Xanthisma texanum ssp. drummondii
Xanthisma texanum DC. ssp. drummondii (Torr. & A. Gray) Semple
Drummond's sleepydaisy, Sleepy-Daisy
Asteraceae (Aster Family)
Synonym(s): Xanthisma texanum var. drummondii
USDA Symbol: XATED2
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 subspecies 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
Plant CharacteristicsDuration: Annual
Flower: Flowers 2 inches long
Size Class: 1-3 ft.
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec
Growing ConditionsWater Use: Low
Light Requirement: Part Shade
Soil Moisture: Dry
Soil Description: Sandy Sandy Loam Medium Loam
BenefitUse Ornamental: Pocket prairie, Rock gardens, Rocky hillside, Wildflower meadow
Conspicuous Flowers: yes
PropagationPropagation Material: Seeds
Wildflower Center Seed BankLBJWC-JHS-4 Collected 2009-06-25 in Llano County by Lady Bird Johnson Wildflower Center
BibliographyBibref 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.
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Additional resourcesUSDA: Find Xanthisma texanum ssp. drummondii in USDA Plants
FNA: Find Xanthisma texanum ssp. drummondii in the Flora of North America (if available)
Google: Search Google for Xanthisma texanum ssp. drummondii
MetadataRecord Modified: 2008-09-15
Research By: TWC Staff