Smooth-stem blazingstar (Mentzelia laevicaulis, Fl. N. Amer. 1: 535 (1840))

Family: Loasaceae

Author: (Douglas ex Hook.) Torr. & A.Gray

Bibliography: Fl. N. Amer. 1: 535 (1840)

Year: 1840

Status: accepted

Rank: species

Genus: Mentzelia

Vegetable: False

Observations: W. & WC. U.S.A.

Description

Smooth-stem blazingstar (Mentzelia laevicaulis) is a striking and unique member of the Loasaceae family, native to the western and west-central regions of the United States. This vibrant and resilient plant has captured the fascination of botanists and nature enthusiasts alike.

Characterized by its tall, slender stems, the smooth-stem blazingstar can reach impressive heights, often standing out against its surroundings. The stems are mostly smooth, lending the plant its common name. Its vivid, bright yellow flowers, composed of delicate, star-shaped blooms, are a hallmark of this species, typically appearing from midsummer to early fall. Each flower can span several inches across, creating a radiant display that is both visually stunning and ecologically significant.

Mentzelia laevicaulis thrives in a variety of habitats, ranging from arid deserts to rocky slopes and sandy soils. It demonstrates a remarkable adaptability, often flourishing in seemingly inhospitable environments where few other plants can survive. This resilience is partly due to its extensive taproot system, which allows it to access deep water reserves and nutrients.

Ecologically, the smooth-stem blazingstar plays an important role in its native habitats. Its blooms attract a host of pollinators, including bees, butterflies, and other insects, which are drawn to the abundant nectar and pollen. This interaction not only aids in the plant’s reproduction but also supports the broader ecosystem, promoting biodiversity.

The first formal botanical description of Mentzelia laevicaulis was published in “Flora of North America” in 1840, with notable contributions from Douglas ex Hooker and celebrated botanists John Torrey and Asa Gray. These early descriptions laid the foundation for subsequent studies and conservation efforts.

In cultivation, the smooth-stem blazingstar is favored for its drought tolerance and minimal maintenance requirements. It is an excellent choice for xeriscaping and naturalized garden settings, where it can add a splash of color and support local wildlife.

In summary, Mentzelia laevicaulis, or smooth-stem blazingstar, is not only a visually captivating plant but also a vital component of its native ecosystems in the western and west-central United States. This resilient species continues to inspire botanical interest and appreciation for its ecological value and striking beauty.

Common Names

Eng: blazingstar mentzelia, giant blazingstar, smooth-stem blazingstar, smoothstem blazingstar, smooth-stemmed blazing star, blazing star mentzelia, giant blazing star, great mentzelia
Fra: mentzélie à tiges lisses
En: Smooth-stem blazingstar, Giant blazingstar, Blazingstar mentzelia, Smoothstem blazingstar, Smooth-stemmed blazing star, Blazing star mentzelia, Giant blazing star, Great mentzelia
Fr: Mentzélie à tiges lisses

Synonyms

• Touterea laevicaulis ((Douglas ex Hook.) Rydb.)
• Bartonia laevicaulis (Douglas ex Hook.)
• Nuttallia laevicaulis ((Douglas ex Hook.) Greene)

Distribution

• Arizona (native)
• British Columbia (native)
• California (native)
• Colorado (native)
• Idaho (native)
• Montana (native)
• Nevada (native)
• Oregon (native)
• Utah (native)
• Washington (native)
• Wyoming (native)

Additional Images

Flower

Taken Jul 1, 1994 by Daniel Barthelemy (cc-by-nc)

Taken Aug 7, 2022 by Al Toth (cc-by-sa)

Taken Aug 31, 2022 by Madelyn Passmore (cc-by-sa)

Taken Aug 5, 2021 by Owen Owen Thompson-Lastad (cc-by-sa)

Leaf

Taken Jun 14, 2021 by Michael Finch (cc-by-sa)

Taken Jun 14, 2021 by Michael Finch (cc-by-sa)

Taken Jun 14, 2021 by Michael Finch (cc-by-sa)

© copyright of the Board of Trustees of the Royal Botanic Gardens, Kew.

© copyright of the Board of Trustees of the Royal Botanic Gardens, Kew.

Sources

• WFO (No URL)
• IPNI (No URL)
• GBIF (https://www.gbif.org/species/5331450)
• POWO (http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30243272-2)
• PlantNet (https://identify.plantnet.org/species/the-plant-list/Mentzelia laevicaulis (Douglas) Torr. & A. Gray)

Specifications

Growth habit>: Forb/herb

Growth