134 CnrCIFER.E. Bmsslca 



some weed in cultivated ground ; fi. June to August. The form wliicli is naturalized in 

 America lias glahrous pods, while in the Old World they are quite as often hispid. (Nat. 

 from Eu., Asia.) 



B. JrNCE.\, Cosson. Glabrous or nearly so : upper leaves narrowly lanceolate to linear- 

 Gblong, nearly or quite entire, always cuneate at the base : valves of the capsule 3-nerved 

 with Literal nerves obscure and flexuous : other characters nearly as in the preceding. — 

 Bull. Soc. Bot. France, vi. 609; Hook. f. & Thom. Journ. Linn. Soc. v. 170. — Sjiaringly 

 introduced in the Eastern States. (Introd. from Eu., Asia.) 



B. Alba, Boiss. 1. c. (White Mustard.) Habitally resembling the two preceding : leaves 

 usually all pinnatifid : pods spreading, densely hispid, tijjjjed with long flat l)eaks ; seeds pale 

 yellow. — Grav, Man. ed. 5, 70. Sinupis uiha, L. Spec. ii. 668. — Often cultivated an<l not 

 infrequently spontaneous, especially in grain fields, Maine, Ftniald, to Vancouver, Macouu, 

 and S. California, Ilasse. (Introd. from Eu.) 

 B. ADPRESSA, Boiss. 1. c. 38 (Erticastnim incmiuvt, Koch), with pinnately parted leaves and 



finely tomentose racemes of short do.sely appresscd pods, has become locally established as a 



wayside weed in and near the city of San Bernardino, Calif., Parish. 



22. DIPLOTAXIS, DC. (AittAoos, double, and rd^t^, row, in reference 

 to the biseriate seeds.) — A gcrontogeous genus of some twenty species, not very 

 satisfactorily distinguished from Brassica. Two species are becoming so frequent 

 upon waste ground in America as to merit notice. — Syst. ii. G28 ; Benth. & 

 Hook. Gen. i. 84; Prantl, 1. c. 176. Included in Brassicahy Baill. Hist. PL 

 iii. 248, and others. [By B. L. Robinson.] 



D murAlis, DC. Branching from near the base, smooth or sparingly hispid : stems often 

 naked above : leaves oblanceolate, shallowly and bluntly toothed or pinnatifid, attenuate 

 below : flowers rather small : sepals erect : petals 3^ lines long, pale yellow : fruiting raceme 

 loose flexuous ; pedicels spreading, 4 to 6 lines long : capsules over inch in length, nearly 

 terete, tipped with subulate beaks; valves distinctly nerved; seeds ovoid, brown. — Syst. 

 ii 634 ; Eeichenb. 1. c. t. 82. — A ballast-weed near the ports of the Atlantic seaboard, 

 Camden, Par/ter; Philadelphia, Marttndale ; New York, Brown; Chelsea, Mass., Youmj ; 

 Carleton, N. B., Fowler; I'ictou, N. S., Macoun; fl. July to September. (Adv. from Eu.) 

 D TENUiFoiiv DC. Similar in habit: leaves deeply sinuate-pinnatifid with narrow seg- 

 ments • flowers larger: petals b lines in length : fruiting pedicels about inch long : caj.sules 

 slender, U inches in lengtli. - Sy.-^t. ii. 632; Reichenb. 1. c. - Similar situations as the last 

 and about equally frecjuent. (Adv. from Eu.) 



23. CONRfNGIA, Heist. (Professor Hermann Conrhuj, born at Norden, 

 1606; died at Helmstedt, Brunswick, 1661.) — A small natural genus of char- 

 acteristic habit, but without sharp technical characters. — Heist, ace. to L. Syst. 

 Nat. ed. 1; Link, Enum. ii. 172; Eeichenb. Ic. Fl. Germ. ii. t. 61. Under 

 Erysimum, L. Gen. no. o45 ; DC. Syst. ii. r>07. — One species, perhaps of eastern 

 origin but now of general distribution in Centr. Europe, is adventive in America. 

 [By B. L. Robinson.] 



C. perfoliAta. Link, 1 c. Glabnms annual, with elliptical obtuse deeply cordato and 



amplexicaul leaves, vellowish white flowers, and long widely spreading acutish and rather 



sharplv 4-angled pods. - C. orimtaUs, Dum. Fl. Belg. 123. Brassica orientalis, L. Spec. ii. 



666. 'B. perfoliata, Lam. Diet. i. 748. Erijsimum prrfoliatim, Crautz, Stirp. Austr. i. 2,. 



E orientale, R. Br. in Ait. f. Kew. ed. 2, iv. 117. Conringia onentalis, Andrz. in DC. 1. c. 



508. — Waste places in the Canadian Provinces, Macom, and Minnesota, Sandbcr;,; as yet 



scarcely more than a ballast-weed. (Adv. from Eu., Asia.} 



24. ALLIARIA, Adans. (Tlie Linnean specific name of Eri/simum 

 AUiaria, derived from Allium, onion, garlic, in reference to the odor.) — A .small 



