Dichotomous Key

1a: Plant with cones……. Plant 1         1b: Plant without cones             2a Leaves lanceolate or narrow and pubescent                         3a Leaves gathered near top of stem ….. Plant 3                         3b Leaves more numerous near base of stem …. Plant 2             2b Leaves ovate and pubescent …. Plant 4

Dichotomous key for the four plants.

Dichotomous key A = tree like —————————————————————— B A1 = herbaceous ——————————————————————C B = pine cones —————————————————————— pine  B1 = no pine cones———————————————————— willow  C = entire margin, simple leaf ——————————————————– sapling willow  C1 = compounding leaves ————————————————————— D D = odd pinate compound————————————– rock cress young D1 palmate compound …

Dichotomous Key for 4 Plants

Dichotomous Key for 4 Plants – Biol 190 A – Woody …………………………………………………….B A1 – Herbaceous……………………………………………….C                B – Has needles…………………………………….  Spruce                B1 – Does not have needles…………………………… Willow C – Simple leaf, margin entire………………………………..  Willow (young stems) C1 – Compound leaf………………………………………….. D                D – Leaves oddly pinnate compound …