6. Radicula Hispida (Desv.) Britton. Hispid Yellow-Cress

Fig. 2031

Brachylobus hispidus Desv. Journ. Bot. 3: 183. 1814. Nasturtium hispidum DC. Syst. 2: 201. 1821. Nasturtium palustre var. hispidum A. Gray, Man. Ed. 2, 30. 1856. Roripa hispida Britton, Mem. Torr. Club 5: 169. 1894. Radicula hispida Britton, Torreya 6: 30. 1906. R. palustris hispida Robinson, Rhodora 10: 32. 1908.

Resembling the preceding species, but often stouter, sometimes 4o high and with lower leaves 10' long, the stem, branches, petioles and veins of the lower surfaces of the_ leaves hirsute with spreading hairs. Leaves lyrate-pinnatifid; pedicels slender, spreading, about 3" long, longer than the globose or ovoid pod, which is 1-2 times as long as thick.

In wet places, New Brunswick to Alaska, British Columbia, Florida and New Mexico. Europe. Summer.

Radicula curvisiliqua (Hook.) Greene, admitted into our first edition as reported from Nebraska is here omitted; it is not definitely known to range east of Wyoming.

7. Radicula Sessiliflòra ( Nutt.) Greene. Sessile-Flowered Cress

Fig. 2032

Nasturtium sessiliflorum Nutt.; T. & G. Fl. N. A. I: 73. 1838.

Roripa sessiliflora A. S. Hitchcock, Spring Fl. Manhattan 18. 1894.

Radicula sessiliflora Greene, Leaflets 1: 113. 1905.

Annual or biennial, erect, glabrous, 8-20' high, sparingly branched above, the branches ascending. Leaves petioled, the lower 3'-4' long, obovate or oblong, obtuse, crenate, lobed or pinnatifid, with obtuse lobes; flowers yellow, 1" broad, nearly sessile; pods very slightly pedicelled, spreading or ascending, 3"-6" long, 1" broad, narrowly oblong; style very short; seeds minute, mostly in 2 rows in each cell.

Wet grounds, Virginia to Illinois, Iowa, Nebraska, Arkansas, Florida and Texas. April-June.