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Appendices & Glossary - Botanical Research Institute of Texas

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Austin College Herbarium, Sherman, <strong>Texas</strong><br />

Plants <strong>of</strong> TEXAS<br />

Cnidoscolus texanus (Müll.Arg.) Small Euphorbiaceae<br />

GRAYSON County: Southwestern corner <strong>of</strong> county, ca. 4 km south <strong>of</strong> Tioga,<br />

just <strong>of</strong>f (east <strong>of</strong>) Hwy 377, ca. 200 meters from southern edge <strong>of</strong> eastern<br />

arm <strong>of</strong> Lake Ray Roberts.<br />

Open, sandy, weedy field with Cenchrus spinifex and Monarda punctata.<br />

Plants herbaceous, ca. 1/2 to 1 m tall, common. Locally known as bull-nettle.<br />

Flowers white, sweet-scented; sap milky; foliage with glass-like hairs which<br />

break <strong>of</strong>f in the skin and cause an intense burning sensation.<br />

33° 26' 36.1" N 96° 55' 25.8" W (GPS)<br />

Elevation: ca. 190 m 24 Sept. 1980<br />

Coll.: Delzie Demaree with Robert Kral No.: 65,967<br />

and Donna Ware<br />

COLLECTING HERBARIUM SPECIMENS/APPENDIX EIGHT 1199<br />

permanent storage and use in the herbarium is done by herbarium personnel properly trained in these<br />

techniques—for example, special attachment procedures and long-life (archival) glues are used. There<br />

are a number <strong>of</strong> major herbaria in <strong>Texas</strong> with the largest including those at the University <strong>of</strong> <strong>Texas</strong> in<br />

Austin, the <strong>Botanical</strong> <strong>Research</strong> <strong>Institute</strong> <strong>of</strong> <strong>Texas</strong> (BRIT) in Fort Worth, and <strong>Texas</strong> A&M University in<br />

College Station. Many other schools or organizations have valuable collections; <strong>of</strong> particular note in<br />

East <strong>Texas</strong> are the herbaria at Stephen F. Austin State University in Nacogdoches, the Robert A. Vines<br />

Science Center in Houston, and Baylor University in Waco. BRIT welcomes the donation <strong>of</strong> herbarium<br />

specimens and botanists there can be contacted at (817) 332-4441 or info@brit.org or <strong>Botanical</strong> <strong>Research</strong><br />

<strong>Institute</strong> <strong>of</strong> <strong>Texas</strong>, 509 Pecan Street, Fort Worth, TX 76102-4060. Such specimens will be scientific<br />

contributions, will have permanent protection, and will be important resources for the future.<br />

GETTING STARTED COLLECTING PLANTS<br />

Austin College Herbarium, Sherman, <strong>Texas</strong><br />

Cnidoscolus texanus (Müll.Arg.) Small Euphorbiaceae<br />

<strong>Texas</strong>, Grayson Co., southwestern corner <strong>of</strong> county, ca. 4 km south <strong>of</strong> Tioga,<br />

just east <strong>of</strong> Hwy 377, ca. 200 meters from southern edge <strong>of</strong> eastern arm <strong>of</strong><br />

Lake Ray Roberts in open, sandy, weedy field with Cenchrus spinifex and<br />

Monarda punctata. Plants herbaceous, ca. 5–10 dm tall, common. Locally<br />

known as bull-nettle. Flowers white, sweet-scented; sap milky; foliage with<br />

glass-like hairs that break <strong>of</strong>f in the skin and cause an intense burning<br />

sensation.<br />

33° 26' 36.1" N 96° 55' 25.8" W (GPS); ca. 190 m<br />

24 Sept. 1980<br />

Coll.: Delzie Demaree 65,967<br />

with Robert Kral and Donna Ware<br />

How do you get started collecting plants? Unfortunately, pressing plants between the pages <strong>of</strong> books is<br />

usually not successful because the plants dry too slowly, loose their color, seldom dry flat, and tend to<br />

damage the book. Therefore one <strong>of</strong> the first steps is to make or buy a plant press (including two end<br />

boards, corrugated cardboards, blotters, and two straps). A simple press can be made by cutting two 12"<br />

18" pieces out <strong>of</strong> 3/8" or 1/2" plywood and then rounding the corners and sanding the surfaces to<br />

avoid injury from splinters. The 12" 18" size is slightly larger than a folded half-sheet <strong>of</strong> newspaper<br />

and is thus ideal for making the correct size specimens. Other types <strong>of</strong> end boards can be made out <strong>of</strong><br />

nearly any reasonably lightweight, sturdy material. Cardboards the same size as the press can be cut

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