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Xanthisma texanum var. drummondii (Drummond's sleepy daisy)
Cliffe, Harry

Xanthisma texanum var. drummondii

Xanthisma texanum DC. var. drummondii (Torr. & A. Gray) A. Gray

Drummond's Sleepy Daisy, Yellow Sleepy Daisy, Drummond's Sleepy-daisy, Drummond's Sleepydaisy

Asteraceae (Aster Family)

Synonym(s): Xanthisma texanum ssp. drummondii


USDA Native Status: L48 (N)

Yellow Sleepy Daisy has lemon-yellow flowers that do not open until about noon; hence, the name "sleepy daisy." The flower head is 1 1/2 inches across and grows at the tip of the stems. The plant grows 10-30 inches tall, with alternate leaves attached directly to the stem. The lower ones are larger, 1-2 1/2 inches long, and deeply lobed or toothed. Upper leaves are rarely toothed (248).

The variety name of this plant is named for Thomas Drummond, (ca. 1790-1835), naturalist, born in Scotland, around 1790. In 1830 he made a trip to America to collect specimens from the western and southern United States. In March, 1833, he arrived at Velasco, Texas to begin his collecting work in that area. He spent twenty-one months working the area between Galveston Island and the Edwards Plateau, especially along the Brazos, Colorado, and Guadalupe rivers. His collections were the first made in Texas that were extensively distributed among the museums and scientific institutions of the world. He collected 750 species of plants and 150 specimens of birds. Drummond had hoped to make a complete botanical survey of Texas, but he died in Havana, Cuba, in 1835, while making a collecting tour of that island.


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Notes: Up to about 30 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec


USA: AZ , NM , OK , TX
Native Habitat: Prairie, Plains, Meadows, Pastures, Savannas.

Growing Conditions

Water Use: Low
Light Requirement: Part Shade
Soil Moisture: Dry


Use Ornamental: Pocket prairie, Rock gardens, Rocky hillside, Wildflower meadow.
Conspicuous Flowers: yes


Propagation Material: Seeds


Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.

Search More Titles in Bibliography

Additional resources

USDA: Find Xanthisma texanum var. drummondii in USDA Plants
FNA: Find Xanthisma texanum var. drummondii in the Flora of North America (if available)
Google: Search Google for Xanthisma texanum var. drummondii


Record Modified: 2023-06-23
Research By: Joseph A. Marcus

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