Markea, Richard, 1792

Orejuela, Andrés, Orozco, Clara Inés & Barboza, Gloria, 2014, Three new species of Markea (Solanaceae, Juanulloeae) from Colombia, Phytotaxa 167 (2), pp. 151-165 : 163-164

publication ID	https://doi.org/ 10.11646/phytotaxa.167.2.1
persistent identifier	https://treatment.plazi.org/id/039687A5-FFE0-F572-FF07-AF85FA7BFC1A
treatment provided by	Felipe
scientific name	Markea
status

Treatment

Key to Markea View in CoL

We present an updated key that includes all the currently recognized species in Markea and the changes documented since the last revision of the genus done by Hunziker (1997); these changes include the alternative circumscription published by Knapp et al. (1997) and the new species described since then ( Knapp 1998; Rodríguez 2006; Stehmann & Giacomin, 2012). The key is based on original descriptions, herbaria specimens, and field observations. Most of the species of the genus are represented by live photographs ( Fig. 4 View FIGURE 4 , 5 View FIGURE 5 ).

1. Corolla up to 3 cm long. Filaments always shorter than the anthers, anthers connivent, thecae confluent at apex...........................2

- Corolla longer than 4 cm. Filaments longer or as long as the anthers, non connivent, thecae not confluent at apex........................6

2. Calyx and stigma 3-lobed. Central Colombia (Western and Central Cordilleras). ........................................ M. hunzikeri View in CoL ( Fig. 1 View FIGURE 1 , 2 View FIGURE 2 )

- Calyx and stigma 5-lobed...................................................................................................................................................................3

3. Plants conspicuously pubescent with bifurcate or trifurcate trichomes. Corolla hypocrateriform. Northern Peru (Amazon region). ......................................................................................................................................................................................... M. vasquezii View in CoL

- Plants apparently glabrous or glabrescent, indument when present only of simple trichomes. Corolla tubular-campanulate ..........4

4. Inflorescence medium pedunculate, peduncle 6–10 cm long, axis thin, poorly lignified, nodes absent, deciduous at fruiting. Inflorescence few flowered (no more than four), distributed along the axis; bracts linear, foliose, up to 3 cm long. Southern and central Colombia (Western and Central Cordilleras) .......................................................................................... M. sturmii View in CoL ( Fig. 5B View FIGURE 5 )

- Inflorescence sessile, with short pedunculate, less than 5 cm long, axis thick, woody, conspicuously nodose and tuberculate, with perennial elongation. Inflorescence multiflowered (with more than four flowers at the apex); bracts triangular, non foliose, ca. 1 mm long..............................................................................................................................................................................................5

5. Filament glabrous at the base. Northern Colombia and Panama.................................................................. M. panamensis View in CoL ( Fig. 5A View FIGURE 5 )

- Filament with abundant, simple and uniseriate trichomes at the base. Bolivia, Brazil, Colombia, Guyana, Peru, Suriname, Venezuela (Amazon basin). ........................................................................................................................................................ M. ulei View in CoL ( Fig. 5C View FIGURE 5 )

6. Inflorescence length more than 20 cm long .......................................................................................................................................7

- Inflorescence length lesser than 12 cm .............................................................................................................................................10

7. Leaves glabrous, chartaceous. Corolla hypocrateriform, red-orange, 4–7 cm long. Bolivia, Brazil, Colombia, French Guiana, Peru, Suriname (Guiana Shield and Amazon basin).................................................................................................. M. coccinea View in CoL ( Fig. 4B View FIGURE 4 )

- Leaves pubescent, membranaceous. Corolla infundibuliform or tubular-campanulate, orange, cream or yellowish green with purple tinges, 9–12 cm long...........................................................................................................................................................................8

8. Anthers included. Central Ecuador (Eastern Cordillera)....................................................................................................... M.epifita View in CoL

- Anthers partially to completely exerted .............................................................................................................................................9

