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Pollination Biology of Lapeirousia subgenus Lapeirousia (Iridaceae) in southern Africa; floral divergence and adaptation for long-tongued fly-pollination


Abstract | Materials and Methods | Results | Discussion | Literature

Table 4. Nectar concentration and volume in subgenus Lapeirousia. Taxa of subgenus Lapeirousia are grouped according to flower type and pollinator class as in Table 2. Figures for nectar sugar concentration are means, standard deviation given in parentheses, but ranges are provided for less than three observations.

SpeciesSample
size
Nectar
conc. (%)
Nectar
volume ml
L. silenoides group
L. dolomitica
subsp. dolomitica 5 30.4(2.4) 1.4-3.1
subsp. lewisiana 4 27.0(0.8) 5.1.5.5
L. jacquinii 5 27.3(2.9) 1.5-2.3
1251.5
L. oreogena 10 25.8(1.6) 2.5-7.3
L. pyramidalis subsp.
regalis
10 28.4(2.8) 2.6-4.8
3 28.2(0.8) 2.6-4.8
L. silenoides 10 26.5(1.1) 1.7-2.8
3 29.0(2.0) 2.3-3.6
2 22-25 2.6-2.8
1 26 2.1
L. violacea 3 25.0(0) 1.5-1.6
7 28.2(2.9) 1.4-1.8
L. divaricata group
L. barklyi 2 26-27.5 0.9-1.3
L. divaricata 7 26.7(1.5) 0.6
L. exilis 10 34.1(1.8) 0.9-1.7
L. montana 10 24.8(2.2) 2.6-8.1
L. plicata 3 28.3(3.2) 0.9-1.7
L. pyramidalis subsp.
pyramidalis
3 30.1(4.9) 0.7-1.7
7 34.1(1.6) 0.8-3.0
L. spinosa 2 31-32 1.1-1.2
L. tenuis 6 46.1(5.1) 0.4-1.0
L. fabricii group
L. anceps 10 23.5(1.3) 1.5-3.1
7 21.1(1.4) 1.4-3.2
L. arenicola 4 32.8(2.1) 0.6-0.7
L. fabricii 10 32.5(2.3) 1.3-3.4
5 24.8(2.6) 0.8-1.5
7 25.2(1.1) 0.4-0.9
L. macrospatha 10 23.8(1.5) 0.7-3.3
3 21.0(1.0) 3.5-5.7
L. simulans 4 25.8(1.7) 0.8-1.5
L. verecunda 10 26.6(2.5) 0.6-3.0

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