Guillenia flavescens
Encyclopedia
Guillenia flavescens is a species of mustard plant
known by the common name yellow mustard, but it is not the only species known by that name. Sinapis alba
is probably the plant more widely known as yellow mustard. G. flavescens is a thin-stemmed annual herb growing large, lobed or toothed leaves up to 22 centimeters long around its base, and smaller, less toothed leaves along its gray-pink to brown stem. At intervals along the upper stem appear cream, yellowish, or very pale purple flowers, each somewhat cuboid
in shape and about a centimeter long. The tips of the petals around the mouth are curled, flared, or clawlike. The fruit is a thin silique
up to 9 centimeters long. This species is endemic to California
, where it grows in the valleys and mountains surrounding the San Francisco Bay Area
.
Mustard plant
Mustards are several plant species in the genera Brassica and Sinapis whose small mustard seeds are used as a spice and, by grinding and mixing them with water, vinegar or other liquids, are turned into the condiment known as mustard or prepared mustard...
known by the common name yellow mustard, but it is not the only species known by that name. Sinapis alba
White Mustard
White mustard is an annual plant of the family Brassicaceae. It is sometimes also referred to as Brassica alba or B. hirta...
is probably the plant more widely known as yellow mustard. G. flavescens is a thin-stemmed annual herb growing large, lobed or toothed leaves up to 22 centimeters long around its base, and smaller, less toothed leaves along its gray-pink to brown stem. At intervals along the upper stem appear cream, yellowish, or very pale purple flowers, each somewhat cuboid
Cuboid
In geometry, a cuboid is a solid figure bounded by six faces, forming a convex polyhedron. There are two competing definitions of a cuboid in mathematical literature...
in shape and about a centimeter long. The tips of the petals around the mouth are curled, flared, or clawlike. The fruit is a thin silique
Silique
A silique or siliqua is a fruit of 2 fused carpels with the length being more than three times the width. The outer walls of the ovary usually separate when ripe, leaving a persistent partition...
up to 9 centimeters long. This species is endemic to California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
, where it grows in the valleys and mountains surrounding the San Francisco Bay Area
San Francisco Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a populated region that surrounds the San Francisco and San Pablo estuaries in Northern California. The region encompasses metropolitan areas of San Francisco, Oakland, and San Jose, along with smaller urban and rural areas...
.