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Thomas, Roy Dale (1936-2022)

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Sphenoclea zeylandica

R. Dale Thomas
Cyperus blepharoleptos Steudel

R. Dale Thomas and Nelson Rich
Amaranthus albus L.

R. Dale Thomas
Galium aparine L.

R. Dale Thomas
Lysimachia lanceolata Walter

R. Dale Thomas
Avicennia germinans (L.) Stearn

R. Dale Thomas
Fraxinus americana L.

R. Dale Thomas
Galium aparine L.

R. Dale Thomas
Limonium carolinianum Britton

R. Dale Thomas
Lysimachia lanceolata Walter

R. Dale Thomas
Polygonum cristatum Engelm. & A. Gray

R. Dale Thomas
Verbena bonariensis L.

R. Dale Thomas
Ilex opaca Aiton

R. Dale Thomas
Phyla nodiflora (L.) Greene

R. Dale Thomas
Plantago aristata Michx.

R. Dale Thomas
Epifagus virginiana (L.) W. Bartram

R. Dale Thomas and Dendrology Class
Acer negundo L.

R. Dale Thomas and Dendrology Class, Northeast LA U
Forestiera acuminata (Michx.) Poir.

R. Dale Thomas and Systematic Botany class
Richardia scabra L.

R. Dale Thomas
Paederia foetida L.

R. Dale Thomas and John McCoy
Lantana montevidensis Briq.

R. D. Thomas
Corydalis micrantha (Engelm. ex A. Gray) A. Gray

R. Dale Thomas
Phyla nodiflora (L.) Greene

R. Dale Thomas
Plantago patagonica Jacq.

R. Dale Thomas and Dorris
Lantana urticoides Hayek

R. Thomas and Charles M. Allen