Jacquemontia, Choisy, 1834

Pastore, Mayara, Moreira, André Luiz C., Morais, Isa Lucia De, Romeiro, Luiza A. & Simão-Bianchini, Rosângela, 2025, Jacquemontia verae (Convolvulaceae): a new species from Brazilian savannas, Phytotaxa 701 (1), pp. 56-68 : 63-64

Key to species of Jacquemontia from the state of Goiás

1. Inflorescence lax, monochasial or thyrsoid........................................................................................................................................2

1. Inflorescence congested, dichasial, corymbiform, umbelliform, glomeruliform or spiciform ..........................................................6

2. Pedunculate glandular trichomes absent ............................................................................................................................................3

2. Pedunculate glandular trichomes on branchlets, leaves and inflorescence ........................................................................................4

3. Sepals elliptical to oblong with truncate base; corolla completely white ............................................................................ J. gracilis

3. Sepals suborbiculate with cordate base; corolla white with tube internally vinaceous................................................... J. gracillima

4. Leaf venation brochidodromous, base often cordate; peduncle 3–6 cm long .............................................................. J. evolvuloides 4. Leaf venation craspedodromous or eucamptodromous, base rounded to cuneate; peduncle 0.1–2 cm long.....................................5

5. Erect or ascending subshrub; leaf venation craspedodromous; trichomes 3-rayed, stellate and pedunculate-glandular..................... ...................................................................................................................................................................................... J. heterotricha

5. Decumbent herb; leaf venation eucamptodromous; trichomes forked or simple and pedunculate-glandular ................ J. warmingii

6. Twining climbers; leaves often with cordate base .............................................................................................................................7

6. Erect or ascending subshrubs; leaves often with cuneate, rounded to truncate base .......................................................................11

7. Inflorescence glomeruliform, subsessile; corolla white; stigma filiform.......................................................................... J. nodiflora

7. Inflorescence corymbiform to umbelliform, peduncle 2–12 cm long; corolla lilac to blue; stigma ellipsoid ...................................8

8. Pedunculate-glandular trichomes on branchlets and inflorescence; outer sepals lanceolate, hirsute......................... J. sphaerostima

8. Pedunculate-glandular trichomes absent; outer sepals ovate, rhombic to obovate, pubescent to glabrous .......................................9

9. Sepals unequal, the outer longer than the inner, rhombic with acuminate apex .............................................................. J. densiflora

9. Sepals equal to subequal, ovate to obovate with rounded to obtuse apex........................................................................................10

10. Inflorescence umbelliform; sepals glabrous, margin ciliate............................................................................................. J. blanchetii

10. Inflorescence corymbiform; sepals velutinous.................................................................................................................... J. velutina

11. Leaf venation craspedodromous; corolla lilac to blue, rotate to infundibuliform with tube 4–9 mm long......................................12

11. Leaf venation brochidodromous; corolla white, infundibuliform with tube 15–25 mm long..........................................................13

12. Branchlets and leaves tomentose, trichomes 3-rayed, stellate; base of the leaves subcordate to truncate; inflorescence pedunculate, dichasial................................................................................................................................................................................... J. verae

12. Branchlets and leaves hirsute; trichomes forked; base of the leaves cuneate, inflorescence sessile, glomeruliform. J. villosissima

13. Inflorescence spiciform; sepals glabrous with rounded to obtuse apex ............................................................................ J. spiciflora

13. Inflorescence glomeruliform; sepals pubescent with acuminate to acute apex................................................................................14

14. Bracteoles 10–20 mm long; midpetaline bands glabrous except at the apex ......................................................... J. sphaerocephala

14. Bracteoles 1–5 mm long; midpetaline bands sericeous........................................................................................................... J. fusca