NEW OR NOTEWORTHY SPECIES. 97 
the Mississippi seems clearly distinct from that Rocky Moun- 
tain and Pacific American type which is the original of 
Nuttall’s Nasturtium sinuatum. 
RonrPA cuRviPES. Low, slender, diffusely branched, the 
branches in maturity ending in several elongated racemes 
which are unilateral by the decurved pedicels of the very 
small pods: herbage nearly glabrous: leaves from lyrate- 
pinnatifid to ovate-lanceolate and merely dentate: flowers 
minute, yellow in all parts, the petals slightly surpassing 
the sepals; stamens not exserted: pods ovate-acuminate or 
ovate-falcate, scarcely 2 lines long, tipped by a short style, 
few-seeded, often torulose by one or more manifest con- 
Strictions. 
Rather frequent in the mountains of southern Colorado, 
at middle elevations, occurring along streamlets chiefly. An 
excellent species by the marked character of the pods, and 
their arrangement in long one-sided racemes. 
RoRrPA MuLTIcAULIS. Slender and glabrous, the herbage 
dark-green or purplish: stems very numerous, ascending or 
More depressed and forming a low bushy mass 1$ or 2 feet 
broad: lowest leaves pinnately parted and the oblong-lance- 
olate segments dentate, the upper lanceolate and coarsely 
dentate: flowers minute, yellow: pods linear, straight, 
abruptly acute, 4 or 5 lines long, suberect on very short 
pedicels, usually of a dull dark purple, slightly obcom- 
Pressed: seeds minute, the reticulation of the testa ex- 
tremely minute. 
Common on moist banks of the San Joaquin River, thence 
Southward perhaps to Lower California. On account of the 
Somewhat obcompressed siliques I long ago placed this as a 
variety of the N. Californian R. occrpentaLis (Nasturtium 
occidentale, Greene), notwithstanding its several marked 
Peculiarities of aspect; but even the pods, as well as the 
mode of growth, are different, and there is a very strong 
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