barkworth | | |
| Stipa dasyphylla (Lindem.) Czern. ex Trautv. | | a | |
| Stipa densiflora Hughes | Austrostipa densiflora (Hughes) S. W. L. Jacobs & J. Everett | | |
| Stipa desertorum (Roshev.) Ikonn. | Stipa caucasica Schmalh. subsp. desertorum (Roshev.) Tzvelev | | |
| Stipa diegoensis Swallen | Achnatherum diegoense (Swallen) Barkworth | | |
| Stipa dregeana Steud. | | a | |
| Stipa duthiei Hook. f. | Achnatherum duthiei (Hook. f.) P. C. Kuo & S. L. Lu | | i |
| Stipa elegantissima Labill. | Austrostipa elegantissima (Labill.) S. W. L. Jacobs & J. Everett | | |
| Stipa eminens Cav. | Achnatherum eminens (Cav.) Barkworth | | |
| Stipa eriocaulis Borbas | Stipa pennata L. subsp. eriocaulis (Borbas) Martinovsky & Skalicky | | |
| Stipa eriostachya Kunth | | a | |
| Stipa falcata Hughes | Austrostipa scabra (Lindl.) S. W. L. Jacobs & J. Everett subsp. falcata (Hughes) S. W. L. Jacobs & J. Everett | | |
| Stipa filiculmis Delile | Nassella filiculmis (Delile) Barkworth | | |
| Stipa fimbriata Kunth | Piptochaetium fimbriatum (Kunth) Hitchc. | | |
| Stipa fontanesii Parl. | Stipa holosericea Trin. & Rupr. subsp. fontanesii (Parl.) Tzvelev | | |
| Stipa formicarum Delile | Nassella formicarum (Delile) Barkworth | | |
| Stipa gigantea Link | Celtica gigantea (Link) F. M. Vazquez & Barkworth | | |
| Stipa giganteum | | a | |
| Stipa glareosa P. A. Smirn. | | a | |
| Stipa grandis P. A. Smirn. | | a | |
| Stipa gynerioides Phil. | Stipa eriostachya Kunth | | |
| Stipa haussknechtii Boiss. | | a | |
| Stipa hirtiflora Hack. | | a | |
| Stipa hohenackeriana Trin. & Rupr. | | a | |
| Stipa holosericea Trin. & Rupr. | | a | |
| Stipa holosericea Trin. & Rupr. subsp. fontanesii (Parl.) Tzvelev | | a | i |
| Stipa holosericea Trin. & Rupr. subsp. holosericea | | a | i |
| Stipa humilis Brot. | | a | |
| Stipa hyalina Nees | Nassella hyalina (Nees) Barkworth | | |
| Stipa hymenoides Roem. & Schult. | Achnatherum hymenoides (Roem. & Schult.) Barkworth | | |
| Stipa hypogona Hack. | Piptochaetium napostaense (Speg.) Hack. | | |
| Stipa ibari Phil. | | a | |
| Stipa ichu (Ruiz & Pav.) Kunth | Jarava ichu Ruiz & Pav. | | |
| Stipa inebrians Hance | Achnatherum inebrians (Hance) Keng | | |
| Stipa jacquemontii Jaub. & Spach | Achnatherum jacquemontii (Jaub. & Spach) P. C. Kuo & S. L. Lu | | |
| Stipa joannis Celak. | | a | |
| Stipa joannis Celak. var. puberula Podp. & Suza | | a | i |
| Stipa juergensii Hack. | Nassella juergensii (Hack.) Barkworth | | |
| Stipa juncea auct. | Stipa offneri Breistr. | | |
| Stipa juncoides Speg. | | a | |
| Stipa kirghisorum P. A. Smirn. | | a | |
| Stipa krylovii Roshev. | | a | |
| Stipa lagasca | | a | |
| Stipa lagascae Roem. & Schult. | | a | |
| Stipa lemmonii (Vasey) Scribn. | Achnatherum lemmonii (Vasey) Barkworth | | |
| Stipa lepida Hitchc. | Nassella lepida (Hitchc.) Barkworth | | |
| Stipa lessingiana Trin. & Rupr. | | a | |
