■^i^YssuM. XIII. CRUCIFER^. Ig;, 



5. COCHLEARIA. Toiirn. 



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. 



■^C- Armoracia. Horse Radish.— Radical Ivs. olDlong, crenate : rauUne Ion? 

 an-ceolate, dentate or incised, sessile ; .silicic elliptic.— -Ij. A coiWon garden 

 herb, native of Europe. Hoot fleshy, large, white, very acrid Stem "— 3f 

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

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

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

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



/?. aqiiatica. (C. aquatica. Eaton and l5^ edit.) Lvs. all pinnatifid the 

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



2. C. OFFICINALIS. Scurvtj Grass.— Radical lvs. cordate, petiolate caidina 

 ovate, angular or dentate; silicles oval-globose, half as long as the pedicel — 

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

 long, I 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 

 tedons linear, curved. — ® Aquatic, acaulescent herbs. 



S. AauATiCA. Aiclwart. 



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

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

 ^ich in length. Scape 2 — 3' high, racemose, with a tew minute, white flowers, 

 en slender pedicels only 2" in length. Jl. 



7. CAMELINA. Crantz. 



Gr. ^ajiai, dwarf; Xivoj', flax. 



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

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

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



C. SATiVA. Crantz. (Myagrum. Linn.) Gold-of-plcasw-e. False Flax, 

 ii-s. lanceolate, sagittate at base, subentire; 5/7/c/c"obovate-pyrifonn, mar- 

 gined, tipped with the pointed style. — ® In cultivated fields. Stem I J — 2i f. 

 high, straight, erect, branching. Leaves roiighish, 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 ; Xuiro-a, rage ; supposed 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 Ali/.-^sivm. Madwort. — SL suffruticose at base, subco- 

 '■jTnbose ; lvs. lanceolate, entire, downy; silicle ovate-orbicular, 2-seeded; sds. 

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

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



2. A. MARiTiMUM. Lam. Sv:cet Altjssum. — St. suff'ruticose and. procumbent 

 at base; lvs. linear-lanceolate, acute, somewhat hoary; jmds oval, smooth. — 

 % 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 



