USDA Nematode Collection was established in June 1960 By A. Morgan Golden. It is currently directed and curated by Dr. Zafar A. Handoo with technical support from Steve Rogers. It is one of the largest and most valuable nematode collections in existence with over 49,200 permanent slides and vials, and a total repository of nematode specimens reaching several million. It includes over 1900 type specimens, and the valuable and irreplaceable collections of Cobb-Steiner, Thorne, and others. Nematodes from worldwide and domestic sources are represented in the collection. The Collection and database provide important information for reference purposes and taxonomic research by U.S. and foreign scientists and a permanent repository for type and other specimens. This website provides a portal to search those specimens that have been cataloged to date and provides data on nematode hosts, occurrence, and distribution.
Displaying 33997 - 34008 of 41939
Entry Number: 34004
- Nematode: Heterodera marioni
- Host: Nicotiana tabacum (Tobacco) in/on Root
- Origin: Arlington, Virginia, USA
- Collector: E. E. Clayton via G. Steiner
- Date Received: 1941 Dec 19
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14318 to G-14337 (cross sections)
Entry Number: 34005
- Nematode: Heterodera marioni
- Host: Castilla sp. (Gumtree) in/on Root
- Origin: Florida via Beltsville, Maryland, Florida, USA
- Collector: via E. May via G. Steiner
- Date Received: 1943 Feb 02
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14338 to G-14377 (cross sections)
Entry Number: 34006
- Nematode: Heterodera marioni
- Host: Geranium sp. (Rose geranium) in/on Stem
- Origin: Beltsville, Maryland, USA
- Collector: E. M. Buhrer & J. H. Machmer via G. Steiner
- Date Received: 1943 Mar 05
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14378 to G-14382 (cross sections)
Entry Number: 34007
- Nematode: Heterodera marioni
- Host: Solanum tuberosum (Potato) in/on Root
- Origin: Tampa, Florida, USA
- Collector: E. West via G. Steiner
- Date Received: 1943 Mar 08
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14383 to G-14397 (cross sections)
Entry Number: 34008
- Nematode: Heterodera marioni
- Host: Solanum tuberosum (Potato (poss. Bliss Triumph)) in/on Root
- Origin: Harlingen (15 miles from Brownsville), Texas, USA
- Collector: H. T. Longino via Conklin via R. C. Wright via G. Steiner
- Date Received: 1943 Feb 13
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14398 to G-14407 (cross sections)
Entry Number: 34009
- Nematode: Heterodera weissi
- Host: Polygonum persicaria (Polygonum) in/on Root
- Origin: Beltsville, Maryland, USA
- Collector: via G. Steiner
- Date Received: 1943 Jun 08
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14408 (cross sections)
Entry Number: 34010
- Nematode: Heterodera marioni
- Host: Begonia sp. (Begonia) in/on Root
- Origin: Beltsville, Maryland, USA
- Collector: via G. Steiner
- Date Received: 1941 Jun 12
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14409 (cross sections)
Entry Number: 34011
- Nematode: Heterodera marioni
- Host: Citrullus vulgaris (Watermelon) in/on Rind
- Origin: Gainesville, Florida, USA
- Collector: J. R. Watson via G. Steiner
- Date Received: 1943 Jun 22
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14410 to G-14435 (cross sections)
Entry Number: 34012
- Nematode: Heterodera marioni
- Host: Gardenia thunbergi (Gardenia) in/on Root
- Origin: Washington, DC (Exp.), District of Columbia, USA
- Collector: J. Tyler via G. Steiner
- Date Received: 1938 Jan 18
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14436 to G-14445 (cross sections)
Entry Number: 34013
- Nematode: Heterodera marioni
- Host: Tagetes sp. (Marigold (Legion of Honor)) in/on Root
- Origin: Washington, DC (Exp.), District of Columbia, USA
- Collector: J. Tyler via G. Steiner
- Date Received: 1938 Jan 18
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14446 to G-14465 (cross sections)
Entry Number: 34014
- Nematode: Heterodera marioni
- Host: Tagetes sp. (Marigold (Josephine)) in/on Root
- Origin: Washington, DC (Exp.), District of Columbia, USA
- Collector: J. Tyler via G. Steiner
- Date Received: 1938 Jan 18
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14466 to G-14475 (cross sections)
Entry Number: 34015
- Nematode: Heterodera marioni
- Host: Tagetes sp. (Marigold (Lucida)) in/on Root
- Origin: Washington, DC (Exp.), District of Columbia, USA
- Collector: J. Tyler via G. Steiner
- Date Received: 1938 Jan 18
- Disposition of Sample: Specimens to USDANC (General)
- Slides: G-14476 to G-14485 (cross sections)