Integrative Biology 335
Systematics of Plants

Unit V: Rosids continued

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Announcements:

Your fourth lecture assignment was distributed just prior to spring break. If you need a copy, pick one up tomorrow in lab. This assignment will be due in class on Monday, April 6th.

Next lecture we will see another video, Branching Out. Please print supplementary lecture notes for this video and bring them to class with you.

Your second lecture exam is scheduled for Wednesday, April 8th, and will cover lectures 17 through 30. Some questions will also come from the first lecture exam.

How I spent my spring break holiday
Florence, Italy
Michelangelo's David at the Accademia Gallery, Florence
Gelati, Italien ice cream
Ticket to ACF Fiorentina Football match
Stadio Artemio Franchi
Herbarium Universitatis Florentinae, Herbarium Webbianum
Andrea Cesalpino, 1519-1603, "First Plant Taxonomist", produced the first scientific classification of flowering plants (in 1583). Prior to Linnaeus, this work was most important. Uffizi Gallery, Florence.
Cesalpino was the first botanist to make a herbarium, and his collection is one of the oldest herbaria still in existence (preamble dated 1563)
Specimen of Acer from Cesalpino Herbarium
Caesalpinia pulcherrima named after A. Cesalpino, as is Fabaceae subfamily Caesalpinioideae
Roberto Cavalli "Herbier" Jersey Dress (at $1,495.00 at Nordstrom's in USA)
Papaver? Hardly. And a polynomial name too!

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Text and Other Resources:

You are responsible for the following pertinent material presented in your textbook:

• Fabaceae, legume or bean family, pp. 371–377 (three subfamilies!)
• Euphorbiacae, spurge family, pp. 355–359
• Onagraceae, evening primrose family, pp. 414–415

Also, view Digital Flowers

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Course Objectives:

After studying this material you should be able to:

1. Know the most important diagnostic features of these three rosid families and be able to compare and contrast them. This is especially relevant for the three subfamilies of Fabaceae. For more information on how to study families, refer to Objectives for Plant Families.

2. List the major clades to which these three families belong and describe their interrelationships.

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Some Plant Families Formerly Classified in Subclass Rosidae

Traditional classification system of flowering plants

In subclass Rosidae, Arthur Cronquist recognized 18 orders, 114 families, and about 58,000 species. He considered this the largest subclass of angiosperms in terms of the number of families.

Evidence from phylogenetic analyses of molecular data indicates that the Rosidae are not a monophyletic group (as is true for just about all of Cronquist's other subclasses of flowering plants). Most families of Rosidae are now classified in the Rosid Clade.

Generally, members of the Rosid clade are more advanced than those of the Magnoliid clade but less advanced than those of the Asterid clade.

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Classification and Phylogeny:

EUDICOTS/Core Eudicots

ROSID CLADE

FABIDS (old Eurosids I clade)

Fabaceae (Fabales)
Euphorbiaceae (Malpighiales)

MALVIDS (old Eurosids II clade)

Onagraceae (Myrtales) (placement uncertain; possibly sister to Malvids)

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There are still some features in common among many members of the rosid clade (which may help you remember some of their characteristics). These are NOT synapomorphies for the group, however!

• When numerous stamens are present, they develop in a CENTRIPETAL sequence (from the outside inward)
• Frequently with 1 or 2 ovules per locule
• Often with distinct petals
• Placentation mostly parietal or axile (very seldom free central or basal)
• Often with a nectar disc

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FAMILY COVERAGE

FABACEAE (or LEGUMINOSAE):

• Class notes: Fabaceae
  • Legume Family on Wayne's Word webpage General information and lots of nice pictures
  • Line drawing of diverse fruits of Fabaceae
  • Table 9.2, 3 subfamilies, Judd et al., page 376 (top half)
  • Table 9.2, 3 subfamilies, Judd et al., page 376 (bottom half)

• Class notes: Mimosoideae (Mimosa subfamily) and examples
  • Calliandra photo (powderpuff tree)
  • Mimosoideae labelled line drawings, Albizia (mimosa tree) Carroll Wood's Student Atlas of Flowering Plants
  • Another Mimosoideae line drawing From W. Zomlefer, Guide to Flowering Plant Families, p. 162
  • Fig. 9.69 in Judd et al., page 373 Labels as in Wood's Atlas

• Class notes: Caesalpinioideae (Caesalpinia subfamily)
  • Caesalpinioideae, Examples from class notes
  • Bauhinia photo
  • Caesalpinioideae drawing Cercis, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings
  • Caesalpinioideae drawing Cassia, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings
  • Caesalipnioideae additional lines drawings From W. Zomlefer, Guide to Flowering Plant Families, p. 162
  • Fig. 9.70 in Judd et al., page 374 Labels as in Wood's Atlas

• Class notes: Faboideae or Papilionoideae (bean or pea subfamily)
  • Faboideae, Examples from class notes
  • Faboideae drawing Vicia, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings
  • Faboideae drawing Baptisia, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings
  • Faboideae additional line drawings From W. Zomlefer, Guide to Flowering Plant Families, p. 161
  • Fig. 9.71 in Judd et al., page 375 Vicia, Labels as in Wood's Atlas

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ONAGRACEAE

• Class notes: Onagraceae, with examples
• Onagraceae drawing Oenothera, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings
• Onagraceae drawing From W. Zomlefer, Guide to Flowering Plant Families, p. 230
• Fig. 9.93 in Judd et al., page 415 Oenothera, Labels as in Wood's Atlas

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EUPHORBIACEAE

Class notes: Euphorbiaceae

Class notes: Euphorbiaceae, examples

Euphorbiaceae, drawing Euphorbia, from Carroll Wood's Student Atlas of Flowering Plants with labelled drawings

Euphorbiaceae, drawing From W. Zomlefer, Guide to Flowering Plant Families, p. 108

A webpage with many images of Euphorbias

Fig. 9.63 in Judd et al., page 358 Euphorbia, Labels as in Wood's Atlas

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