Nomenclature Homework

1. Correct the following or point out what is wrong (there can be more than one error per line):

amaranthus Albus (note: "albus" is a Latin adjective that means "white")
• Rosa carolina villosa

• Cornus florida cloud nine

• Rosa carolina fragrans, foliis medio tenus serratis

• Viola x bernardii

• Malus baccata var. 'Gracilis'

• Tilia cordata cv. greenspire

• Amaranthus spinosus Linnaeus

• Malus baccata mandschurica

• Phlox var. amplexicaulis

• Quercus alba x Q. macrocarpa = Q. x bebbiana

• Gleditsia triacanthos 'Sunburst

2. The scientific name of a species is Magnolia grandiflora Linnaeus.

• The word "Magnolia" is the ____________________

• The word "grandiflora" is the ____________________

• The word "Linnaeus" is the ____________________

• Magnoliaceae is the name of an order ____________________

• Liliopsida is the name of a division ____________________

• The plural of "genus" is "genera" ____________________

• The singular of "species" is "specie" ____________________

• The pronunciation of Aloe (as the name of a genus) is al-o ____________________

4. Apple 'Macintosh' is the name of a computer as well as the common name of a cultivar of apples that we often eat. All apples belong to the genus Malus and the specific epithet of the cultivated apple is pumila. So, what is the scientific name of the Macintosh apple?

5. The name of the genus for a group of plants we commonly call "redbuds" is Cercis. It belongs to the family Fabaceae. Linnaeus gave the specific epithet of canadensis to the native redbud that occurs here in Illinois. What is the complete scientific name of this species?

6. Most redbud trees belonging to the species in question 5 have green leaves. However, some trees in cultivation have leaves that are purple throughout the growing season, and these are given the cultivar name of 'Forest Pansy.' Write out the two correct ways of the scientific name of this cultivar.

7. Most redbud trees have dark pink/mauve flowers. In Missouri, a few trees occur in the wild that have white flowers; this color form has been propagated and the plants are also in cultivation. Alfred Rehder described these white-flowered plants as a botanical form, using the epithet of alba. What is the complete scientific name of the white-flowered redbud?

8. Species often get described more than one time. All of the following names are synonyms; that is they all refer to what we consider today to be the same species. What is the correct name for the following species of Rosa?

• R. intermedia Carrière, 1868

• R. multiflora Thunberg, 1784

• R. polyantha Siebold & Zuccarini, 1843

• R. thrysiflora Déséglise, 1876

• R. thunbergii Trattinnick, 1823

9. The genus Rosa belongs to a family and order that are based on the stem of the genus (Ros–). It is also a dicot and a flowering plant. Write out a hierarchial classification for this situation, using proper endings (suffixes). Then add the species Rosa carolina to the hierarchy.