Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Coursetia glandulosa, Rosary Babybonnets

Rosary Babybonnets flowers are white and light pink with yellow centers as shown in the photograph; Note adult aphid (Aphidoidea) on flower. Coursetia glandulosa Rosary Babybonnets bloom from March to April and set fruit shortly thereafter. The fruit is a narrow-constricted pod. Coursetia glandulosa Rosary Babybonnets leaves are green and pinnately compound. Plants preferred habitats include washes, canyons and dry rocky slopes. Coursetia glandulosa Rosary Babybonnets is rare in the United States; found only in central, southern and southwestern parts of Arizona. It is also native to Baja California south into northern and central Mexico. Coursetia glandulosa

Scientific Name: Coursetia glandulosa
Common Name: Rosary Babybonnets

Also Called: Rosary Baby-Bonnets, Baby Bonnets, Coursetia (ES: Sámota, Samo Prieto, Chino, Cousamo, Cousano, (Tepe) Chipile).

Family: Fabaceae or Leguminosae Family.

Synonyms: (Coursetia microphylla)

Status: Native

Duration: Perennial

Size: Up to 30 feet (9.1 m), general less.

Growth Form: Rosary Babybonnets are deciduous spreading shrubs without spines or thorns; slightly rough bark.

Leaves: Rosary Babybonnets leaves are green and pinnately compound.

Flower Color: Rosary Babybonnets flowers are white and pink with yellow centers; the fruit is a narrow-constricted pod.

Flowering Season: March to April.

Elevation: Between 2,000 and 4,000 feet (610 - 1,219 m).

Habitat Preferences: In washes, canyons and dry rocky slopes.

Recorded Range: Rosary Babybonnets is rare in the United States where it is found only in central, southern and southwestern parts of Arizona. It is also native to Baja California south into northern and central Mexico.

North America & US County Distribution Map for Coursetia glandulosa.

North America species range map for Rosary Babybonnets, Coursetia glandulosa:

North America species range map for Rosary Babybonnets, Coursetia glandulosa:
Click image for full size map.

U.S. Weed Information: Unknown
Invasive/Noxious Weed Information: Unknown
Wetland Indicator: Unknown
Threatened/Endangered Information: Unknown

Genus Information: In North America, USDA Plants Database lists 4 species and 6 accepted taxa overall for Coursetia. Worldwide, World Flora Online includes 66 accepted species names and a further 51 scientific names of infraspecific rank for the genus.

The genus Coursetia was published in 1825 by Augustin Pyramus de Candolle, (1778-1841)

In the Southwestern United States: Arizona has 2 species of genus, California, Nevada, New Mexico and Utah have 0 species and Texas has 1 species. Data approximate, subject to revision.

Comments: The stems of Rosary Babybonnets are sometimes heavily encrusted with an orange-colored resin, as result of and infestation by an insect of the genus Tachardia. The large genus Coursetia consists mostly of shrubs and trees that are native to parts of the Southwestern United States south through Mexico, Central and South America.

Importance to Wildlife, Birds and Livestock
Rosary Babybonnets, Coursetia glandulosa has attractive flowers, the flowers, their seeds and plants may be visited by hummingbirds and/or small mammals including rodents and granivorous birds in search of food, nectar and protection through cover.

Beneficial Value to Butterflies, Honey Bees and Insects
Rosary Babybonnets, Coursetia glandulosa has attractive flowers, the flowers and their plants may be visited or used by butterflies, moths, flies, honeybees, native bees and other insects in search of nectar, food or shelter and protection.

Rosary Babybonnets, Coursetia glandulosa is an adult food source for;
Cincta rothschildia, Rothschildia cincta.
Learn more at Butterflies and Moths of North America, (BAMONA).

Etymology:
The genus “Coursetia” is named for French botanist Georges Louis Marie Dumont de Courset (1746-1824).

The genus Coursetia was published in 1825 by Augustin Pyramus de Candolle, (1778-1841)

The species epithet glandulosa (glandulo'sa:) means provided with or having glands, a reference to secretory structures somewhere on the plant.

The species taxon Coursetia glandulosa was named in 1861 by Asa Gray, (1810-1888).

Ethnobotany - Native American Ethnobotany; University of Michigan - Dearborn
Rosary Babybonnets, Coursetia glandulosa is used for such purposes as described below.
  • Papago Other, Fasteners; Transparent, yellowish-brown gum mixed with adobe and used to make jars of syrup air tight.

  • See complete listing of ethno-botanical uses at Native American Ethnobotany, University of Michigan, Dearborn.

    Date Profile Completed: 08/18/2015, updated 01/18/2022
    References and additional information: Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California as Coursetia microphylla.
    Plants.USDA.gov; Department of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search; accessed 01/19/2022.
    https://plants.usda.gov/home/basicSearchResults?resultId=3df2e988-63f5-4905-b92e-4a5c45eb9f39
    https://plants.usda.gov/home/plantProfile?symbol=COGL8
    World Flora Online; A Project of the World Flora Online Consortium; An Online Flora of All Known Plants - (accessed 01/19/2022)
    http://www.worldfloraonline.org/search?query=coursetia&view=&limit=24&start=0&sort=&facet=taxon.family_ss%3aFabaceae
    Native Plant Information Network, NPIN. Published on the Internet http://www.wildflower.org/plants/; accessed 01/19/2022. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
    https://www.wildflower.org/plants/result.php?id_plant=COGL8
    Wikipedia contributors. "Coursetia." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 3 Dec. 2021. Web. 18 Jan. 2022.
    Lavin 1988, Kearney and Peebles 1969; Editor: L.Crumbacher, 2011; from SEINet Field Guide, on-line; accessed 01/19/2022.
    https://swbiodiversity.org/seinet/taxa/index.php?taxon=1035&clid=3469
    Seiler, John, Peterson, John, North American species range map courtesy of Virginia Tech, Dept. of Forest Resources & Environmental Conservation
    http://dendro.cnre.vt.edu/dendrology/
    Michael J. Plagens; Arizonensis; Field Guide; Sonoran Desert Flora; Fabaceae, Coursetia glandulosa; accessed 01/18/2022.
    http://www.arizonensis.org/sonoran/fieldguide/plantae/coursetia.html
    SEINet synonyms, scientific names, geographic locations, general information.
    http://swbiodiversity.org/seinet/
    Etymology: Michael L. Charters California Plant Names: Latin and Greek Meanings and Derivations; A Dictionary of Botanical and Biographical Etymology - (accessed 01/19/2022)
    http://www.calflora.net/botanicalnames/pageG.html
    IPNI (2020). International Plant Names Index. Published on the Internet http://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. [Retrieved 19 January 2022].
    https://www.ipni.org/?q=coursetia
    https://www.ipni.org/n/487352-1