Species

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Total: 709

species valid

Thinnfeldia lanceolata Knowlt. Bull. U.S. Geol. Surv., 1893, (105): 49. Jun 1894

species valid

Thinnfeldia polymorpha (Lesq.) Knowlt. Proc. Biol. Soc. Washington, 7(21): 153. Jul 1892

species valid

Thinnfeldia subintegrifolia (Lesq.) Knowlt. Bull. U.S. Geol. Surv., (152): 228. Oct 1898

species valid

Tilia weedii Knowlt. Bull. Torrey Bot. Club, 29(12): 706. 30 Dec 1902

species valid

Trapa americana Knowlt. Rep. (Annual) U.S. Geol. Surv., 18, (3): 733. Nov 1898

species valid

Trapa cuneata Knowlt. Bull. U.S. Geol. Surv., (163): 64. Apr 1900

species valid

Trapa occidentalis Knowlt. Rep. (Annual) U.S. Geol. Surv., 18, (3): 734. Nov 1898

species valid

Tumion bonseri Knowlt. Profess. Pap. U.S. Geol. Surv., 140(A): 25. 19 Feb 1926

species valid

Tumion densifolium (Dawson) Knowlt. Bull. U.S. Geol. Surv., (152): 234. Oct 1898

species valid

Tumion dicksonioides (Dawson) Knowlt. Bull. U.S. Geol. Surv., (152): 23. Oct 1898

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