PLS 831

Taxonomy of Ornamental Plants

Spring 1997

Test 3

                        Name  _______________________________________

Part 1.  Short answer (20 pts).  Define what each of the numbered terms indicate in the following description.

Gaudinia1 hispanica2 Stace & Tutin3, sp. nov.

   Gramen Annuum, 6-28 cm altum, caespites parvos laxos formans.  Culmi erecti rigidi graciles. Folis molliter patenterque pubescentes; vaginae valde striatae; ligulae usque ad 0.5 mm longae, hylinae, apice truncatae laceratae; laminae 1-11 cm, primo planae, demum convolutae, usque ad 2 mm latae. 

Holotypus4: Near Emito del Rocio, S.W. of Seviulla, Huelva, Spain, 25 May 19675, Charter, Moore & Tutin s.n., (LTR6).

   Isotypi7: K, SEV.

Paratypi8:  Entre Almonte y El Rocio, Huelva, Spain, 20 June 1969, S. Silvestre & B.

   Valdes9 2289/6910 (LTR, SER).

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Part 2. Essay questions (60 pts).  Please answer each of the following essay questions with complete yet concise answers.

1.         Due to budget cuts, the Claude Phillips (housed at Delaware State College) herbarium is to be eliminated.  You have been asked to justify why the herbarium should not be eliminated.  Please explain for the administration why an herbarium is critical to a major garden. (20 pts)
2.         The new director of the J.C. Raulston Arboretum has asked you to write an accession policy for the garden.  This garden is integral to the research and teaching  (in all its aspects) goals of the Department of Horticultural Science at North Carolina State Arboretum?   Please write a sentence or two that could serve as an accession “statement” that would embody the trust of the policy and briefly justify this statement.  (20 pts)
3.         A major collection of the J.C. Raulston Arboretum is viburnums.  You would like to justify the species status of (from north to south) Viburnum cassinoidies, V. lentago, V. prunifolium, and V. rufidulum.  Realizing that some type of genetic isolation is critical to the idea of a species,  what types of mechanisms could you try to identify to validate these plants at the species level.  There is considerable range overlap of at three of these species in several locations. (20 pts)
Part 3.  Familial characteristics (20 pts).  Write a key to separate the following families.

            Aquifoliaceae

            Cornaceae

            Daphniphyllaceae

            Elaeagnaceae

            Fabaceae

            Fagaceae

            Salicaceae

            Staphylaceae

            Styracaceae