Quiz 1 Flashcards
tansy ragwort
- Asteraceae
- flowers bunched at top
- biennial
- alternate leave
pineappleweed
- Asteraceae
- smells good
- annual
- **small, cone shaped flowers **
prickly lettuce
- Asteraceae
- spiny midrib on the underside
- biennial, winter annual
- clasping lobes
- flowers all flat yellow
horseweed
- Asteraceae
- annual
- large flowers on the bottom, smaller on top
- **stalked leaves on the bottom **
- wimpy dandelion looking leaves
Canada thistle
- Asteraceae
- perennial
- small purple flowers
- no spikes on involucre
bull thistle
- Asteraceae
- biennial
- large purple flowers
- spines on involucre
yellow starthistle
- Asteraceae
- annual
- yellow flowers with spines on underside
- leaves deeply lobed
mayweed chamomile
- Asteraceae
- annual
- foul smelling
- very bushy when flowering
- flowers look like perfect daisies
*
wild carrot
- Apiaceae
- bienniel
- strong carrot smell
- umbels of white flowers
cow parsnip
- Apiaceae
- perennial
- **huge white umbels **
- huge hairy and grooved leaves
poison hemlock
- Apiaceae
- biennial
- blotchy purple stem
- white, perfect flowers
- shiny, finely pinnately leaves divided 3-4 times, segmented leaflets
tansy ragwort
poison hemlock
Apiaceae
- parsley family
- odiferous
- hollow stems
- umbels
- leaves are alternate or all basal
pigweed
- Amaranthaceae
- annual
- prominant veins
types of leaves
petiolate, sessile and clasping
What is a Petiolate leaf?
leaf is borne on a petiole, stalk or stem
What is a sessile leaf?
leaf lacks a petiole, stem or stalk, is attached directly to the stem
Characteristics of Apiaceae
leaves are alternate or all basal
leaves are simple to pinnately/palmately compound
odoriferous
stems are often hollow
infloresence is composed of simple or compound umbels of perfect flowers
Characteristics of Amaranthaceae
leaves are alternate and simple. no stipules. deep veins
infloresence is varied, frequently with three colorful bracts subtending the flowers
flowers are small and non-showy, no petals. usually greenish purple
perianth
petals and sepals
corolla
all petals together
calyx
all sepals together
receptacle
where flower is attached,
supports sepals, petals, stamens and pistils
pedicle
flower stem
parts of stamen
anther, filament
parts of pistil
stigma, style, ovary
petiole
stalk of leaf
raceme
flowers are single on individual pedicels along an elongated rachis
Panicle
infloresence with two or more flowers on a branch arranged on an elongated axis (the rachis. the basal or lateral flowers or some of them, open before the terminal or central flowers on any axis. Typically in grasses.
Cyme
branched inflorescence in which the central or uppermost flower opens before the peripheral or lowermost flowers on any axis
Umbel
a flat topped or rounded cluster where pedicels radiate from the same point, no rachis.
Spike
inflorescence with perfect sessile flowers along the rachis. Typically in grasses.
What are the Asteraceae that are annuals?
Mayweed Chamomile
yellow starthistle
horseweed
pineappleweed
common groundsel
spiny sowthistle
What are the asteraceae that are biennial?
bull thistle
pricky lettuce (also winter annual)
tansy ragwort
Which of the Asteraceae are Perennial?
Canada thistle
spiny sowthistle
Asteraceae
annual
clasping leaves
contains a milky juice
looks like dandelion but spiny leaves
common groundsel
Asteraceae
annual
black tipped involucral bracts
yellow disk flowers
irregularly toothed leaves