| Stipa lettermanii Vasey | Achnatherum lettermanii (Vasey) Barkworth | | |
| Stipa leucotricha Trin. & Rupr. | Nassella leucotricha (Trin. & Rupr.) R. W. Pohl | | |
| Stipa longiglumis Phil. | Nassella longiglumis (Phil.) Barkworth | | |
| Stipa megapotamica Spreng. ex Trin. | Nassella megapotamica (Spreng. ex Trin.) Barkworth | | |
| Stipa melanosperma J. Presl | Nassella melanosperma (J. Presl) Barkworth | | |
| Stipa melanosperma J. Presl var. erythrina Hack. | Nassella melanosperma (J. Presl) Barkworth | | i |
| Stipa membranacea L. | Vulpia membranacea (L.) Dumort. | | |
| Stipa mongholica Turcz. ex Trin. | Ptilagrostis mongholica (Turcz. ex Trin.) Griseb. subsp. mongholica | | |
| Stipa mucronata Kunth | Nassella mucronata (Kunth) R. W. Pohl | | |
| Stipa namaquensis Pilg. | | a | |
| Stipa neaei Nees | | a | |
| Stipa neesiana Trin. & Rupr. | Nassella neesiana (Trin. & Rupr.) Barkworth | | |
| Stipa nelsonii Scribn. | Achnatherum nelsonii (Scribn.) Barkworth subsp. nelsonii | | |
| Stipa nelsonii Scribn. subsp. dorei Barkworth & J. Maze | Achnatherum nelsonii (Scribn.) Barkworth subsp. dorei (Barkworth & J. Maze) Barkworth | | i |
| Stipa nelsonii Scribn. subsp. nelsonii | Achnatherum nelsonii (Scribn.) Barkworth subsp. nelsonii | | i |
| Stipa neomexicana (Thurb.) Scribn. | Hesperostipa neomexicana (Thurb.) Barkworth | | |
| Stipa nevadensis B. L. Johnson | Achnatherum nevadense (B. L. Johnson) Barkworth | | |
| Stipa nitida Summerh. & C. E. Hubb. | Austrostipa nitida (Summerh. & C. E. Hubb.) S. W. L. Jacobs & J. Everett | | |
| Stipa nutans Hack. | Nassella nutans (Hack.) Barkworth | | |
| Stipa occidentalis Thurb. ex S. Watson | Achnatherum occidentale (Thurb. ex S. Watson) Barkworth subsp. occidentale | | |
| Stipa offneri Breistr. | | a | |
| Stipa orientalis Trin. | | a | |
| Stipa papposa Nees | Jarava plumosa (Spreng.) S. W. L. Jacobs & J. Everett | | |
| Stipa parviflora Desf. | | a | i |
| Stipa patagonica Speg. | | a | |
| Stipa pekinense Hance | Achnatherum pekinense (Hance) Ohwi | | |
| Stipa pennata auct. nonn. | Stipa joannis Celak. | | |
| Stipa pennata L. | | a | |
| Stipa pennata L. subsp. eriocaulis (Borbas) Martinovsky & Skalicky | | a | i |
| Stipa pennata L. subsp. lessingiana (Trin. & Rupr.) K. Richt. | Stipa lessingiana Trin. & Rupr. | | i |
| Stipa pennata L. subsp. pennata | | a | i |
| Stipa pennata L. var. gallica Steven | Stipa pennata L. subsp. eriocaulis (Borbas) Martinovsky & Skalicky | | i |
| Stipa pennata L. var. neomexicana Thurb. | Hesperostipa neomexicana (Thurb.) Barkworth | | i |
| Stipa pennata L. var. stenophylla Czern. ex Lindem. | Stipa tirsa Steven | | i |
| Stipa philippii Steud. | Nassella philippii (Steud.) Barkworth | | |
| Stipa pontica P. A. Smirn. | | a | |
| Stipa porteri Rydb. | Ptilagrostis mongholica (Turcz. ex Trin.) Griseb. subsp. porteri (Rydb.) Barkworth | | |
| Stipa pringlei Scribn. var. lemmonii Vasey | Achnatherum lemmonii (Vasey) Barkworth | | i |
