Weeds Lab 10/18

Question 1

Answer 1

Bull thistle
Asteraceae
B
Sd

Spiny-winged stems and leaves with rough hairs on the upper surface and softer whitish hairs below.

Question 2

Answer 2

Canada goldenrod
Asteraceae
CP
Sd, Rhz

Question 3

Answer 3

Canada thistle
Asteraceae
CP
Sd, Rhz

The flowers of Canada thistle do not have spines or prickles unlike bull or musk thistle. Stems are also spineless unlike Bull Thistle (

Question 4

Answer 4

Chicory
Asteraceae
SP
Sd

All leaves are alternate and lanceolate in outline and usually have rough hairs on both surfaces. All of the leaves are also slightly dissected or lobed and usually have toothed margins

Question 5

Answer 5

Hawkweed spp.
Asteraceae
CP
Sd, Rz,Stn

oblanceolate to oblong leaves, hairy above and below, prominent white mid-vein (most apparent near base), rosette

Question 6

Answer 6

Virginia copperleaf
Euphorbiaceae
A
Sd

Question 7

Answer 7

Healall
Lamiaceae
CP
Sd, Stn

opposite, oval to narrowly oval, entire or slightly toothed, hairy to smooth, lower petioled, upper sessile

Question 8

Answer 8

Curly dock
Polygonaceae
SP
Sd

basal leaves narrowly lanceolate, smooth, margins curled or wavy; stem leaves alternate, smaller above

Question 9

Answer 9

Bulbous buttercup
Ranunculaceae
SP
Sd

alternate, palmately divided in 3 segments - apical stalked, pubescent, long petioles below, sessile above, basal from bulb-like base

Question 10

Answer 10

Smooth bedstraw
Rubiaceae
CP
Rz, Stn, Sd

oblanceolate to obovate, bright green, whorled 6 to 8 per node, sessile

Question 11

Answer 11

Virginia Creeper
Vitaceae
P vine
Sd, Creeping stems

alternate, palmately compound, leaflets five sometimes seven and egg-shaped, long petioled, margins coarsely toothed mostly above the middle, dark green above and light below, bright red in fall

Question 12

Answer 12

Wild grape
Vitaceae
P vine
Sd

alternate, variable by species mostly oval with pointed tips, veins from central point, some have 3 to 5 lobed, all toothed margins