40 CRUCIFERZ. NASTURTIUM. 
RORIPA. 
Seeds small, rounded, somewhat flattened, impressed punctate. 
N. orricrnaLe R. Br. 1. c. Glabrous; stems stoutish hollow rooting at 
the decumbent base, the branches %-5 feet long: roots all fibrous: leaves 
pinnate, leaflets rounded or elongated the terminal one largest: petals 
white, exceeding the calyx: pods divaricately spreading, 6-10 lines long, 
acute at each end, equaling the spreading pedicels, style short and thick. 
Common in brooks and wet places. Introduced from Europe. 
4 RORIPA Scop. Fl. Carn. 520. 
Annual, biennial, or perennial herbs with yellow flowers in pan- 
iculate racemes. Commonly referred to Nasturtium. Sepals 
greenish yellow, ascending or spreading. Petals short-unguicu- 
late and ascending. Pods terete or nearly so; valves thin, nearly 
or quite nerveless. Seeds small, turgid and wingless, in 2 rows in 
each cell, minutely tuberculate. | 
R.  sinuata A. 8. Hitchck. Spring Fl. Manh. 18. Nasturtium sinuatum, 
Nuit. Stems decumbent to prostrate pale green glabrous or slightly scurfy- 
pubescent: leaves narrowly oblong or oblanceolate, usually deep and regu- 
larly pinnatifid, the subequal obiong to deltoid segments entire or with 1 
or 2 teeth: pedicels mostly divaricately spreading, slender, 2-5 lines long: 
ods oblong to linear, mostly 3-5 lines long acute at each end and beaked 
y a slender style, more or less curved. Eastern Oregon and Washington 
to the plains of the Saskatchewan, Minnesota and Arkansas. 
Var. pubescens. Nasturtium sinuatum var. pubescens Watson in Gray 
Syn. Fl. i. 174. Pubescent throughout with woolly hairs: stems very slen- . 
der, decumbent: racemes lax, 4—6 inches’ long: pedicels 3-6 lines long, very 
slender: ovary oblong-obovate, pubescent: style long and slender. On 
sandy ground Sauyie’s Island Oregon, at the mouth of the Willamette 
river. But one plant was found: if not abnormal it is a good species. 
R. Columbie. Nasturtium Columbix Suksdorf in Herb. distr. 952. Law 
and spreading, pubescent throughout: leaves rather narrow, deeply and 
narrowly pinnatifid: pedicels scarcely 2 lines long: pods short-oblong, 144 
~2 lines long, densely pubescent with short and rather fine somewhat papi- 
lose hairs. Low gravelly banks of the Columbia and Snake rivers, which 
are submerged most of the year. 
R. palustris Bess. Enum. 27. wWasturtitwm palustre DC. Glabrous or © 
rarely somewhat pubescent: stems erect trom a biennial root, 6-18 inches 
high, branching: lower leaves lyrate; upper more or less deeply pinnatifid 
or merely toothed, the lobes narrowly to broadly oblong, dentate ; pods ob- 
long, turgid, usually obtuse. Oregon to the Sierra Nevadas and the At- 
antic states. 
R. Pacifica. Nasturtiwm terrestre var. occidentale Watson, inGray Syn. 
Fl. i, 148. Glabrous or the auricles of the leaves sometimes ciliate: stems 
stout, 1-3 feet high from a stout annual or biennial root: more or less 
freely branching: leaves lanceolate, the lower ones lyrate, petioled, 2-6 
inches long; the oblong to ovate segments erose-dentate: pods oblong, tur- 
gid acutish at both ends or obtuse above, 4-6 lines long, equaling the 
‘ spreading pedicels. On alluvial soil lower Columbia valley to Brit. Colum- 
bia. 
R. spheroearpa Britton, Mem. Torr. club, v.170. Nasturtium sphe- 
rocarpum, Gray Pl. Fendl.6. More or less hispid with short spreading 
hairs: stems erect, 1-3 feet high from a biennial or winter annual root: 
branched above: lower leaves lyrate with oblong or ovate, dentate seg- 
ments, upper ones lanceolate, more or less pinnatifid or irregularly den- 
tate: pods short, mostly broadly elliptical or subglobose 1-3 lines long. 
Oregon and Washington. . 
