Elms, Mulberries, and Legumes

Question 1

Answer 1

Ceanothus americanus

• a nitrogen fixer

Question 2

Answer 2

Lupinus perennis

• the only lupine in WI, with palmately compound leaves and monadelphous stamens (filaments of all 10 fused into a tube).
• restricted to sandy oak savannas

Question 3

Answer 3

Robinia pseudoacacia

Rhamnaceae

• sinuous bark ridges
• alternate, untoothed, pinnate leave

Question 4

Answer 4

Rosa multiflora

• ecologically invasive weed in most of the united states
• pinnately compound leaves with very prominent stipules and finely toothed
• flowers have only five petals

Question 5

Answer 5

Morus alba

• introduced. the females produce dark fruits.
• leaves lobed or unlobed.

Question 6

Answer 6

Ulmus americana

Ulmaceae

• used to be more common but got mostly wiped out by dutch elm disease.
• alternating simple leaves in an ovate shape

Question 7

Geum

Avens

Answer 7

Rosaceae

• generally innocuous herbs that spread like crazy along trails.
• the basal leaves of some species are evergreen
• The prior year’s dark green leaves lie flat on the ground and die off some time after the new leaves begin to grow, but they presumably provide some energy to the plant early in the spring.

Question 8

Rhamnus

Buckthorn

Answer 8

Rhamnaceae

• a common invader.
• round, toothed leaves that are oppositely arranged and blackish bark distinguish it.
• small flowers and black berries.

Question 9

Trifolium

Clover

Answer 9

Fabaceae

• all of our species are introduced

Question 10

Fabaceae

Legumes

Answer 10

Caesalpinoid - CA 5 CO 5 A 10 G 1

Faboid - CA (5) CO 3+(2) A (9)+1 G 1 (banner behind the lateral petals, bottom keel usually fused)

• Most of the legumes are compound leaved - pinnately, palmately, trifoliolate - a few are simple leaved
• generally, well-developed stipules.

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Question 11

Rhamnaceae

Buckthorns

Answer 11

CA 4,5 CO 4,5 A 4,5 G (3)

• 2 general and 6 sp in WI
• usually have thorns. 4 or 5-merous
• stamens are opposite the petals, which is unusual in flowering plants

Question 12

Ulmaceae

Elms

Answer 12

• Leaves are distichously arranged - 2 ranks in one plane - and pinnately veined
• strongly asymmetric leaf bases

Question 13

Urticaceae

Nettles

Answer 13

• palmi-pinnate veination, either alternate or opposite
• Flowers are reduced and unisexual, in congested inflorescences, and mostly wind-pollinated
• Stamens have a peculiar elastic spring-like mechanism that flings pollen further out from the plant

Question 14

Moraceae

Mulberries

Answer 14

• strongly alternate, palmi-pinnately veined.
• reduced, unisexual, with no petals
• fruit an aggregate of the inflorescences, not just a single flower