9. Corolla tubular-campanulate, yellowish green with conspicuous reticulum of both adaxially and abaxially. Anthers completely exerted. Fruit 2-locular. Colombia (Central Cordillera).................................................................................. M. huilensis View in CoL ( Fig. 6 View FIGURE 6 , 7 View FIGURE 7 )

- Corolla infundibuliform, orange, with reticulum of purple veins adaxially at the base of the corolla tube. Anthers partially included. Fruit visually 4-locular. Colombia (Western and Central Cordilleras)................................................................. M. lopezii View in CoL ( Fig. 4F View FIGURE 4 )

10. Calyx length usually exceeding the midpoint of the corolla length in flower anthesis. Apex of the calyx lobes usually acute or obtuse ...............................................................................................................................................................................................11

- Calyx length usually less than the midpoint of the corolla length in flower anthesis. Apex of the calyx lobes acuminate to largely acuminate......................................................................................................................................................................................... 14

11. Leaf blades coriaceous, margin revolute. Indument with abundant branched trichomes. Ovary 4-locular. Southern Ecuador.......... .......................................................................................................................................................................... M. fosbergii View in CoL ( Fig. 4D View FIGURE 4 )

- Leaf blades membranaceous, margin flat. Indument with simple trichomes. Ovary 2- locular ......................................................12

12. Inflorescence glabrous, usually 1-flowered, the bracts absent. Ecuador (Western Cordillera)...................................... M. spruceana View in CoL

- Inflorescence hairy, usually 4 or more flowered, the bracts stipule-like and conspicuous. .............................................................13

13. Indument densely pilose on the whole plant. Southwestern Colombia and northwestern Ecuador...................... M. pilosa View in CoL ( Fig. 4G View FIGURE 4 )

- Indument sparsely present to glabrescent. Colombia (Western Cordillera) ............................................... M. antioquensis ( Fig. 4A View FIGURE 4 )

14. Flowers sessile or sub-sessile ...........................................................................................................................................................15

- Flowers pedicellate...........................................................................................................................................................................16

15. Leaf blades coriaceous, dark brown when dry in herbarium material, margin revolute. Axillary inflorescence. Brazil, Guyana, Surinam, Venezuela....................................................................................................................................... M. sessiliflora View in CoL ( Fig. 4I View FIGURE 4 )

- Leaf blades membranaceous, light brown when dry in herbarium material, margin flat. Extra-axillary inflorescence. Southwestern Colombia (Western Cordillera) ....................................................................................................................... M. purpurea View in CoL ( Fig. 8 View FIGURE 8 , 9 View FIGURE 9 )

16. Inflorescence with 1 to 5 flowers ....................................................................................................................................................17

- Inflorescence with 8 to 20 flowers ..................................................................................................................................................19

17. Corolla campanulate. Filaments adnate at ca. 10 mm from the base of the corolla tube. Eastern Brazil........................ M. atlantica View in CoL

- Corolla infundibuliform. Filaments adnate at 25–40 mm from the base of the corolla tube ...........................................................18

18. Indument with simple trichomes; margin of leaf blade ciliate. Apexes of the corolla lobes obtuse or rounded. Colombia, Brazil, Peru (Amazon basin) .................................................................................................................................. M. formicarum View in CoL ( Fig. 4C View FIGURE 4 )

- Indument with branched trichomes; margin of leaf blade non-ciliate. Apexes of the corolla lobes acute. Eastern and Southeastern Colombia (Eastern Cordillera, low slopes and Amazon low lands)............................................................... M. plowmanii View in CoL ( Fig. 4H View FIGURE 4 )

19. Calyx lobes shortly acuminate. Narrow part of the corolla tube protruding from the calyx in flower anthesis. Bracts absent or inconspicuous. Lesser Antilles, Northern Brazil, French Guiana, Guyana and Venezuela.................................... M. longiflora View in CoL (4E)

- Calyx lobes largely acuminate. Narrow part of the corolla tube included in the calyx in flower anthesis. Bracts linear and conspicuous. Southern Colombia and Northern Ecuador (low slopes and Amazon low lands) ................................ M. harlingiana View in CoL