IX. CRUCIFEKiE. 29 



their edges (acmmhent).— 'Di8TTiiB. All temperate and cold regions, 

 chiefly of the Old World; genera 172; species about 1200. 



Pods long, dehiscing throughout their whole length, terete, 

 4-angled or dorsally compressed (parallel to the septum). 

 Laternl sepals not saccate at the base. 



Pods spreading or ascending ; cotyledons ae- 

 cumbent. 



Pods tumid, not compressed ; seeds 



2-seriate 1. Nasturtium. 



Pods narrow-linear, compressed; seeds 



1-seriate 2. Cahdamine. 



Pods closely appressed to the axis 4. Eruca. 



Lateral sepals saccale at the base. 



A twiggy undershrub : leaves small, linear- 

 oblong; cotyledons accumbent 3. Farsetia. 



Branched herb, woody at the base ; leaves large, 



elliptic oblong ; cotyledons incumbent 5. Moricandia. 



Pods short, dehiscing throughout their whole length, com- 

 pressed at right angles to the narrow septum. 

 Valves not winged. 



Pods many-seeded 6. Oapsella. 



Pods 2-seeded 7. Senebiera. 



Valves with broad wings 8. Tiilaspi. 



Pods long or short, transversely jointed ; joints indeliiscent 

 or the lower 2-valved. 



A leafy undershrub ; pods 2-jointed, lower joint 



seedless, 2-valved 9. PiiYsoRiiYNcnua. 



1. NASTURTIUM, E. Br. 



Terrestrial or aquatic, branched herbs, glabrous or clothed with simple 

 hairs. Leaves entire, lobed or pinnatifid. Flowers small, yellow, rarely 

 white, sometimes bracteate. Sepals short, spreading, equal. Petals 

 short, narrowed at the base, scarcely clawed or 0. Stamens, 2, 4 or G ; 

 filaments without wiugs or teeth. Pods not compressed, subterete ; 

 valves faintly 1-nerved ; septum hyaline ; style short or long and 

 slender ; stigma simple or 2-lobed. Seeds small, turgid, usually 

 2-seriate ; cotyledons accumbent. — Disteib. Throughout the world ; 

 species 20-25. 



Aquatic herb 1. N. officinale. 



Terrestrial herb 2. N. indicum. 



1. Nasturtium officinale^ B. Br. in Ait. Hort. Kew. ed, 2, v. 4, 

 p. 110. An aquatic herb; stem 2-4 ft. long, procumbent and rooting, 

 fistular, often floating. Leaves green or olive-brown, pinnate ; leaflets 

 sessile, 3-5 pairs and a terminal one, ovate-oblong or siuuately-lobed, 

 obtuse. Flowers small, \-\ in. in diam., in short racemes. Petals ex- 

 ceeding the sepals. Pods l-l in. long, shortly cylindric, stalked, 

 spreading or curved upwards ; fruiting pedicels about equalling the 

 pods. Seeds minute, muriculate, not winged, red. Fl. B. I. v. 1, 

 p. 133; Grab. Cat. p. 7; Dalz. & Gibs. Suppl. p. 4; Syme, Engl. Bot. 

 V. 1, p. 176, t. 125 ; Watt, Diet. Econ. Prod. v. 5, p. 342. 



The Wafer-cress, introduced into India. It now grows wild in many watercourses 

 and is cultivated in many places in the vicinity of Indian stations, the leaves being 

 collected and sold in the markets chiefly for the use of Europeans. — Distrib. Afghaia- 

 istan, temperate Europe and Asia. 



