Adesmia (Adesmia), SUBG. ADESMIA SER. ADESMIA

Monteiro, Thiago Cobra E, Iganci, João Ricardo Vieira, Miotto, Silvia Teresinha Sfoggia, Simpson, Beryl B., Vatanparast, Mohammad, Lewis, Gwilym P., Klitgård, Bente B., Pezzini, Flávia Fonseca, Vargas, Oscar M. & Fortuna-Perez, Ana Paula, 2024, Towards a Monophyletic Infrageneric Circumscription of Adesmia DC. (Dalbergieae, Leguminosae): a Taxonomic Revision in Adesmia series Adesmia, Phytotaxa 639 (1), pp. 1-69 : 9-10

KEY TO THE SPECIES OF ADESMIA SUBG. ADESMIA SER. ADESMIA

1. Solitary axillary flowers in all axils, sometimes ending in a terminal raceme not exceeding 5 cm long. ....................................... 2

- Solitary axillary flowers absent or present only on the two leaves before the inflorescence. Inflorescence a terminal or axillary raceme or panicule, rarely shorter than 5 cm long. .......................................................................................................................... 4

2. Fruit a lomentum; individual articles triangular .......................................................................................... Adesmia securigerifolia

- Fruit a hemicraspedium; individual articles discoid or spherical ..................................................................................................... 3

3. Fruit articles orbicular; stipules 4–6 mm long. ................................................................................................. Adesmia bonariensis

- Fruit articles discoid; stipules 2.5–3.5 mm long. ................................................................................................... Adesmia smithiae

4. Stoloniferous decumbent and prostrate subshrubs, rarely ascendant, sometimes with adventitious roots from stem branch nodes .. ........................................................................................................................................................................................................... 5

- Ascendant to erect subshrubs or shrubs; never with adventitious roots from stem branch nodes ................................................. 13

5. Stems and inflorescence rachis glabrescent to glabrous, glandular trichomes rarely present .......................................................... 6

- Stems and inflorescence rachis pubescent to hirsute or pilose, glandular trichomes commonly abundant ..................................... 7

6. Fruits with lenticular articles, laterally flattened; pedicels erect when plant in fruit .............................................. Adesmia bicolor

- Fruits with spherical articles, not laterally flattened; pedicels reflexed when plant in fruit .................................. Adesmia globosa

7. Leaves 10 cm long or longer .................................................................................................................................. Adesmia latifolia

- LeaVes ˂ 10 cm long. ........................................................................................................................................................................ 8

8. Calyx lobes twice the calyx tube length; calyx equalling the corolla in length ............................................................................... 9

- Calyx lobes shorter, equaling or slightly longer than the calyx tube (never twice as long); calyx shorter than the corolla .......... 10

9. Plants glandular trichomes exceeding 1.5 mm in length; seeds with a thin aril ............................................. Adesmia subtropicalis

- Plants glandular trichomes shorter than 0.5 mm in length; seeds without an aril ................................................. Adesmia miottoae

10. Plant indumentum pilose, with glandular trichomes abundant on stems, leaves, calyces, and fruits ................... Adesmia punctata

- Plant indumentum incanous-pubescent, glandular trichomes scarce ............................................................................................. 11

11. Fruits muriculate, with adpressed thickened setules on each article .................................................................... Adesmia uruguaya

- Fruits pubescent, with erect setules, never thickened on each article ............................................................................................ 12

12. Fruit a lomentum; adventitious roots absent ............................................................................................................. Adesmia grisea

- Fruit a hemicraspedium; adventitious roots present ................................................................................................. Adesmia incana

13. Leaflets with a lobed margin, rarely only dentate in A. pimpinellifolia ......................................................................................... 14

- Leaflets with an entire margin ........................................................................................................................................................ 15

14. Leaflets strongly lobed, 1–3 mm wide; central Argentina....................................................................................... Adesmia gilliesii

- Leaflets slightly lobed, 3–8 mm wide; northern Argentina, Bolivia, and Peru........................................... Adesmia pimpinellifolia

15. Leaflets with apex retuse ............................................................................................................................... Adesmia riograndensis

- Leaflets with apex truncate, obtuse, acuminate, or acute ............................................................................................................... 16

16. Inflorescence a panicule; restricted to the province of Neuquén, Argentina................................................. Adesmia neuquenensis

- Inflorescence a raceme; and sometimes with axillary flowers ....................................................................................................... 17

17. Fruits with lenticular articles; restricted to Bolivian and Peruvian highlands ....................................................... Adesmia subnuda - Fruits with orbicular or discoid articles; occurring exclusively in the Pampas grasslands and Patagonian steppes ...................... 18

18. Flowers> 9 mm long, or if exactly 9 mm then the standard petal strongly reflexed ..................................................................... 19

- Flowers ˂ 9 mm long, or if exactlY 9 mm, then the standard petal erect or slightlY reflexed ........................................................ 20

19. Flowers> 14 mm long; standard petal slightlY reflexed; fruit articles 2.5–3× 2.5–3 mm ................................ Adesmia grandiflora

- Flowers ≤ 14 mm long; standard petal stronglY reflexed; fruit articles 3.5–4× 4–4.5 mm ................................. Adesmia retrofracta

20. Fruit a lomentum with 1–5 discoid articles, covered with an incanous-pubescent indumentum ..................... Adesmia cordobensis

- Fruit a hemicraspedium with 6–10 spherical muriculate articles ......................................................................... Adesmia muricata