Al Schneider's Rocky Mountains Plant Descriptions

Star Gentian
Swertia perennis
Gentian family (Gentianaceae)

Star Gentian (Swertia perennis is not commonly noticed because it frequently grows among grasses and other tall plants in wetlands, and because its flowers are not vibrant. But Star Gentian is well worth looking for. Its star-shaped flowers are a very unusual and lovely dusky purple with darker purple streaks and tinges of yellow. The plant grows straight on single sturdy stems. When you find one plant, you will almost always find several immediately near, for new plants most often sprout from roots of older plants. The plant is often found in the company of Elephant Heads, King's , Rose , and other plants that like wet roots.

Emanuel Sweert was a 16th century Dutch botanist and "perennis" is Latin for "through the year, ." Swertia perennis is circumboreal and was first collected in Bavaria in the mid-1700s. It was named by Linnaeus in 1753.


©2004 Al Schneider

Description

plant with single stem from a short rootstock. Stems to 14" tall, smooth. Leaves , mostly with . Stem leaves , or . Flowers clustered in upper axils of the leaves or , on of varying lengths. to 1/3" long, deeply 5-parted. blue-grey, sometimes streaked or spotted. a .

Field Marks

Wetlands straight slender plant topped with clusters of wide-open blue-grey, star-shaped flowers.

© Al Schneider

capsule -- a type of simple, dry fruit produced by many species of flowering plants. In most cases the capsule splits apart to release seeds.

A perennial plant lives and blooms for many years.

pedicel -- The stem of a single flower.

corolla -- The name for all the petals of a flower taken together.

Bracts are modified leaves associated with a flower.

basal -- at the base, situated or attached at the base.

calyx -- the sepals of a flower, typically forming a whorl that encloses the petals and forms a protective layer around a flower in bud.

fruit -- any seed-bearing structure in flowering plants. It is formed from the ovary after flowering.

In an opposite leaf arrangement the leaves come in pairs with one leaf on each side of a stem.

sessile -- attached without a stalk. For example, a leaf that clasps the stalk. A petiolate leaf has a stalk.

petiole -- the stalk of a leaf.

canopy -- The foliage of a tree; the crown. Also the upper layer of a forest.

alternate -- leaves alternate along the main stem and are attached singly.

glabrous -- smooth, glossy, having no bristles or hair-like structures. Bald.