. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. I, Neobeckia aquatica (Eatonj Britton. Lake Water-cress. River-cress. Fig. 2036. Cochlearia aquatica Eaton, Man. Ed. 5, 181. 1829. Nasturtium nalans var americanum A. Gray, Ann. Lye. N. Y. 3:223. 1836. Nasturtium lacustre A. Gray, Gen. lU. i : 132. 1848. Rorifa americana Britton, Mem. Torn Club 5: 169. 1894. Neobeckia aquatica Greene, Pittonia 3: 95. 1896. Radicula aq
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. I, Neobeckia aquatica (Eatonj Britton. Lake Water-cress. River-cress. Fig. 2036. Cochlearia aquatica Eaton, Man. Ed. 5, 181. 1829. Nasturtium nalans var americanum A. Gray, Ann. Lye. N. Y. 3:223. 1836. Nasturtium lacustre A. Gray, Gen. lU. i : 132. 1848. Rorifa americana Britton, Mem. Torn Club 5: 169. 1894. Neobeckia aquatica Greene, Pittonia 3: 95. 1896. Radicula aquatica Robinson, Rhodora 10: 32. 1908. Branching, l°-2° long. Immersed leaves 2'-6' long, pinnately dissected into numerous filiform divisions; emersed leaves lanceolate to oblong, obtuse or acute, i'-3' long, entire, serrate or lobed, readily detached from the stem; pedicels j"-4" long, slender, spreading or ascending; petals longer than the sepals; style about l" long; pods 2" long. In lakes and slow str em New York, Minnes Local. Summer. 17. LEPIDIUM [Tourn.] L. Sp. PI. 643. 1753. Erect, or rarely diffuse, glabrous or pubescent herbs, with pinnatifid lobed or entire leaves and racemose white or whitish flowers. Pubescence, when present, of simple hairs. Stamens often fewer than 6. Petals short, sometimes none. Silicles orbicular tD oblong or obovate, flattened contrary to the partition, mostly emarginate, winged or winglecs; valves keeled, dehiscent. Seeds solitary in each cell, pendulous, flattened; cotyledons incumbent or rarely accumbent. [Greek, a little scale, from the flat scale-like pods.] About 65 species, widely distributed. In addition to the following, about i6 others occur in western North America. Called indilTerently Cress, Pepperwort or Pepper-grass. Type species: Lepidium latifolium L. Stem-leaves clasping by an auriculate base. Pods broadly ovate, winged; annual or biennial. i. Pods wingless, broader than long ; perennial.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
