Obdeb 13.— CUBCIPER^ , 238 



<• 



silique flat, linear or oblong, valves indfttinctly veined ; seeds in a single 

 row,, flattened, wing-margined ; embryo nearly straight, curving towards 

 an accunibent form. — @ Low, smooth herbs with lyrate-pinnatifid Ivs. 

 FIs. yellowish. 



Ii. Michai^xii Torr. (and L. aarea Torr.). On wet rocks S. B. Ky. to Texas. 

 Plant 2 — 6' high. Lvg. mostly radical, an inch or two in length, segm. 1—5, 

 angular. FIs. at first solitary, on slender scapes, finally racemed. Petals twic» 

 longer than the sepals, yellow, at least its broad claws. Pods erect, 3 — S-seeded. 

 Mar., Apr. (Cardamine uniflora. Mx.) 



10. BARBAREA, R. Br. Winter Cbess. (In honor of St. Bar- 

 bara who discovered [what are since unknown] its medicinal proper- 

 ties.) Sepals erect; siliqucs columnar, 2 or 4-angled, valves carinate 

 with a mid-vein ; seeds in a single row (0=r). — Lvs. lyrate-pinnatifid. 

 FIs. yellow. 



1 B. vulgaris R. Br. Upper lvs. toothed or pinnatifid at base ; siliques obscurely 

 i-angled, pointed with the style. — ® Melds and brooksidos, common, S. Statta. 

 Whole plant glabroa?. St. furrowed, 1 — 2f high, branching above. Lower Iva. 

 lyrate pinnatifid, with small, oblong pinna;, and a large, broad-ovate, terminal lobe^ 

 dark green, shining, with clasping petioles ; upper lvs. sessile, all very obtuse. — ITS. 

 in dense racemes. Pods about 9" lon^, usually curved, ascending or erect. May, Jn. 



2 B. prdoox R. Br. Belle isle Cress. Scurvy Grass. Upper lvs. pinnati- 

 fid, with the lobes all linear-oblong; silique 2-edged. — 1|- Cultivated southward 

 for salad, and sparingly naturalized. St. slender. If high. Lower lvs. with tha 

 terminal lobe ovate. Siliques 2 or 3' long. Apr., Jn. 



11. ERYSIMUM, L. False Wall Flower. (Gr. ipvo), to cure ; from 

 its salutary medicinal properties.) Calyx closed ; siliques columnar, 

 3-sided, valves with a strong mid-vein ; stigma capitate ; seeds in a sin- 

 gle series ; cotyledons oblong, 0||. — FIs. yellow. 



X E. cheiranthoides L. Pubescence minute, appressed, branched; lvs. lanceo- 

 late, denticulate, or entire ; fl.s. small ; siliques short (8 — 10"), on slender, spread- 

 ing pedicels ; stig. small, nearly sessile. — ^Q) By streams and in wet grounds, U. S. 

 and Can., not common. St. erect, 1 — 2f high, often branched, and, with the 

 leaves, scabrous. Lvs. acute at each end, 1 — 2' long, J as wide. Pis. small, yel- 

 low, in long racemes. Siliques J to near 1' in length, linear, and somewhai 

 spreading. Jl. 



2 E. Arkansanum Nutt. Tellow Phlox. Scabrous, with an appressed pu- 

 bescence ; st simple ; lvs. linear-lanceolate, remotely dentate, sessile, lower ones 

 runcinate-toothed ; inflorescence- racemons, corymbed at summit ; siliques Umj 

 (%'), erect, on short, erect pedicels ; stig. capitate. — ® A fine plant, with large, 

 showy flowers, resembling the wall-flower, on bluffs along rivers, Ohio to Ark. 

 St. 1 — 3f high, slender. Lvs. 2 — 3' by 3 — 6". Sep. straw-colored. Petals large, 

 bright-orange yellow. Siliques 3' long. Jn., Jl. 



12. SISYMBRIUM, Allioni, (An ancient Greek name.) Calyx half- 

 spreading, equal at base ; petals unguiculate, entire : silique subterete, 

 valves concave, marked lengthwise with 1 — 3 veins; style very short; 

 seeds in a single series, ovoid, 0||. — FIs. (yellow) small. 



1 S. officinale Scop. Hedge Mustard. Lvs. rundnaie ; rao. slender, virgate ; 

 siliques subulate, erect, closely appressed to the rachis. — ^Tl A common weed, in 

 fields, roadsides, rubbish, etc., Can. and U. S. St. 1 — 3f high, with spreading 

 branches. Lower lvs. 3 — 8' by 1 — 3', the lower segments placed at right angles 

 to the midvein, or pointing backwards, the terminal segment largest. Upper Iva 

 in 3 lanceolate segments at right angles. FIs. small, yellow, terminating the ra- 



