Contains 6 accepted taxa overall.
Characteristics
Classification
Citation
POA Linnaeus, Sp. Pl. 67. 1753.
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TYPE: Poa pratensis Linnaeus Lectotypified by Nash, in Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 1: 252. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Poa annua | ANNUAL BLUEGRASS | Not Native FACU (NWPL) | ||
| Poa arachnifera | TEXAS BLUEGRASS | Not Native | ||
| Poa autumnalis | AUTUMN BLUEGRASS | Native FAC (NWPL) | ||
| Poa chapmaniana | CHAPMAN'S BLUEGRASS | Native FAC (NWPL) | ||
| Poa pratensis | KENTUCKY BLUEGRASS | Not Native FACU (NWPL) | ||
| Poa sylvestris | WOODLAND BLUEGRASS | Native FACW (NWPL) |
Identification Key
1. Annual, 2-30(45) cm long; leaf blades 2-10 cm long, 1-3(6) mm wide; inflorescence 1-10 cm long; spikelets 2-5 mm long; anthers 0.6-1.1 mm long
2
1. Perennial, 5-120 cm long; leaf blades 1.5-25 cm long, 0.5-5 mm wide; inflorescence 2-20 cm long; spikelets 3-8.2 mm long, the calluses subtending the lemmas glabrous to densely villous; anthers 1-2.7 mm long
3
2. Calluses subtending the lemmas glabrous; anthers 3, 0.6-1.1 mm long
2. Calluses subtending the lemmas villous; anthers 1, 0.1-0.3 mm long
3. Rhizomatous
4
3. Cespitose
5
4. Dioecious; calluses subtending the lemmas glabrate (staminate plants) or villous (pistillate plants); anthers 1.6-2.7 mm long (or vestigial)
4. Monoecious; calluses subtending the lemmas villous; anthers 1-2 mm long
5. Inflorescence nodes mostly with 1-2(4) branhces; spikelets (3)5-8 mm long; calluses subtending the lemmas glabrous (rarely sparsely, short-villous)
5. Inflorescence nodes mostly with (2)3-10 branches; spikelets 2.5-4.4 mm long, calluses subtending the lemmas villous
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Arctopoa | Arctopoa (Grisebach) Probatova, Novosti Sist. Vyss. Rast. 8: 34. 1971. | BASIONYM: Glyceria R. Brown, sect. Arctopoa Grisebach, in Ledebour, Fl. Ross. 4: 392. 1852. | TYPE: Arctopoa eminens (J. Presl) Probatova (Poa eminens (J. Presl) |
| Dasypoa | Dasypoa Pilger, Bot. Jahrb. Syst. 25: 716. 1898. | TYPE: Dasypoa tenuis Pilger | |
| Ochlopoa | Ochlopoa (Ascherson & Graebner) H. Scholz, Ber. Inst. Landschafts-Pflanzenökologie Univ. Hohenheim 16: 58. 2003. | BASIONYM: Poa Linnaeus, sect. Ochlopoa Ascherson & Graebner, Syn. Mitteleur. Fl. 2: 387. 1900. | TYPE: Ochlopoa annua (Linnaeus) H. Scholz (Poa annua Linnaeus) |
| Paneion | Paneion Lunell, Amer. Midl. Naturalist 4: 221. 1915. | TYPE: = Poa Linnaeus 1753. | |
| Panicularia | Panicularia Heister ex Fabricius, Enum. 207. 1759. | TYPE: = Poa Linnaeus 1753. | |
| Parodiochloa | Parodiochloa C. E. Hubbard, in E. W. Groves, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 395. 1981. | TYPE: Parodiochloa flabellata (Lamarck) C. E. Hubbard (Festuca flabellata Lamarck) | |
| Poagris | Poagris Rafinesque, Fl. Tellur. 1: 18. 1837 ("1836"). | TYPE: = Poa Linnaeus 1753. |