Violets

Question 1

Answer 1

Hypericum perforatum

Hypericaceae

• “perforations” on the underside of the petals. ecologically invasive.

Question 2

Answer 2

Viola sororia

Violaceae

-When keying plants of this genus you must look at the presence/absence of leafy stems, petal color and pubescence, and leaf shape.

Question 3

Answer 3

Viola pubescens

Violaceae

• presence of leafy stems when compared wth V. sororia, which doesn’t have them.
• yellow petals.

Question 4

Answer 4

Echniocystis lobata

• alternate, star-shaed leaves with 5-7 lobes.
• males have flower clusters, females have single flowers.

Question 5

Populus

Aspens / Cottonwoods

Answer 5

Salicaceae

-They possess male and female catkin inflorescences on separate trees (dioecious!). Capsules send off seeds with cotton like attachments.

Question 6

Salix

Willows

Answer 6

Salicaceae

• leaves have a distinctive shape and usually large stipules

Question 7

Euphorbia

Spurges

Answer 7

-The “flowers” are actually weird inflorescences (called a cyathium, or cyathia plural) with showy bracts, many single-stamened male flowers, and a single female flower with a 3-parted ovary and capsule.

Question 8

Parthenocissus

Virginia Creeper

Answer 8

Vitaceae

• vines with adhesive disks at the end of their tendrils.
• 5 lobed leaves that turn a spectacular red and wine color in the autumn.

Question 9

Vitis

Wild Grapes

Answer 9

-only two in WI

Question 10

Violaceae

Wild Violets

Answer 10

CA 5 COZ 5 A 5 G (3)

• Violets herbaceous – basal or stemmed leaved Leaves often heart shaped and palmately veined or lobed, and sometimes palmately compound.
• Stipules are well developed.
• flowers are strongly zygomorphic. lower petal spurred, 5 stamens form extensions connective around the style.

Question 11

Hypericaceae

St. Johns Wort

Answer 11

CA 5 CO 5 A ∞ G (3-5)

• stamens often grouped at the base
• pisitl has 3 to 5 fused carpel with parietal to axile placentation

Question 12

Salicaceae

Willows

Answer 12

• simple alternate leaves
• dioecious, sometimes clonal
• Male flowers are reduced to essentially stamens
• Female flowers reduced to only a 2-3 carpellate pistil, with large feathery styles

Question 13

Euphorbiaceae

Spurges

Answer 13

CA 5 CO 0 A ∞ G 0

CA 5 CO 0 A 0 G (3)

• Leaves alternate, simple (often palmately lobed) or palmately compound
• Family has unisexual flowers, 5 sepals, no petals, numerous stamens, 3 fused carpels, and capsules
• The “flower” of our flowering spurge is actually a highly modified inflorescence = cyathium

Question 14

Cucurbitaceae

Melons

Answer 14

• Alternate, simple leaves which are typically palmately lobed and veined. Tendrils are modified inflorescences.
• Sepals and petals are both fused; stamens are weird, female flower is epigynous
• have pepos

Question 15

Vitaceae

Grapes

Answer 15

• Flowers are small and usually clustered in more showy inflorescences. Fruits berries with several seeds
• Leaves simple in Vitis (grapes) and usually compound in Parthenocissus (woodbines, Boston ivy); venation and lobing usually strongly palmate
• Plants climb by tendrils = modified branches or inflorescences; others climb by holdfasts; these often negatively phototropic