Southern Research Station

Title: Some Growth Aspects of Seymeria cassioicies

Author: Stangle, Charles M.; Musselman, Lytton J.

Date: 1981

Source: Res. Note SO-276. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 3 p.

Station ID: RN-SO-276

Description: The root parasite, Seymeria cassioides, will not initiate height growth without attachment to a host root when grown under normal fertility conditions, although the seedling may remain alive for 40 days or more without a host. During this time the roots elongate markedly. Fresh pine root segments do not influence the direction of root growth. Although S. cassioides is always root parasitic in nature, it apparently produces most of its own food, as plants that are vigorously parasitizing pines die when placed in the dark even though the host plant is exposed to light.

Keywords: root parasite, hemiparasite, Scrophulariaceae

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Citation

Stangle, Charles M.; Musselman, Lytton J.  1981.  Some Growth Aspects of Seymeria cassioicies.   Res. Note SO-276. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 3 p.