Phoradendron obtusissimum

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Phoradendron obtusissimum

Content

<<Habit>Basal cataphylls>Cataphyll pair number

1 pair1
1. 001-002-001

<<Habit>Basal cataphylls>Relative distance

0.1-0.3 cm above base2
2. 001-002-002

<<Habit>Internodes>Length

3-8 cm long3
3. 001-001-001

<<Inflorescences>Fertile internodes>Fertile internode number

2 or 34
4. 004-004-001

<<Inflorescences>Flowers>Flower number per bract

4-95
5. 004-002-001

<<Inflorescences>Flowers>Series

2-seriate6
6. 004-002-002

<<Inflorescences>Fruits>Fruit number per bract

3 above each fertile bract7
7. 004-005-001

<<Inflorescences>Sterile bracts>Length

elongating from 1 cm at anthesis to twice that length in fruit8
8. 004-003-003

<<Inflorescences>Sterile bracts>Relative distance

0.1 cm9
9. 004-003-002

<<Inflorescences>Sterile bracts>Sterile bract number

110
10. 004-003-001

<<Petiole>Blade>Apex

apex rounded,11
11. 002-002-003

<<Petiole>Blade>Base

base cuneate, tapering into indistinct petiole;12
12. 002-002-004

<<Petiole>Blade>Dimensions

to 8 x 3 cm13
13. 002-002-002

<<Petiole>Blade>Shape

obovate or oblong14
14. 002-002-001

<<Petiole>Veins>Lateral vein number

215
15. 002-003-001

<Fruits>Colour

translucent white16
16. 005-001

<Fruits>Dimensions

0.6-0.7 x 0.35 cm17
17. 005-002

<Fruits>Perianth segments

perianth segments large, flaring.18
18. 005-003

<Habit>Basal cataphylls

basal cataphylls , , very inconspicuous.19
19. 001-002

<Habit>Internodes

internodes compressed/keeled above, terete below, ;20
20. 001-001

<Inflorescences>Fertile internodes

fertile internodes ;21
21. 004-004

<Inflorescences>Flower arrangement

some fertile internodes or even spikes entirely male, others mixed, usually with 3 apical flowers of a flower area female;22
22. 004-001

<Inflorescences>Flowers

flowers per fertile bract, ;23
23. 004-002

<Inflorescences>Fruits

fruits , placed very high on internode.24
24. 004-005

<Inflorescences>Sterile bracts

extremely low () pair of sterile bracts, ;25
25. 004-003

<Petiole>Blade

blade , ,26
26. 002-002

<Petiole>Length

ca. 0.5 cm long27
27. 002-001

<Petiole>Veins

venation often with prominent, long lateral veins.28
28. 002-003

Description

Plants percurrent; internodes compressed/keeled above, terete below, 3-8 cm long; basal cataphylls 1 pair, 0.1-0.3 cm above base, very inconspicuous. Petiole ca. 0.5 cm long, rather slender; blade obovate or oblong, to 8 x 3 cm, apex rounded, base cuneate, tapering into indistinct petiole; venation often with 2 prominent, long lateral veins. Monoecious. Inflorescence with variable sex distribution: some fertile internodes or even spikes entirely male, others mixed, usually with 3 apical flowers of a flower area female; flowers 4-9 per fertile bract, 2-seriate; 1 extremely low (0.1 cm) pair of sterile bracts, elongating from 1 cm at anthesis to twice that length in fruit; fertile internodes 2 or 3; fruits 3 above each fertile bract, placed very high on internode. Fruit translucent white, 0.6-0.7 x 0.35 cm, perianth segments large, flaring.

Distribution

Argentina present, Southern America: Costa Rica (Costa Rica present); Paraguay (Paraguay present), eastern Bolivia present, tropical S America present
Costa Rica through tropical S America to Paraguay, Argentina, and eastern Bolivia; 120+ collections studied (GU: 12; SU: 2).

Fruits

Fruit , ,29
29. 005

Habit

Plants percurrent;30
30. 001

Individuals Association

Guyana, Pakaraima Mts., Kurupung R., Imatta Cr. near Kurupung Landing, Hoffman et al. 2401 Guyana, Kaieteur Plateau, Kaieteur Falls to Mure-mure Savanna, Cowan & Soderstrom 2129 Guyana, Rupununi Savanna, Mora Savanna near Toroebaroe Cr., Jansen-Jacobs et al. 1105 Guyana, Rupununi Distr., Massara, Graham 255 Guyana, Cuyuni-Mazaruni Region, Pakaraima Mts., Imbaimadai Cr., 1 km W of Imbaimadai, Hoffman et al. 1631 Guyana, Potaro-Siparuni Region, Kaieteur Falls, along river above falls, Hahn et al. 4579

Inflorescences

Inflorescence with variable sex distribution:31
31. 004

Petiole

Petiole , rather slender;32
32. 002

Plant sexuality

Monoecious.33
33. 003