Urvillea

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Urvillea

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<<<Ovary>Style>Stigmatic branches>Stigmatic branch number

31
1. 009-002-001-001

<<Calyx>Disk>Androgynophore

receptacle enlarged into a short androgynophore2
2. 007-003-002

<<Calyx>Disk>Lobe number

4-lobed3
3. 007-003-001

<<Calyx>Petals>Appendages

with an adnate, hood-shaped appendage on adaxial surface4
4. 007-002-004

<<Calyx>Petals>Length

< 4 mm long5
5. 007-002-002

<<Calyx>Petals>Petal number

46
6. 007-002-001

<<Calyx>Petals>Shape

spatulate7
7. 007-002-003

<<Calyx>Sepals>Sepal number

58
8. 007-001-001

<<Ovary>Carpels>Carpel number

39
9. 009-001-001

<<Ovary>Carpels>Ovule number per carpel

uniovular10
10. 009-001-002

<<Ovary>Style>Stigmatic branches

with stigmatic branches11
11. 009-002-001

<<Seeds>Arillodes>Colour

white12
12. 011-003-002

<<Seeds>Arillodes>Shape

heart-shaped or reniform13
13. 011-003-001

<<Seeds>Embryo>Cotyledons

with the abaxial cotyledon bent over the biplicate adaxial cotyledon14
14. 011-004-001

<Calyx>Disk

disk unilateral, , .15
15. 007-003

<Calyx>Petals

petals , distinct, usually , , ;16
16. 007-002

<Calyx>Sepals

sepals17
17. 007-001

<Fruits>Shape

semi-inflated capsules, with narrow marginal wing18
18. 010-002

<Fruits>Texture

thin, papery19
19. 010-001

<Inflorescences>Cincinni

with closely spaced cincinni20
20. 005-001

<Leaves>Petiole

petioles or rachis unwinged.21
21. 004-001

<Ovary>Carpels

of carpels22
22. 009-001

<Ovary>Style

style distal .23
23. 009-002

<Seeds>Arillodes

with a arillode around the hilum24
24. 011-003

<Seeds>Colour

black25
25. 011-002

<Seeds>Embryo

embryo .26
26. 011-004

<Seeds>Shape

subglobose27
27. 011-001

<Stamens>Anthers

anthers sometimes with an apical appendage.28
28. 008-003

<Stamens>Filaments

filaments unequal;29
29. 008-002

<Stamens>Stamen number

830
30. 008-001

<Stems>Cross section

cross section with a single vascular cylinder.31
31. 002-005

<Stems>Lenticels

and lenticellate32
32. 002-002

<Stems>Lobe number

becoming 3-lobed with age33
33. 002-003

<Stems>Sap

producing milky sap34
34. 002-004

<Stems>Shape

terete35
35. 002-001

Calyx

Calyx of ;36
36. 007

Description

Herbaceous to woody vines. Stems tereteand lenticellate, becoming 3-lobed with age, producing milky sap; cross section with a single vascular cylinder. Stipules minute, deciduous or persistent. Leaves trifoliolate or less often biternate; petioles or rachis unwinged. Inflorescence a thyrse with closely spaced cincinni. Flowers zygomorphic, bisexual. Calyx of 5 sepals; petals 4, distinct, usually < 4 mm long, spatulate, with an adnate, hood-shaped appendage on adaxial surface; disk unilateral, 4-lobed, receptacle enlarged into a short androgynophore. Stamens 8; filaments unequal; anthers sometimes with an apical appendage. Ovary of 3uniovular carpels; style distal with 3 stigmatic branches. Fruits thin, papery, semi-inflated capsules, with narrow marginal wing. Seeds subglobose, black, with a heart-shaped or reniformwhite arillode around the hilum; embryo with the abaxial cotyledon bent over the biplicate adaxial cotyledon.

Distribution

Chile absent, Guianas present, Lesser Antilles absent, South America present, Southern America: Cuba (Cuba absent)
Central America, South America except Chile, Cuba, and some of the Lesser Antilles, 15 species, one in the Guianas.

Flowers

Flowers zygomorphic, bisexual.37
37. 006

Fruits

Fruits , .38
38. 010

Habit

Herbaceous to woody vines.39
39. 001

Inflorescences

Inflorescence a thyrse .40
40. 005

Leaves

Leaves trifoliolate or less often biternate;41
41. 004

Ovary

Ovary ;42
42. 009

Seeds

Seeds , , ;43
43. 011

Stamens

Stamens ;44
44. 008

Stems

Stems , , ;45
45. 002

Stipules

Stipules minute, deciduous or persistent.46
46. 003