Keyed Out #094 — Brassica rapa 'Hakurei'

Question 1

Each flower opens four separate {petals} set crosswise over six {stamens}, four tall and two short, behind four {sepals} that stay put as the flower opens.

Accepted Answer

mustard family

Question 2

A torn leaf and a cut root both turn hot and peppery within seconds, the bite manufactured on the spot from {glucosinolates} the moment the tissue is damaged.

Accepted Answer

Brassicaceae

Question 3

The ripe pod splits open from the base upward, both walls dropping away from a persistent papery partition, and it tapers to a short seedless cone at the tip.

Accepted Answer

Brassica

Question 4

The four petals are a clear egg-yolk yellow throughout, with neither a white ground nor the dark veins that run out from the base in many of its relatives.

Accepted Answer

Brassica

Question 5

At the very top of the flowering stem the open blossoms stand level with or above the cluster of unopened buds, and the yellow is deep rather than cream.

Accepted Answer

Brassica rapa

Question 6

The upper stem leaves carry no stalk at all: each blade wraps the stem with a pair of ear-like lobes that meet behind it.

Accepted Answer

Brassica rapa