Microstegium
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publication ID |
https://doi.org/10.3767/000651912X658908 |
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persistent identifier |
https://treatment.plazi.org/id/896687F3-2672-FF91-FD73-FA4F85EC0E2A |
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treatment provided by |
Felipe |
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scientific name |
Microstegium |
| status |
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KEY TO THE TAXA OF MICROSTEGIUM View in CoL
1. Pedicel margins glabrous........................ 2
1. Pedicel margins ciliate........................... 4
2. Culm-nodes glabrous; inflorescence a solitary raceme; lower florets absent; upper lemma awn geniculate; upper palea absent............................. 6. M. falconeri View in CoL
2. Culm-nodes pubescent; inflorescence of digitate racemes; lower florets present; upper lemma awn flexuous; upper palea present.................................. 3
3. Leaf-blade surface glabrous.... 8a. M. fauriei var. fauriei View in CoL
3. Leaf-blade surface tomentose............................................ 8b. M. fauriei var. geniculatum View in CoL
4. Lower glume surface pilose....................... 5
4. Lower glume surface glabrous.................... 6
5. Pedicels linear; both the sessile and pedicelled spikelets well-developed; sessile spikelet upper glume apex muticous................................. 4. M. dispar View in CoL
5 Pedicels clavate; pedicelled spikelets obviously reduced; sessile spikelet upper glume apex awned... 13. M. stapfii View in CoL
6. Rachis internodes linear......................... 7
6. Rachis internodes pyriform...................... 14
7. Ligule a ciliolate membrane; upper glume lanceolate.................................... 14. M. steenisii View in CoL
7. Ligule an eciliate membrane; upper glume elliptic..... 8
8. Leaf-blade base with a pseudopetiole... 10. M. petiolare View in CoL
8. Leaf-blade base without a pseudopetiole........... 9
9. Culms decumbent; awns geniculate... 16. M. vimineum View in CoL
9. Culms rambling.............................. 10
10. Rachis internode as long as the lower spikelet......................................... 9. M. glabratum View in CoL
10. Rachis internode obviously shorter than the lower spikelet........................................ 11
11. Upper lemma awn without a column, flexuous...... 12
11. Upper lemma awn with a twisted column, geniculate. 13
12. Culms of moderate stature; leaf blades linear, 5–10 by 0.8–1.5 cm; lower glume apex obtuse; upper palea present............................ 1. M. biaristatum View in CoL
12. Culms robust; leaf blades narrowly lanceolate, 10–15 by 1.5–2.5 cm; lower glume apex acute; upper palea absent............................12. M. spectabile View in CoL
13. Spikelets 2–2.5 mm long; upper palea absent or minute............................... 3. M. delicatulum View in CoL
13. Spikelets 2.5–4.5 mm long; upper palea present.....................................7. M. fasciculatum View in CoL
14. Inflorescence a single raceme.......... 2. M. brandisii View in CoL
14. Inflorescence composed of digitate racemes....... 15
15. Ligule a fringe of hairs; pedicels pyriform 5. M. eucnemis View in CoL
15. Ligule an eciliate membrane; pedicels clavate...... 16
16. Leaf-sheaths outer margin hairy; upper glume apex muticous; anthers 3...................11. M. rufispicum View in CoL
16. Leaf-sheaths outer margin glabrous; upper glume apex awned; anthers 1..................... 15. M. tenue View in CoL
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