32 
CRUC1FERJE. (MUSTARD OR RADISH FAMILY.) 
Tribe I. ARABIDEiE. The Cress Tribe. 
1. NASTURTIUM, R. Br. Cress. 
Pod nearly terete, linear-oblong and curved upwards, or short 
like a silicle. Seeds small, irregularly 2-rowed in each cell, mar- 
ginless. — Aquatic or marsh plants, with yellow or white flowers, 
and pinnate or pinnatilid leaves. (Name from Nasvs tortus , a 
convulsed nose, alluding to the effect of its pungent qualities.) 
* Introduced : pod linear : flower white. 
1. NT. officinale, R. Br. (Water Cress.) Stems rooting, 
smooth; leaves pinnate, with 3-5 rounded leaflets; petals conspicu¬ 
ous, longer than the calyx. . -— Brooks and ditches, escaped from 
cultivation. Finely naturalized at Niagara Falls on the Canada side. 
* * Indigenous : pods oblong or ovoid : flowers yellow or yellowish . 
2. NT. palustre, DC. (Marsh Cress.) Stem upright, smoot i 
or hairy ; leaves pinnatifid and toothed, the lower lyre-shaped , P et 
als (yellowish) as long as the calyx; pods ovoid-oblong varying 
ovoid, obtuse, turgid, tipped icith a very short style , equalling or ra a 
shorter than the spreading pedicels. 1J.. — Wet banks of streams, com 
mon. June - Sept. — Plant coarse, P — 2° high, with very small flow 
ers. — The plant of the Northern States is often hairy, and has shorter 
pods than the European, nor does it agree with N. amphibium, 0 
which it has been taken. 
3. NT. Itispidum, DC. (Hairy Cress.) Upright, rough 
hairy; leaves runcinate-pinnatifld and toothed ; petals (yellow u 
hardly as long as the calyx ; pods ( minute) ovoid, scarcely half as 
as the somewhat spreading pedicels , tipped with a very short style . jT 
— Wet places, Middletown, Connecticut, and Hudson River near tlC 
Highlands. Barratt .—Apparently connected by intermediate vane 
ties with the foregoing. 
4. NT. nutans DC. (Floating Cress.) Aquatic, smooth; 
immersed leaves pinnate , with numerous and crowded capillary d*' 13 
ions ; emersed leaves oblong, entire or serrate, sometimes pinnatih » 
petals (white) longer than the calyx ; pods globose-obovatc , tipped 
a slender style. 1J.. — In ponds and rivers, Oneida Lake and fet. La' 
rence River, New York. Ohio and Michigan. July. . g 
N. sylvestre of Europe, with linear pods and yellow blossoms, 
said to be naturalized on the Delaware near Philadelphia. 
2. IODANTHIJS, Torr. & Gray. False Rocket- 
Pod linear, elongated, terete. Seeds in a single row in each 
cell, margined. Style thick : stigma capitate. Claws of the vio- 
