DENDROLOGY

TREE DISEASES AND PESTS

COMMON TREE PESTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What shape are the leaves on a velvetleaf plant?
A
Diamond
B
Oval
C
Square
D
Heart
Explanation: 

Detailed explanation-1: -The plant quickly grows to produce larger and larger alternate, palmate, heart-shaped leaves that taper to a point (acuminate) with prominent veins. Both sides of the leaves and the petioles are densely hairy.

Detailed explanation-2: -The capsules are light green when young and become brown to black as they mature. Mature capsules may remain on dead stems throughout the winter. Each capsule contains 15–45 grey-brown, kidney to heart-shaped seeds. Each seed is 0.04–0.06 inch thick and 0.08–0.11 inch long and wide.

Detailed explanation-3: -Velvetleaf (Abutilon theophrasti) is easy to identify by its large heart-shaped leaves and small bright yellow flowers. According to the USDA Natural Resources Conservation Service, it is an annual weed that grows in all of the United States and is considered a noxious weed in some states.

Detailed explanation-4: -Velvetleaf originated in either China or India. Its use as a fiber crop in China dates to 2000 B.C. or earlier; it is still grown there for fiber which is used to make ropes, coarse cloth, nets, paper, and caulk for boats (8).

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