| Stipa przewalskyi Roshev. | | a | |
| Stipa psylantha Speg. | | a | |
| Stipa pubescens R. Br. | Austrostipa pubescens (R. Br.) S. W. L. Jacobs & J. Everett | | |
| Stipa pubiflora (Trin. & Rupr.) Munoz-Schick | Nassella pubiflora (Trin. & Rupr.) E. Desv. | | |
| Stipa pulcherrima K. Koch | | a | |
| Stipa pulcherrima K. Koch var. gallica (Steven) Podp. | Stipa pennata L. subsp. eriocaulis (Borbas) Martinovsky & Skalicky | | i |
| Stipa pulchra Hitchc. | Nassella pulchra (Hitchc.) Barkworth | | |
| Stipa redowskii Trin. | | a | |
| Stipa retorta (Nees) Mez | | a | |
| Stipa richardsonii Link | Achnatherum richardsonii (Link) Barkworth | | |
| Stipa richteriana Kar. & Kir. | | a | |
| Stipa roborowskyi Roshev. | | a | |
| Stipa robusta (Vasey) Scribn. | Achnatherum robustum (Vasey) Barkworth | | |
| Stipa rosengurttii Chase | Nassella rosengurtii (Chase) Barkworth | | |
| Stipa sareptana A. K. Becker | | a | |
| Stipa scabra Lindl. | Austrostipa scabra (Lindl.) S. W. L. Jacobs & J. Everett subsp. scabra | | |
| Stipa scribneri Vasey | Achnatherum scribneri (Vasey) Barkworth | | |
| Stipa semibarbata R. Br. | Austrostipa semibarbata (R. Br.) S. W. L. Jacobs & J. Everett | | |
| Stipa sericea Michx. | Muhlenbergia sericea (Michx.) P. M. Peterson | | |
| Stipa setigera J. Presl | Nassella mucronata (Kunth) R. W. Pohl | | |
| Stipa sibirica (L.) Lam. | Achnatherum sibiricum (L.) Keng ex Tzvelev | | |
| Stipa sp | | a | |
| Stipa spartea Trin. | Hesperostipa spartea (Trin.) Barkworth | | |
| Stipa speciosa Trin. & Rupr. | Achnatherum speciosum (Trin. & Rupr.) Barkworth | | |
| Stipa spicata L. f. | Trachypogon spicatus (L. f.) Kuntze | | i |
| Stipa splendens Trin. | Achnatherum splendens (Trin.) Nevski | | |
| Stipa stenophylla (Czern. ex Lindem.) Trautv. | Stipa tirsa Steven | | |
| Stipa szovitziana Trin. & Rupr. | Stipa arabica Trin. & Rupr. | | |
| Stipa tenacissian | | a | |
| Stipa tenacissima | | a | |
| Stipa tenacissima Loefl. ex L. | Macrochloa tenacissima (Loefl. ex L.) Kunth | | |
| Stipa tenuis Phil. | Nassella tenuis (Phil.) Barkworth | | |
| Stipa tenuissima Trin. | Nassella tenuissima (Trin.) Barkworth | | |
| Stipa thurberiana Piper | Achnatherum thurberianum (Piper) Barkworth | | |
| Stipa tirsa Steven | | a | |
| Stipa torilis | | a | |
| Stipa tortilis Desf. | Stipa capensis Thunb. | | i |
| Stipa trichotoma Nees | Nassella trichotoma (Nees) Hack. ex Arechav. | | |
| Stipa tuckeri F. Muell. | | a | |
| Stipa tucumana Parodi | Nassella tucumana (Parodi) Torres | | |
| Stipa ucrainica P. A. Smirn. | | a | |
| Stipa vaseyi Scribn. | Achnatherum robustum (Vasey) Barkworth | | |
| Stipa verruculosa Mez | Piptochaetium verruculosum (Mez) Henrard | | |
| Stipa viridula Trin. | Nassella viridula (Trin.) Barkworth | | |
| Stipa viridula Trin. var. robusta Vasey | Achnatherum robustum (Vasey) Barkworth | | i |
| Stipa zalesskii Wilensky ex Grossh. | | a | |