10 [66| BOTANY. 
SIsYMBRIUM OFFICINALE, Scop.; Torr. & Gray, Fl. 1, p. 91. Near Benicia, April 24. Doubt- 
less introduced. . 
SisyMBRIUM CANESCENS, Nutt. Gen. 2, p. 68; Torr. & Gray, Fl. 1, p. 92. Var. Cattrornicum, 
Torr. & Gray, l. c. Williams’ River of the Colorado, New Mexico. February 6-18. 
SIsYMBRIUM DEFLEXUM, (Harvey, Mss. in herb. Gray :) annuum, pilis patentibus hispidulum ; 
caule stricto, folioso simplici, foliis oblongis inferioribus pinnatifidis seu pinnatipartitis, segmentis 
lineari-lanceolatis distantibus laciniato-dentatis integrisve, sinubus obtusis ; foliis supremis linea- 
ribus integris ; pedicellis brevibus cum siliquiis angustissimis rectis elongatis teretiusculis arcte 
deflexis. Turritis? lasiophylla, Hook. & Arn. Bot. Beechey, p. 321? Hill-sides, Napa valley, 
April 26. About three feet.high, slender, the lower half almost hispid, with short spreading 
hairs. Lower leaves petiolate, 2-3 inches long, more hispid than the stem; middle leaves 
sharply toothed ; the highest 2-3 lines wide, and usually entire. Flowers about as large as in 
Cardamine hirsuta, and apparently white. Petals oblong-spatulate. Pods 2-3 inches long, 
and scarcely half a line wide. Pedicles 2 lines long. Cotyledons incumbent. This plant re- 
sembles a Sisymbrium from Coulter’s Californian collecfion, sent to us by Dr. Harvey under 
the name of 8. deflexum Harv., of which we believe no description has yet appeared. A 
smoother and more humble form of it (some of the specimens only 2 or 3 inches high) was 
collected near San Francisco, April 3. 
SISYMBRIUM INcIsuM, Engelm. in Pl. Fendl., p. 8. Mountain arroyas, near San Antonita, New 
Mexico; October. — 
Erystmum asperuM, DC. Laguna Blanca to the Sandia mountains. 
Taetypopium Wricuti, Gray, Pl. Wright. 1, p.'7. Rocky places on the Pecos; September. 
Many of the flowers are in an enlarged and abnormal state, probably from the stinging of insects. 
TRoPIDOcARPUM GRACILE, Hook. Ic. 1, t. 43; Torr. & Gray, Fl. 1, p. 94. T. scabriusculum, 
Hook. 1. ¢.; Torr. & Gray, l. ce. Plains near San Gabriel, March 23. We find the two species 
of Hooker to pass into each other. 
Erysimum asperuM, DC. Syst. 2, p. 506; Torr. & Gray, Fl. 1, p.94 Near San Francisco, 
April 3, and mouth of Santa Rosa creek, May 1, (with flowers and immature fruit.) Flowers 
_ cream-color or pale yellow, becoming deeper in drying. A variety (or possibly distinct species) 
with much larger and orange-yellow flowers, was found at Cocomungo, March 17, without 
fruit ; also found by Mr. Wallace. We are unable to find characters that will clearly distin- 
guish E. Arkansanum and HE. elatum from this species. The leaves and degree of pubescence 
are very variable, and the pods seem to be the same in all of them. * 
ESICARIA ARGYREA, Gray, Pl. Lindheim. 2, p. 147. Arroyds and cafions, Williams’ River 
of the Colorado, New Mexico, February 7-26. ° 
VestcaRta Fenptert, Gray, Pl. Fendl., p. 9. Bluffs and rocky places, New Mexico; October. 
To this very polymorphus species must be referred V. stenophylla, Gray, Pl. Lindh. 2, p. 149. 
Drasa aurea, Vahl; Hook. Bot. Mag. t. 2934. San Antonita, New Mexico, and in the 
Sandia mountains, in rocky places; October. Mostly in fruit. From these specimens the 
plant appears to have a biennial root, while those of Fendler would seem to be perennial. The 
silicles are mostly twisted. 
Drasa cunerrouia, Nutt. in Torr. & Gray, Fl.1, p. 108. Williams’ River of the Colorado ; 
February 11. 
Drrayrea Wistizent, Engelm. in Wisl. Mem. New Mex., p. 11; Torr. in Marcy, Expl. Red 
fiver, t. 11. On prairies and sandy bottoms of the Canadian, near Antelope Hills; Sep- 
tember. It is from this region doubtless that the plant was first collected by Dr. James. 
Diruyrea Cattrornica, Harv. in Hook. Lond. Jour. Bot. 4, p. 77, t. 5; Engelm. in Wisliz. Mex. 
p. 95. Sandy hills on the Colorado of the West. February 22. The radical leaves are deeply 
lyrate-pinnatifid. The calyx is 4 or 5 lines long; much longer, narrower, and more closed 
than that of D. Wislizeni. The petals appear to have been purple. 
Luprpium nimmpum, Nutt. in Torr. & Gray, FI. 1, p. 116. Sandy plains, Cocomungo; March 
