Al Schneider's Rocky Mountains Plant Descriptions

Dwarf Clover
Trifolium nanum
Pea family (Fabaceae)

Dwarf Clover (Trifolium nanum) hugs the ground with numerous, tiny, three-parted leaves in a tight mat, but it has relatively few flowers, which are, however, large for the size of the plant and always in attractive masses. Plants might, after many years, grow to about a foot in diameter. "Nanum" is Greek for "dwarf." In 1820 Edwin James collected this plant on Pikes Peak; John Torrey, the most eminent 19th century botanist, named it in 1824.


©2009 Bryant Olsen

Description

, , about 1" tall, from a (woody base of non-woody ) and , the stems obscured by shingled and leaf bases. to almost an inch long. 3, from 1/8 to nearly 1/2" long, to , or some hairs on lower surface, folded or flat. Heads 1-4 flowered, , or on short . Flowers 2/3 to 1" long, pale purple, yellow, white. a pod with 1-4 seeds.

Field Marks

A dwarf, clover that hugs the ground with many leaves in a tight cluster with few, but large flowers.

© Al Schneider

terminal -- Located at the end (the tip or the apex).

An entire leaf has smooth edges. Not toothed or lobed.

A peduncle is a common stalk of a cluster of flowers.

A perennial plant lives and blooms for many years.

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

caespitose -- Grass (or plants) growing in small dense clumps or tufts.

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

taproot -- The primary decending root of a plant.

Like the teeth on a saw, leaves and other surfaces can have toothed edges.

acaulescent -- a plant that has no apparent stem, or at least none visible above ground.

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

petiole -- the stalk of a leaf.

caudex -- The woody stem base of some herbaceous perennials.

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

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

alpine -- above the tree line. Thin soil, rocks, short growing season, frost, winter snow.