Al Schneider's Rocky Mountains Plant Descriptions

Woolly Cinquefoil
Potentilla hippiana
Rose family (Rosaceae)

Wooly Cinquefoil (Potentilla hippiana) likes dry sites, its flower stems are from a few inches to twenty inches tall, and its leaves are green on top and silvery hairy on the back. Leaves often curl, and, very important in identifying this species, its leaves are , arranged ladder-like rather than (as in the also very common cinquefoil, P. gracilis). Wooly Cinquefoil is a very common Potentilla in the mountains of Colorado.

Johann Georg Lehmann (1792-1860) named this species in 1827 from a specimen collected by Edwin James in 1820 near the "sources of the Platte." Carl Hippio was a colleague of Lehmann.


©2012 Jerry Oldenettel

Description

, variably from (woody base of non-woody ), the stems reclining or erect to 2' long. from 1 to 7" long, with 7-11 , to or , or less than half way to . Usually very hairy on one or both surfaces. Flowers several to numerous, showy. Petals yellow a bit less than 1/3" long. are , several to numerous.

Field Marks

Lanky plant with bicolored leaves, bright yellow flowers, and arranged .

© Al Schneider

oblanceolate -- top wider than bottom

A leaf is compound when multiple leaflets are on the same stem.

A perennial plant lives and blooms for many years.

midrib -- The central and most prominent vein of a leaf or leaf-like thing.

achene -- a type of simple dry fruit produced by many species of flowering plants. For example, a rose hip holds a few achenes.

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

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

basal leaves -- a leaf that grows lowest on the stem of a plant.

serrate -- toothed with asymmetrical teeth pointing forward; like the cutting edge of a saw.

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

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

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

elliptic -- Oval, with no point or a very short point.

palmate -- Consisting of leaflets or lobes radiating from the base of the leaf.

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

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

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