134 CRUCIFER^. Bmssica. 



some weed in cultivated ground ; fl. June to August. Tlie form whicli is naturalized in 

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

 from Eu., Asia.) 



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

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

 with lateral nerves olsscure and flexuous : other characters nearly as in the preceding. — 

 Bull. Soc. Bot. France, vi. G09 ; Hook. f. & Thom. Journ. Linn. Soc. v. 170. — Sparingly 

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



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

 usually all piunatifid : pods spreading, densely hispid, tipped with long flat beaks; seeds pale 

 yellow. — Gray, Man. ed. 5, 70. Sinajils alba, L. Spec. ii. 668. — Often cultivated and not 

 infrequently spontaneous, especially in grain fields, Maine, Fernald, to Vancouver, Macoim, 

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



B. ADPKESSA, Boiss. 1. c. 38 {Erucastrum incanum, Koch), with pinnately parted leaves and 

 finely tomentose racemes of short closely appressed pods, has become locally established as a 

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



22. DIPLOTAXIS, DC. (AtTrXoos, double, and raits, row, in reference 

 to the biseriate seeds.) — A gerontogeous genus of some twenty s^^ecies, not very 

 satisfactorily distinguished from Brassica. Two species are becoming so frequent 

 upon waste ground in America as to merit notice. — Syst. ii. 628 ; Benth. & 

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

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



D. MURALis, DC. Branching from near the base, smooth or sparingly hi.spid : stems often 

 naked above : leaves oblauceolate, 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^-er; Philadelphia, Martindale ; New York, Broion ; Chelsea, Mass., Young; 

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



D. TENUiFOLiA, DC. Similar in habit : leaves deejily sinuate-pinnatifid with narrow seg- 

 ments : flowers larger : petals .5 lines in length : fruiting pedicels about inch long : capsules 

 slender, H inches in length. — S^'st. ii. 632 ; Reichenb. 1. c. — Similar situations as the last 

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



23. CONRING-IA, Heist. {Professor Hermann Gonring, 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; Reichenb. Ic. Fl. Germ. ii. t. 61. Under 

 Erysimum, L. Gen. no. 545 ; DC. Syst. ii. 507. — 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. Glabrous annual, witli elliptical obtuse deeply cordate and 

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

 sharply 4-angled pods. — C. orientalis, Dum. Fl. Belg. 123. Brassica oriental is, L. Spec. ii. 

 666. B. perfoliattt. Lam. Diet. i. 748. Erysimum perfoliatum, Crantz, Stirp. Austr. i. 27. 

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

 508. — Waste places in the Canadian Provinces, Macoun, and Minnesota, Sandherg ; as yet 

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



24. ALiLiIAR-IA, Adans. (The Linnean specific name of Erysimum 

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



