Desmodium
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publication ID |
https://doi.org/ 10.11646/phytotaxa.169.1.1 |
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DOI |
https://doi.org/10.5281/zenodo.5154448 |
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persistent identifier |
https://treatment.plazi.org/id/537EF179-FF9B-4556-FF3B-2AD0FA50FB86 |
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treatment provided by |
Felipe |
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scientific name |
Desmodium |
| status |
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Key to species of Desmodium View in CoL occurring in Brazil
1. Leaves subtending inflorescence unifoliolate ........................................................................................................................ 2
– Leaves subtending inflorescence trifoliolate........................................................................................................................ 12
2. Prostrate, ascendent or decumbent subshrub, stems virgate .................................................................................................. 3
– Erect subshrub or shrub, stems not virgate ............................................................................................................................ 4
3. Stems tetragonal; fruit a craspedium ........................................................................................................ 8. D. craspediferum View in CoL
– Stems cylindrical; fruit a lomentum......................................................................................................... 19. D. microcarpum View in CoL
4. Inflorescence axis shorter than the adjacent leaves...................................................................................... 16. D. juruenense View in CoL
– Inflorescence axis longer than the adjacent leaves ................................................................................................................ 5
5. Stipules persistent at the base of the inflorescence; fruit articles tortuous............................................................................. 6
– Stipules caducous; articles not tortuous ................................................................................................................................. 7
6. Leaflets membranaceous; articles rhombic ......................................................................................... 18. D. membranifolium View in CoL
– Leaflets chartaceous, coriaceous, subcoriaceous or papyraceous; articles ovate-elliptic or orbicular .......... 10. D. distortum View in CoL
7. Loments with orbicular articles.............................................................................................................................................. 8
– Loments with elliptic or obovate-depressed articles ............................................................................................................ 10
8. Flowers up to 6 mm long, corolla purple or violet, ovary glabrous or puberulous................................. 25. D. sclerophyllum View in CoL
– Flowers more than 8 mm long, corolla lilac or pinkish; ovary tomentose or velutinous....................................................... 9
9. Leaflets up to 1 cm wide, linear or narrowly linear; articles with conspicuous veins .............................. 22. D. polygaloides View in CoL
– Leaflets more than 3.5 cm wide, elliptic, broadly ovate or ovate; articles with inconspicuous veins ..... 13. D. guaraniticum View in CoL
10. Leaflets ovate, broadly elliptic or orbicular, abaxial surface velutinous................................................... 4. D. arechavaletae View in CoL
– Leaflets elliptic, linearornarrowlylinear, abaxial surfacetomentoseor puberulous-uncinate ...........................................11
11. Tertiary veins prominent on the abaxial surface of the leaflets; pedicel 7–9 mm long; fruit stipe ca. 1 mm long; articles elliptic ............................................................................................................................................................... 20. D. pachyrhizum View in CoL
– Tertiary veins flush with the abaxial surface of the leaflets; pedicel up to 4 mm long; fruit stipe more than 3 mm long; articles obovate-depressed .............................................................................................................................. 21. D. platycarpum View in CoL
12. Terminal leaflet 3–6(– 9) mm long; inflorescesce fasciculate ........................................................................ 31. D. triflorum View in CoL
– Terminalleafletmorethan 1 cmlong (except insomespecimensof D. adscendens View in CoL : 0.5–3.2 cmlong); inflorescencepseudoracemose or paniculate ..................................................................................................................................................... 13
13. Stipules partially fused to each other ................................................................................................................................... 14
– Stipules free from each other ............................................................................................................................................... 15
14. Plant with stolons rooting at the nodes; flowers up to 3.5 mm long; fruit stipe more than 5 mm long............. 5. D. axillare View in CoL
– Plant without stolons rooting at the nodes; flowers more than 4.5 mm long; fruit stipe up to 2 mm long......15. D. incanum View in CoL
15. Inflorescence axis shorter than the adjacent leaves.......................................................................................... 6. D. barbatum View in CoL
– Inflorescence axis longer than the adjacent leaves .............................................................................................................. 16
16. Loment with tortuous articles............................................................................................................................................... 17
– Loment with articles otherwise (not tortuous) ..................................................................................................................... 22
17. Primary bracts persistent; seeds rhombic ................................................................................................... 23. D. procumbens View in CoL
– Primary bracts caducous; seeds oblong, elliptic or ovate .................................................................................................... 18
18. Stems sulcate; androecium diadelphous; loment with articles dimorphic ....................................................... 12. D. glabrum View in CoL
– Stems not sulcate; androecium monadelphous; loment with articles uniform..................................................................... 19
19. Stipules not amplexicaul; ovary stipe 2–3 mm long; articles rhombic .......................................................11. D. glabrescens View in CoL
– Stipules semi-amplexicaul; ovary stipe up to 1 mm long; articles ovate-elliptic or orbicular............................................. 20
16 • Phytotaxa 169 (1) © 2014 Magnolia Press
LIMA ET AL.
