glossary

Question 1

Breathing root or pneumatophore, horizontal root forms a loop that emerges at low tide

Answer 1

knee root

Question 2

lip-shaped

Answer 2

labelliform

Question 3

lowest petal of an orchid, usually larger and different in shape from two lateral petals

Answer 3

labellum

Question 4

irregularly lobed at margin as if torn (leaf margin)

Answer 4

lacerate

Question 5

cut into slender lobes or drawn-out teeth (leaf margin)

Answer 5

laciniate

Question 6

expanded part or blade of leaves or petals

Answer 6

lamina

Question 7

with long dense curly interwoven matted woolly hairs

Answer 7

lanate

Question 8

narrowly ovate and tapering to a point at the apex (leaf shape)

Answer 8

lanceolate

Question 9

net-veined, when the smallest veins of a leaf are interconnected like the meshes of a net

Answer 9

reticulate

Question 10

notched, with a rounded indentation (usually said of an apex)

Answer 10

retuse

Question 11

rolled or curled over backwards, toward abaxial surface

Answer 11

revolute (opp: involute)

Question 12

underground stem, distinguished from root by its nodes, buds, or scale-like leaves

Answer 12

rhizome

Question 13

the place where the root changes into the stem at ground level;
sometimes the hairy or bracteate apical part of the perennial rootstock where the annual shoots are burned or grazed off

Answer 13

root-crown