Melastomataceae
|
publication ID |
https://doi.org/ 10.11646/phytotaxa.183.2.1 |
|
persistent identifier |
https://treatment.plazi.org/id/8A04314C-FF92-FFAE-FF50-F90EFA6AF7BA |
|
treatment provided by |
Felipe |
|
scientific name |
Melastomataceae |
| status |
|
Key to species of Melastomataceae View in CoL on Marambaia
1. Ovary free inside the hypanthium or adnate to the hypanthium only at the base or by septa along the length, and free to the apex; fruit capsule (capsule loculicidal, ruptidium or velatidium) .............................................................................................................2.
- Ovary partial or completely inferior; fruit berry (baccaceous or bacidium) ................................................................................... 9.
2. Flower solitary, axillary; connective appendage thickened, and involving the base of the thecae; fruit capsule loculicidal ............. ................................................................................................................................................................................ Marcetia taxifolia View in CoL
- Inflorescences terminal; connective appendage ventral or dorsal, not thickened nor involving the base of the thecae; fruit ruptidium or velatidium .................................................................................................................................................................................... 3.
3. Leaves apparently glabrous, the indumentum glandular-punctate (trichomes inconspicuous); flower 4-merous; petals white and basally yellow; anthers yellow, and dorsally appendaged; ovary glabrous; seeds winged, linear to oblong ....... Huberia ovalifolia View in CoL
- Leaves sharply pilose, the indumentum of other types, no glandular-punctate; flower 5-merous; petals purple or lilac; anthers purple, lilac or rose-purple, and ventrally appendaged; ovary pilose; seeds not winged, cochlear ( Tibouchina View in CoL ) ........................... 4.
4. Branches slightly to sharply winged; filaments 1/2–2/3-superior glandular-villous ....................................................................... 5.
- Branches not winged; filaments basally glandular or glandular-pubescent, not villous ................................................................. 6.
5. Leaves with adaxial surface bullate and abaxial surface foveolate, the adaxial surface with strigose and strigulose trichomes basally many-branched, ............................................................................................................................................. Tibouchina estrellensis View in CoL
- Leaves with both surface plane, the adaxial surface with strigose and strigulose trichomes basally 1-2-branched ........................... ......................................................................................................................................................................... Tibouchina granulosa View in CoL
6. Capsule ruptidium type .................................................................................................................................................................... 7.
- Capsule velatidium type .................................................................................................................................................................. 8.
7. Leaf base obtuse to acute; hypanthium 5–11 mm long; anthers 11–17 mm long ................................. Tibouchina gaudichaudiana View in CoL
- Leaf base obtuse-cordate; hypanthium 3–5 mm long; anthers 4–6 mm long. .............................................. Tibouchina heteromalla View in CoL
8. Leaves with the adaxial surface with trichomes basally not thickened nor branched, the acrodromous marginal veins suprabasal; bracteoles 6.2–7.8 mm long; connective of antesepalous stamens 1,8– 2 mm prolonged bellow the thecae ...................................... ........................................................................................................................................................................ Tibouchina corymbosa View in CoL
- Leaves with the adaxial surface with trichomes basally thickened and 1-2-branched, the acrodromous marginal veins basal; bracteoles 12–13 mm long; connective of antesepalous stamens 3.8–4 mm prolonged bellow the thecae ........................................ ........................................................................................................................................................................ Tibouchina trichopoda View in CoL
9. Inflorescences axillary and/or pseudo-axillary, sometimes also terminal ..................................................................................... 10.
- Inflorescences terminal .................................................................................................................................................................. 12.
10. Floral buds and petals apex acute to acuminate ................................................................................................... Ossaea marginata View in CoL
- Floral buds apex obtuse to rounded; petals apex rounded to rounded-emarginate ( Clidemia ) … ................................................ 11.
11. Branches and abaxial surface of leaf blades with furfuraceous-stellulate trichomes; inner torus with an irregularly toothedfimbriated membranaceous ring; calyx internal lobes slightly denticulate or reduced to a membranaceous and sinuos ring ............ ...................................................................................................................................................................................... Clidemia hirta
- Branches and abaxial surface of leaf blades with stellate trichomes sharply pedicelate, not furfuraceous trichomes; inner torus sparsely glandular, sometimes glabrous; calyx internal lobes wide-ovate, apex rounded to truncate-emarginate ............................. .............................................................................................................................................................................. Clidemia urceolata
12. Floral buds and petals apex acute to acuminate ( Leandra ) ........................................................................................................... 13.
