MUSTARD FAMILY. 43 
Pod terminating in a strong beak. Seeds round. *Flowers 
yellow. 
Calyx erect in tegen 4. Brassica. 
calyx spreading In blos 5. Srvapis. 
Pod short y times caper th an Bore or pouch), 
Pod globose (rarely forming). Flowers white. Leaves 
mostly undivided. 6. ARMORACIA, . 
Pod pear-shaped, many-seeded. Flowers y' ga 7, CAMELINA. 
Pod flattened contrary to the narrow partitio 
triangular obovate. nS 5 many. 8. CAPSELLA. 
, Pod roundish, small. _Seeds 9. Lepmpium. 
§2. Pod + 1s. ig L oe j —s 4 
Tipe. 
Flower yellow or purplish. 10. RarHanvs. 
1. NASTUR’TIUM, R. Br ‘WateEr-CRESS. 
{Latin, Nasus tortus, a tortured nose, from the pungent effect of the plant.) . 
es nearly terete, — alm short as a silicle, usually 
rved w ets wards ; valves nerveless. Seeds meal irrepeutiey id pc in 
series, not sarthond. Aquatic or subaquatic herbs. 
often sicinttchy dissected. 
1. N. officinéle, R. Br. Leaves pinnately divided ; segments rounded 
or oblong ; petals white, twice the length of the calyx. ; 
OrrictinaL Nasturtium. Water-cress. 
Fr. Cresson de Fontaine. Germ. Die Brunnenkresse. Span. Bérro. 
Perennial. ne ~12 and 18 inches long, branching. eaves odd-pinnately dissected 
segments in 3-4 pairs, the terminal one largest. Petals white. 
Brooks and rivulets : probably introduced from Europe. FI. June. Fr. July. 
Obs. This plant (well hoon as the “ Mates Cress” in England,) is 
pace cultivated, and is naturalized in some places: It affords an 
holesome salad, sc ilenhatin in its properties, as all the 
Cree are, ee being rege propagated, is worthy of being a ae cod 
suitable 
2. BARBARBD’A, R. Br. Whryrer-cress. 
¢. 
g been formerly dedicated to St. Barbara.] 
Si iiucee, ‘somewhat 4-sided, the valves keeled by a mid-nerve, 
Si i a single series. Leaves lyrately pinnatifid. : 
1. B. rox, R. Br. Lower leaves lyrate . the terminal lobe obovate, 
er i sinnate-dentate ; tee leaves Resin, with 
oblong segments ; silique g thicke 
bray shies pedicels, 
Earty Barparea. Scurvy-grass. Early Winter-cress. 
A Feng Hoy des Prior = Germ. Die Winter-kresse. Span. Yerba 
. 
a 
Root n biennial? Stem 9-16 ine = 36 laches mowha a ae ath Leaves sm00th lower — 
ones 3- ‘ ee aes ~ tacos Tog, slender. : : 
Gasinee eau: “1 = 
~June, — aay > a 
