Tag: dichotomous key

I wasn’t sure which dichotomous key would be easier to follow, so I made two with slight differences. They are separated by the line in the middle of my screenshot. Does one make more sense than the other?

Dichotomous Key – Peri Hoshock A- Has needles -> Plant 1 A’ – Lacks Needles -> B B- Has Petals -> C B’ – Lacks Petals -> Plant 4 C- has Purple Petaled Flowers -> Plant 3 C’ – White Petaled Flowers -> Plant 2

A. Plant has cones – Plant 1 A’. Plant has no cones – B B. Plant has flowers with petals – C B’. Plant has flowers without petals – Plant 4 C. Petals are purple – Plant 3 C’. Petals are white – Plant 2

A. Plant produces cones– Plant 1 A1. Plant does not produce cones– B B. Plant is staminate– Plant 4 B1. Plant also produces pistils– C C. Plant produces purple petals/ flowers– Plant 3 C1. Plant produces white petals/ flowers– Plant 4

A. With cones- plant 1 A’. Without cones- see B          B. flowers with white petals- plant 2          B’. flowers without white petals- see C.               C. flowers with violet hues petals- plant 3               C’. flowers without violet hued petals- plant 4

This is my very first Dichotomous Key. Hopefully this makes sense!  1.Glabrous Stem:  A. Needles, stomatiferous on all sides, cone……… Plant 1 B. White petal, pubescent peduncle………………..Plant 2 2. Pubescent Stem:  C. Violet petal, whorled leaf arrangement…………..Plant 3 D. Pubescent leaves with distinct apex……………..Plant 4

By: Hattie Casserly A. Plants with flowers: Common yarrow Achillea millefolium L. (Asteraceae). Lavender, Lavandula angustifolia L. (Lamiaceae). Moonshine yarrow, Achillea clypeolata x taygetea’ A. (Asteraceae). B. Plants without flowers: Rosemary, Rosmarinus officinalis L. (Lamiaceae). Coast live Oak, Quercus agrifolia N. (Fagaceae). Ivy, Hedera helix L. (Araliaceae). 2A. Flowering plants in …