- Floral buds apex obtuse to rounded ( Miconia View in CoL ) .............................................................................................................................. 16.
13. Thyrsoids of scorpioid cymes; anthers yellow ........................................................................................................ Leandra reversa
- Thyrsoids with no branchlets of scorpyoid cymes; anthers white or white-rosy .......................................................................... 14.
14. Bracts and bracteoles involucral, broadly ovate, apex rounded .................................................................. Leandra melastomoides
- Bracts and bracteoles not involucral, triangular, apex acuminate ................................................................................................. 15.
15. Plants apparently glabrous, indumentum furfuraceous-stellulate, trichomes early-caducous; leaves domatia primary-axillary hairtuft in abaxial surface .......................................................................................................................................... Leandra acutiflora
- Plants sharply pilose, indumentum with dendritic and rough-setulose trichomes, persistent; leaves domatia absent ........................ ............................................................................................................................................................................... Leandra variabilis
16. Adults leaves sharply discolour, adaxial surface green, abaxial surface brownish, white-brownish and/or rufous, indumentum persistent, and covering densely and all the epidermic surface, sometimes moderate and partially ............................................ 17.
- Adults leaves green, concolour, subconcolour or discolour, abaxial surface glabrous or indumentum generally sparse, sometimes dense and covering partially the epidermic surface, trichomes persistent or caducous ................................................................ 22.
17. Inflorescences of scorpioid cymes ................................................................................................................................................. 18.
- Inflorescences with no branchlets of scorpioid cymes .................................................................................................................. 19.
18. Shrubs, sometimes treelets (2–4.5 m tall); indumentum of the leaves abaxial surface densely lanate, trichomes vermiform; thyrses pyramidal; fruit bacidium ....................................................................................................................................... Miconia albicans View in CoL
- Trees (9–17 m tall); indumentum of the leaves abaxial surface lepidote-stellate; thyrses oblong; fruit baccaceous .......................... .................................................................................................................................................................................. Miconia lepidota View in CoL
19. Branches indumentum with stellate and dendritic trichomes, no lepidote trichomes; calyx persistent; anthers yellow, becoming reddish to vinaceous, connective appendage latero-ventrally 2-lobed; fruit bacidium .................................... Miconia dodecandra View in CoL
- Branches indumentum lepidote-stellate or tomentosous-stellate, no dendritic trichomes; calyx caducous; anthers white, connective inappendaged or dorsal appendage calcarate; fruit baccaceous .................................................................................................... 20.
20. Thyrsoids of glomerules ...................................................................................................................................... Miconia chartacea View in CoL
- Thyrsoids with no branchlets of glomerules ................................................................................................................................. 21.
21. Leaf blade abaxial surface dense and completely covered by the indumentum, the epidermic surface not exposed; inner torus lepidote-stellate; ovary apex with stellulate trichomes .................................................................................. Miconia cubatanensis View in CoL
- Leaf blade abaxial surface moderate and partially covered by the indumentum, epidermic surface partially exposed; inner torus glabrous; ovary apex glabrous ........................................................................................................................... Miconia brasiliensis View in CoL
22. Branches nodes with interpetiolar pseudo-stipules, latelly caducous ......................................................... Miconia cinnamomifolia View in CoL
- Branches nodes without interpetiolar pseudo-stipules .................................................................................................................. 23.
23. Petioles 2.6–7.4 cm long; leaf blades 9.1–18 cm wide, base obtuse to rounded or subcordate; thyrsoids of glomerules .................. ............................................................................................................................................................................. Miconia calvescens View in CoL
- Petioles 0.5–2.4 cm long; leaf blades 1.9–8.7 cm wide, base acute, acute-decurrent or obtuse-cuneate; thyrsoids with no branchlets of glomerules ................................................................................................................................................................................. 24.
24. Leaf blade base acute; bracts and bracteoles caducous; calyx caducous; anthers pore ventral, very wide, and prolonged to the base as a longitudinal slit; fruit oligospermous (2–6 seeds) ....................................................................................... Miconia pusilliflora View in CoL
- Leaf blade base acute-decurrent or rounded-cuneate; bracts and bracteoles persistent; calyx persistent; anthers pore terminal, not prolonged to the base; fruit polyspermous (50–80 seeds) ....................................................................................... Miconia prasina View in CoL
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.