36 CRUC1FRRJE. (MUSTARD OB RADISH FAMILY.) 
• distinct style — Rocky l>ank» of the Scioto, Ohio, Smllitant. May. 
— Plant P-2P high. Flower* thrice a* Urge aa in No. 5, showy. 
5. A. hirsute, Scop. (Strait II%irt Roce Crem.) Rough- 
hairy, sometimes ainoothiah, atrait; stem-leave* oblong or lanceolate, 
entire or toothed, partly claaping by a aocnew hat anow-ahaped or 
heart-ahaped baae; petal* (green i*h white) email but longer than the 
calyx ; pedicels and pods strut!y upright ; style scarcely any. — Rocks, 
Vermont to Penn. and Ohio. May, June. — Stem I°-2° high, «im- 
ple or branched from the baae. Root-1 crave* apatu late-oblong, sessile 
or nearly ao Pod* numerous and appreaaed, narrow. Flowers small. 
• • Seeds winged. (Petals narrow, whitish, seed-stalks adherent to 
the partition.) 
6. A. I;«* viKUtu. DC. (Smooth Rock Cr*»» ) Smooth and 
glaucous, upright; stem-leases partly clasping by the arrow-shaped 
baae, lanceolate or linear, sparingly eut-toothed or entire; P® 1 ®* 8 
•carcely longer than the calyi; pods long and narrow , recurred-spread- 
eng .— Rocky places, from Vermont westward. May. — St**® 
high. Pod* IV long, on short merely spreading pedicels. 
T. A. « HiiimIciisis, L. (Sickle-sod) Stem upright, smooth 
above; stem-leases pubescent, pointed at hath ends , oblong-lanceolate, 
aeaaale, the lower toothed ; petal* twice the length of the calyx, ob¬ 
long-linear ; pods drooping , fiat, scythe-shaped. — Wood*. June - Aug. 
— Stem ft - 3P high. Pod* S' long and 2" broad, veiny, hanging on 
rough-hairy pedicels, curved like a scymitar. (A. falcata, Mieht.) 
t Obscure species. 
8. A. h«t<*ropli> lla, Nutt. Nearly smooth; root-leaves *p a ^ 
uUte, toothed; tipper one* linear, sessile, entire; pods l° n £ an 
spreading (3* long); petals linear-oblong, exceeding the calyx. k aris, 
Maine, or near the White Mountains. <g) .Vuttall. 
6. TFRRiTIS, Dill. Tower Mustard. 
Po<I and flowers, Ac., as in Arabia; but the seeds occupying “ 
rows in each cell. — Biennials or rarely annuals. Flowers white 
or rose-color. (Name from turris , a tower, in allusion to the tall 
and narrow form of the plants.) 
1. T. glabra, L. (.Smooth Tower Mustard.) Stem-leaves 
oblong or orate-lanceolate, smooth and glaucous, entire, lialf-cla»P ,n 6 
by the arrow-shaped base; petals Utile longer than the calyx; 
and the long and narrow pods strictly erect. — W. New York an 
Ohio. June. Plant 2° high. Root-leaves rough-hairy, toothe . 
petioled. Flower* yellowish-white. Pods 3' long, very narrow, 
straight. 
2. T.Mricta, Graham. (Straight Tower Mustard.) Smooth; 
