Ranunculus stenolobus Rydb.

  • Authority

    New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.

  • Family

    Ranunculaceae

  • Scientific Name

    Ranunculus stenolobus Rydb.

  • Description

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    Species Description - Perennial with a cluster of fibrous roots, perfectly glabrous: stems 1-3 from the same clump, 1—2 dm. high, usually branched: basal leaves and lower cauline petioled; petioles 4—10 cm. long; blades three times ternately dissected into almost linear segments, which are 6—15 mm. long and 1—3 mm. wide, usually somewhat narrowed at the base; the primary divisions distinctly pctiolulate: sepals oval, 4-5 mm. long: petals obovate, 7-8 (rarely 9-11) mm. long: head of achene spherical or slightly oblong, about 6 mm. broad: achenes turgid, glabrous: style slender.

  • Discussion

    This species is somewhat intermediate between R. adoneus and R. triternatus, but the stem is more elongated and branched. Some of the specimens cited below have been referred to the former, but in that plant the stem is usually simple, the petals over 1 cm. long, cuneate-flabelliform and overlapping each other, the lobes of the leaves narrower and not narrowed downward. In the leaf-form and flowers it resembles more R. triternatus, but that grows in big clumps with numerous stems, and the segments are more decidedly petiolulate.

    Wyoming : Headwaters of Cliff Creek, 1900, C. C. Curtis (type in herb. N. Y. Bot. Card.).

    Utah: Alta, Wahsatch Mts., 1879, M.E. Jones, 1104.; Wahsatch Mt., 1869, 5. Watson, 30.

  • Distribution

    Wyoming: Headwaters of Cliff Creek, Utah: Alta, Wahsatch Mts.

    Wyoming United States of America North America| Utah United States of America North America|