John L's Carnivorous Plant Photos

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Some Other Pitcher Plants
photographed in southeastern North Carolina (#16-17, 24-26),
Lakeland, GA (#20-23) and southern Mississippi (#27)

16 – The southern pitcher plant Sarracenia purpurea venosa.
17 – The yellow pitcher plant S. flava.
18 – Sticky material produced by the S. flava leaf which possibly aids in the attraction of insects to the plant.
19 – The S. flava flower with its thin yellow petals.
20-23 – Four views of S. flava photographed by Joerg N. Pirl near Lakeland, Georgia.
24 – The hybrid formed by the Sarracenia purpurea venosa and S. flava, commonly called "S. catesbaei."
25 – The hooded pitcher plant S. minor. Sarraceniaspecies other than S. purpureaare not efficient in catching rainwater and probably depend more on plant enzymes and less on bacterial activities in the breakdown of entrapped insects (and other animals).
26 – The red pitcher plant S. rubra.
27 – The pale pitcher plant S. alata.


More Carnivorous Plants of Interest

28 – The threadleaf sundew Drosera filiformis– probably ssp. tracyi– with its sticky glandular hairs on long thin leaves.
29 – The roundleaf sundew Drosera rotundifolawith its wide, flat leaves.
30 – Several specimens of the butterwort Pinguicula agnataspilling over from a crowded flowerpot. Note the rosettes of flat, moist leaves.
31 – The "blushing bromeliad," Neoregilia carolinae. This is a specimen from the U.W. Botany Department greenhouse. Bromeliads are not generally considered carnivorous plants. However, insects which become entrapped in the central pool of water could possibly contribute to the plant's benefit by means of the products of bacterial decomposition such as ammonia. As in the leaves of the northern pitcher plant which fill up with rainwater, a very interesting assortment of bacteria can be found associated with bromeliads, including purple non-sulfur photosynthetic bacteria such as Rhodomicrobium.


Orchids

Orchids are sometimes found in the same habitat as carnivorous plants. The bog where the following three tiny specimens were photographed surrounds an 8-acre lake and is located in a remote part of northern Wisconsin. The bog is alkaline at one end of the lake and acidic at the other. One can note how the pH gradient affects the growth of different kinds of plants in the bog. For example, sedges appear in the alkaline area but not in the acidic. Over 10 species of orchids can be found in this bog which also supports heavy growth of Sarraceniaand Drosera.

32 – Arethusa bulbosa.
33 – Pogonia ophioglossoides.
34 – The Grass-Pink, Calopogon tuberosus – barely three inches tall.

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Page last modified on 6/14/04 at 9:45 AM, CDT.
John Lindquist, Department of Bacteriology,
University of Wisconsin – Madison

Thanks for help regarding orchid identification to Eric S. and Nancy B.!