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The fern, known as Tmesipteris oblanceolate, belongs to a primordial group of plants that evolved long before the dinosaurs set foot on the earth.

Stems low, from a woody base; leaves linear to oblanceolate, or the lower obovate, entire, the stipules leaf-like or small or none; flowers solitary, nodding, 2´´ long, white.

Leaves.—Two; oval-elliptical to narrowly oblanceolate; four to fifteen inches long; blotched with brown.

Sonchus oleraceus L. Flowers pale yellow; achenes reddish brown, linear, oblanceolate, 3 mm. long, flattened extremities blunt, 5 uneven wrinkled ridges on each side.

Leaves oblanceolate, rather regularly pinnatifid, the terminal segment about the same size as the lateral ones Sand Rocket, Diplotaxis muralis. 20b.