ALYSSUM. XI11. CRUCIFER^. 163 



5. COCHLEARIA. Tourn. 

 Lat. cochlear, a spoon ; refering to the concave leaves. 



Calyx equal at base, spreading; petals entire; stamens without 

 teeth ; silicle sessile, oblong or ovoid-globose, with ventricose valves ; 

 seeds many, not margined ; 0=. Fls. white. 



1. C. ARMORACIA. Horse Radish. Radical ITS. oblong, crenate ; caulinelong, 

 lanceolate, dentate or incised, sessile ; silicle elliptic. 1\. A common garden 

 herb, native of Europe. Root fleshy, large, white, very acrid. Stem 2 3f 

 high, angular, smooth, branching. Radical leaves near a foot long, as wide, 

 on long, channeled petioles. Lower stem-leaves often cut in a pinnatifid 

 manner, upper toothed or entire. Flowers small, in corymbose racemes. The 

 root is a well known condiment for roast beef and other viands. Jn. 



/?. aquatica. (C. aquatica. Eaton and 1st edit.} Las. all pinnatifid, the 

 lower ones doubly and finely so. Wet places, often submerged.^ 



2. C. OFFICINALIS. Scurvy Grass. Radical Ivs. cordate, petiolate, caulinc 

 ovate, angular or dentate ; silides oval-globose, half as long as the pedicel. 

 % Native of Europe and of Arctic Am. Stem 8 12' high. Root leaves 4 18' 

 long, | as wide. Flowers racemed. Occasionally cultivated for its powerful 

 antiscorbutic properties. Jn. 



6. SUBULARIA. 



Named in reference to the linear-subulate leaves. 



Silicle oval, valves turgid, cells many-seeded ; stigma sessile ; coty- 

 ledons linear, curved. Aquatic, acaulescent herbs. 



S. AQUATICA. Awlwort. 



A small plant growing on the muddy shores of ponds in Maine, Nutt., 

 and near the White Mts., Pickering. Leaves all radical, entire, subulate, an 

 inch in length. Scape 2 3' high, racemose, with a few minute, white flowers, 

 on slender pedicels only 2" in length. Jl. 



7. CAMELINA. Crantz, 



Gr, %ap.ai) dwarf; \ivov, flax. 



Calyx equal at base ; petals entire ; isilicle obovate or subglobose, 

 with ventricose valves and many-seeded cells ; styles filiform, persis- 

 tent ; seeds oblong, striate, not margined, j| . 



C. SATIVA. Crantz. (Myagrum. Linn.} Gold-of -pleasure. False Flax. 



Lvs. lanceolate, sagittate at base, subentire ; silicle obovate-pyriform, mar- 

 gined, tipped with the pointed style. In cultivated fields. Stem 1 2j f. 

 high, straight, erect, branching. Leaves roughish, 1 2' long, clasping the 

 stem with their acute, arrow-shaped lobes. Flowers small, yellow, in panicu- 

 lated racemes. Silicles 2 3" long, on pedicels 2 3 times as long. Said to 

 be cultivated in Germany for the oil which is expressed from the seeds. Jn. 



8. ALYSSUM. 

 Gr. a. privative ; Autro-a, rage ; suppod by the ancients to allay anger. 



Calyx equal at base ; petals entire ; some of the stamens with 

 teeth ; silicle orbicular or oval, with valves flat or convex in the cen- 

 tre ; seeds 1 4 in each cell. 



1. A. SAXATILE. Rock Alyssum. Madwort. St. suffruticose at base, subco- 

 rymbose; Ivs. lanceolate, entire, downy; silicle ovate- orbicular, 2-seeded; sds. 

 margined. An early-flowering garden perennial, native of Candia. Stem If 

 high, with numerous yellow flowers in close corymbose bunches. Apr. May.-f 



2. A. MARITIMUM. Lam. Sweet Alyssum. St. suffruticose and procumbent 

 at base ; Ivs. linear-lanceolate, acute, somewhat hoary ; pods oval, smooth. 

 1J. A sweet-scented garden plant, with fine leaves and small white flowers. 

 Stem a foot in length. Flowers from Jn. to Oct. All the species of Alyssum 

 are of easy culture in common loamy soils, f 