20. Ovary tomentose; loment stipe 2–3 mm long ........................................................................................................3. D. album
– Ovary glabrous or puberulous; loment stipe up to 1 mm long............................................................................................. 21
21. Auriculate stipules up to 1.5 mm long; pedicel more than 7 mm long ......................................................... 29. D. tortuosum
– Auriculate stipules more than 3 mm long; pedicel up to 5 mm long ............................................................. 10. D. distortum
22. Prostrate, ascending or decumbent (rarely erect) subshrub, stems virgate .......................................................................... 23
– Erect shrub, stems not virgate .............................................................................................................................................. 29
23. Leaflet venation craspedodromous ...................................................................................................................................... 24
– Leaflet venation brochidodromous or eucamptodromous.................................................................................................... 26
24. Stemssulcate; primarybractsmorethan 6 mm long; lomentwitharticlestriangularorsubtriangular ....28. D. subsericeum
– Stems striate; primary bracts up to 3 mm long; loment with articles oblong or obovate-depressed ................................... 25
25. Stipules persistent; loment 5–8-articulate .............................................................................................................. 2. D. affine
– Stipules caducous; loment 1–3-articulate..................................................................................................34. D. wydlerianum
26. Stipules caducous; flowers 8–12 mm long; androecium monadelphous ............................................................................. 27
– Stipules persistent; flowers 2.5–7 mm long; androecium diadelphous................................................................................ 28
27. Stems glabrescent or sparsely puberulous-uncinate; upper lip of calyx entire; loment 1–2-articulate.............. 24. D. riedelii
– Stems densely uncinate; upper lip of calyx bifid; loment 4–9-articulate......................................................32. D. uncinatum
28. Stipules auriculate; articles narrowly elliptic ............................................................................................... 26. D. scorpiurus
– Stipules not auriculate; articles oblong or rhombic; seeds reniform............................................................. 1. D. adscendens
29. Ovary puberulous or glabrous .............................................................................................................................................. 30
– Ovary tomentose or velutinous ............................................................................................................................................ 31
30. Vexillary stamen partially fused to the apex of the staminal tube; loment stipitate, stipe 2–3 mm long; articles orbicular ............................................................................................................................................... 27. D. subsecundum
– Vexillary stamen partially fused to the base of the staminal tube; loment stipitate, stipe 1–2 mm long; articles ellipitic................................................................................................................................................................ 17. D. leiocarpum
31. Stipules auriculate; loment with articles villous ...............................................................................................14. D. hassleri
– Stipules not auriculate; loment with articles not villous ...................................................................................................... 32
32. Stems glaucous; leaf rachis ca. 1 mm long ...................................................................................................... 9. D. cuneatum
– Stems not glaucous; leaf rachis more than 3 mm long......................................................................................................... 33
33. Stipules triangular; leaflets up to 2.8 cm long......................................................................................... 30. D. triarticulatum
– Stipules ovate; leaflets more than 3.4 cm long..................................................................................................................... 34
34. Infloresccence axillary and/or terminal; loment with the isthmus between articles margina .................... l7. D. cajanifolium
– Inflorescence always terminal; loment with the isthmus between articles central or subcentral ..................... 33. D. venosum
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