Biology Reference
In-Depth Information
Table 3.2
Data on
Cephalanthera
(Sheviak and Catling
2002
)
Character
Cephalanthera austinae
0LANTHEIGHTCM
19-65
Inflorescence length
5-15
a
Flower number
8-30
a
Dorsal sepal (mm)
12-20 × 4-7
Lateral sepals (mm)
12-20 × 4-7
Lateral petals (mm)
10-17 × 3-6
Lip (mm)
8-12 × 9-14
Column (mm)
10 × 2
b
a
Kipping (
1971
)
b
Luer (
1975
)
Fig. 3.3
Cephalanthera austinae
. (
a
) Flower, front view, scale bar = 4 mm; (
b
) lip, flattened, scale
bar = 5 mm; (
c
) top of column, ventral view showing anther with anther cap; (
d
) top of column, side
view, scale bar (
c
,
d
) = 1 mm.
an
anther,
po
pollen mass,
sg
stigma
(Kipping
1971
; Luer
1975
). Dressler (
1993
), however, noted that the median
stigma lobe, although reduced in some autogamous forms, normally projects well
beyond the axis of the column (Fig.
3.3c, d
) and bears a deposit of glue on its mar-
gin that very probably plays some role in pollination (Rasmussen
1982
). For fur-
ther discussion, see Burns-Balogh et al. (
1987
).
Compatibility and Breeding System
Kipping (
1971
), in a 2-year study in El Dorado County, California, enclosed young
plants with unmanipulated, unopened buds in screen cages. About 14-30% of the
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