Some Growth Aspects of Seymeria cassioicies

Charles M. Stangle; Lytton J. Musselman

doi:10.2737/SO-RN-276

Treesearch

Some Growth Aspects of Seymeria cassioicies

Informally Refereed

Authors:

Charles M. Stangle, Lytton J. Musselman

Year:

1981

Type:

Research Note

Station:

Southern Research Station

DOI:

https://doi.org/10.2737/SO-RN-276

Source:

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

Download (PDF 301 KB)

Download (PDF 301 KB): https://research.fs.usda.gov/download/treesearch/1833.pdf

Abstract

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

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.