Al Schneider's Rocky Mountains Plant Descriptions

Northern Sweetvetch
Hedysarum boreale
Pea family (Fabaceae)

The young roots of Sweetvetch (with a mild licorice taste) are eaten by humans and grizzly bears. The plant is also known as Plains Sweetbroom suggesting its use to sweep out dwelling, leaving a fresh smell behind. The plant is highly variable in form, particularly in the amount of and flower size. The Pea Family has more than 17,000 species world-wide.


©2010 Matt Lavin

Description

Reclining to erect , 2-3' tall, with leafy, gray-hairy stems. Flowers are pink-purple, arranged in elongated . petal longer than petals. Leaves are , divided into 7-13 . Leaves often hairy, especially on lower surface, at times . Pair of brown, leathery found at base of leaf. are flattened, wrinkled pods (loments) with constrictions around individual seeds.

Field Marks

Purple flowers, compound leaves, and pods with prominent loments.

© Al Schneider

A perennial plant lives and blooms for many years.

A herb is a plant whose stems die back to the ground in the winter.

pubescent -- downy; covered with short, soft, erect hairs.

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

Glands are plant structures that secrete liquids, salts or other substances. Glands often appear as hairs with a drop of liquid at the end.

In a pea flower the two bottom petals are fused together forming a boat-like structure called the keel. The glumes of grasses may have a sharp projecting ridge like the keel of a boat.

pinnate -- A compound leaf with two rows of leaflets.

stipule -- A leaf-like structure that occurs where the leaf joins the stem; stipules often occur in pairs.

A raceme is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along its axis.

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

oblong -- Having an elongated form with somewhat parallel sides. Rectangular.

leaflets -- Each little leaf-like thing in a compound leaf is a leaflet.

wing -- Pea flowers have wings.