Contains 14 accepted taxa overall.
Characteristics
Classification
Citation
UROCHLOA Palisot de Beauvois, Ess. Agrostogr. 52. 1812.
-
TYPE: Urochloa panicoides Palisot de Beauvois
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Urochloa adspersa | DOMINICAN SIGNALGRASS | Native | ||
| Urochloa arizonica | ARIZONA SIGNALGRASS | Not Native | ||
| Urochloa arrecta | TANNERGRASS | Not Native FAC (NWPL) | ||
| Urochloa brizantha | PALISADEGRASS | Not Native | ||
| Urochloa distachyos | TROPICAL SIGNALGRASS | Not Native UPL (NWPL) | ||
| Urochloa fusca var. reticulata | BROWNTOP SIGNALGRASS | Not Native FACU (NWPL) | ||
| Urochloa humidicola | KORONIVIA GRASS | Not Native | ||
| Urochloa maxima | GUINEAGRASS | Not Native FAC (NWPL) Y | ||
| Urochloa mutica | PARAGRASS | Not Native FACW (NWPL) Y FACW (DEP) | ||
| Urochloa piligera | HAIRY SIGNALGRASS; WATTLE SIGNALGRASS | Not Native | ||
| Urochloa plantaginea | CREEPING SIGNALGRASS; PLANTAIN SIGNALGRASS | Not Native FAC (NWPL) | ||
| Urochloa platyphylla | BROADLEAF SIGNALGRASS | Native FAC (NWPL) | ||
| Urochloa ramosa | BROWNTOP MILLET; DIXIE SIGNALGRASS | Not Native FACU (NWPL) | ||
| Urochloa texana | TEXAS SIGNALGRASS; TEXAS MILLET | Not Native |
Identification Key
1. Lowest node of inflorescence with 4-11 whorled or fascicled branches
1. Lowest node of inflorescence with 1(-2) branches
2
2. Most spikelets solitary; inflorescence branches usually 7 or fewer
3
2. Some or most spikelets paired (except near the tips of branches); inflorescence branches usually 5 or more
9
3. Lower glume 5-7-veined; glumes scarcely separated by a rachilla <0.3 mm long
4
3. Lower glume 9-11-veined; glumes separated by a rachilla 0.3-0.5 mm long
5
4. Sheath and pedicels glabrate, or pedicel with 1-2 hairs; spikelets 1.4-1.7 mm wide
4. Sheath and pedicels usually pilose; spikelets 1.8-2.3 mm wide
5. Upper glume glabrate
6
5. Upper glume pubescent
7
6. Base of the blade subcordate, not clasping the stem; spikelets 3-4.5 mm long
6. Base of the blade cordate, clasping the stem; spikelets 4-6 mm long
7. Leaf blade and sheath glabrate; lower glume 3.3-5.3 mm long
7. Leaf blade and sheath pilose; lower glume 1.8-3.3 mm long
8
8. Internodes pilose, especially below the node; spikelets 4.4-4.8(-6) mm long
8. Internodes glabrate; spikelets 3.8-4.3(-4.9) mm long
9. Spikelets 4.8-6 mm long
9. Spikelets 2.-4.2 mm long
10
10. Inflorescence branches densely pilose, with papillose-based trichomes
10. Inflorescence branches glabrous to sparsely pilose, hairs not or rarely papillose-based
11
11. Upper glume with conspicuous cross-venation throughout its length
11. Upper glume without cross-venation or only in the distal half of the glume
12
12. Plant usually sprawling, spreading and rooting at the lower nodes separated by elongate internodes; nodes often villous; primary inflorescence branches flat and winged to slightly triquetrous
12. Plant cespitose, shortly sprawling, or occasionally sprawling with elongate internodes; nodes glabrous to pubescent; primary inflorescence branches triquetrous
13
13. Leaf blade edge smooth to faintly scabrous; spikelets abruptly acuminate at the apex
13. Leaf blade edge scabrous; spikelets shortly-mucronate or shortly-apiculate at the apex
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|