Lab 2 (Description) Flashcards
1
Q
Woolly Croton
A
- Native annual forb
- Woolly hairs all over stem, leaves, and seeds that give the plant a whitish glaze
- Fuzzy dense pubescence that is golden
- Responds well to disturbance/Invader of disturbed sites
- Loves full sun
2
Q
Tall Ironweed
A
- Perennial forb (~3-7 ft tall)
- Alternate leaves
- Given the name “Ironweed” due to the plant’s stem being extremely tough/Stem is very tough and green or purplish
- Whorled leaves around stem
- Prominent midrib that stands out
- Bitter foliage
- Responds well to disturbance; Direct Sunlight
- Found in old fields
3
Q
Late Boneset
A
- Native
- Opposite branching/leaf arrangement
- Cluster of white flowers at top of plant
- Lanceolate to elliptic leaves with serrated margins
- Strange serration pattern on leaves; large ridge with a small ridge nested within it; double serration
- Perennial
- Desirable structure in old field community
- Responds well to disturbance
4
Q
Spanish needles
A
- Native forb found in both uplands and lowlands
- Yellow flower
- Compound leave; Unique leave serration and leaflet coming off of the bigger leaflet; groove along the top of the rachis
- Purple glaze on stem up to the new growth; square stem w/ green/maroon lines
- Long slender seed with a fork at the end; dispersed by attaching to fur or clothing
- Responds well to disturbance; soil disturbance encourages the plant
5
Q
Pokeweed
A
- Native, Perennial herbaceous plant
- Large succulent plant
- Big leaves with red stem
- Alternate leaving
- Dense toxin (especially in the red older tissue, leaves, and stems)
- Logging slash/decks and fence rows
- Dispersed by birds and mammals
- Responds well to disturbance
- Will be on a lot of quizzes
6
Q
Narrowleaf Sunflower
A
- Native annual forb (1-2 m tall)
- Leaves alternately spiraling above and opposite above
- Very rough and narrows leaves
- Most common sunflower in SE in old fields, along forest margins and open forests
- Small yellow flower; late summer to fall
7
Q
Silver Plumegrass
A
- Native warm season grass
- Perennial (can be annual and perennial)
- White midrib; Round stem
- Grows tall
- Responds well after disturbances (especially fire); Quick cycles of fire promotes the growth of the plant; Direct Sunlight
- Very dense long hairs at the base of the leaves/nodes
- Large seedhead; Seeds dispersed by wind
- Herbicides and disking are methods used to remove the plant
8
Q
Foxtail Grasses
A
• Some Native some Non-Native - Native species is knotroot foxtail • Can be annual or perennial • Seedhead is spikelike • Animal dispersed seeds • Grows in old fields, disturbed sites, and cultivated lands
9
Q
Dichanthelium grasses
A
- Native warm season grass widespread
- Low growing perennial grass
- Wide leaves – heavily veined
- Stems grow through leaves
- Christmas tree shaped panicle
- Creates a dense mat
- Cluster of seed heads
10
Q
Yellow Woodsorrel
A
• Low growing perennial herb • Very small yellow flowers • Heart-shaped leaflets in 3s • Seed looks like a little okra - Leaves and seeds have sour taste like lemon
11
Q
St. John’s Wort
A
- Native; upper stem is slightly winged
- Opposite w/ linear, oblong leaves
- Dark spots on leaves
- Yellow flowers
- 5 pedals and 5 sepals
12
Q
Partridge Pea
A
- Native annual legume (1/2 to 2 ft tall)
- Yellow Flower
- Alternate, compound leaves
- Leaves are smooth and oblong
- Seed pods will turn black and drop seeds onto the ground
- Leaves fold up
13
Q
Camphorweed
A
- Annual forb common on moist sites and disturbed areas
- Large, toothed leaves, pubescent stems
- Very strong odor when leaves are crushed
- Windblown seeds
- Old fields
14
Q
Purple Passionflower
A
- Native rarely climbing herbaceous vine
- 3-lobed leaves; simple leaf
- Elaborate Flower; white petals and purple filaments
- Eatable fruit
15
Q
Blackgum
A
- Smooth, tear drop shaped leaves
- Green underneath
- 90 degrees branching
- Looks whorled
- Large green terminal buds
- 3 vascular bundles; Leave prominent veins and leaves can be spotted
- Might confuse with Common Persimmon (especially when we are shown them at 6 inches tall)
- Make notes about venation on the leaves
- Does not have the chambered pith in the limbs like the Common Persimmon; Diaphragm piths
- Lateral branches; top looks like it is just cut off
