164 XIII. CRUCIFER^E. NASTURTIUM. 



9. LUNARIA. 



Lat. luna, the moon ; from the broad, round sihcles. 



Sepals somewhat Msaccate at base ; petals nearly entire ; stamens 

 without teeth ; silicle pedicellate, elliptical or lanceolate, with flat 

 valves j funiculus adhering to the dissepiment. 



1. L. REDivlVA. Perennial Satin Flower or Honesty. St. erect, branching ; 

 Ivs. ovate, cordate, petiolate, mucronately serrate ; silicles lanceolate, narrowed 

 at each end. 1}. From Germany. Stem 2 3f high. Flowers light purple. Jn. f 



2. L. BIENNIS. DC. Honesty. St. erect; Ivs. with obtuse teeth ; silicles oval, 

 obtuse at both ends. @ These are large, hairy plants, native of Germany. 

 Stems 3 4f high. Leaves cordate. Flowers lilac-colored. The broad, 

 round, silvery silicles are the most remarkable feature of the plants. May, Jn. f 



10. IBERIS. 



Most of the species are native of Iberia, now Spain. 



The 2 outside petals larger than the 2 inner ; silicles compressed, 

 truncate, emarginate, the cells 1 -seeded. None of the species are N. 

 American. 



1. I. UMBELLATA. Purple Candy-tuft. Herbaceous, smooth ; Ivs. linear-lan- 

 ceolate, acuminate, lower ones serrate, upper ones entire ; siiides umbellate, 

 acutely 2-lobed. This and the following species are very popular garden 

 annuals, very pretty in borders, and of very easy culture. I. umbellata is from 

 S. Europe. Stem If high. Flowers purple, terminal, in simple umbels, and 

 like the rest of the genus remarkable lor having the 2 outer petals larger than 

 the 2 inner ones. Jn. Jl. f 



2. I. AMARA. Bitter Candy-tuft. Herbaceous; Ivs. lanceolate, acute, some- 

 what toothed ; fls. corymbed, becoming racemed ; silicles obcordate, narrowly 

 emarginate. Native of England. Stem If high. Flowers white. Jn. Jl.j- 



3. 1. PINNATA. Winged-leaved Candy-tuft. Herbaceous, smooth ; Ivs. pin- 

 natifid ; roc. corymbose, but little elongated after flowering. From S. Eu- 

 rope. Plant If high. Flowers white. Jn. Aug. f 



4. I. SAXATILIS. Rock Candy-tuft. Shrubby; Ivs, linear, entire, somewhat 

 fleshy, rather acute, smooth or ciliate ; fls. in corymbs. From S. Europe. 

 Nearly If high. Flowers white. Apr. Jn. f 



Obs. Twenty-four species of the Iberis have been described, others of which are equally ornamen- 

 tal with those above mentioned. 



11. ISATIS. 



Gr. io-<zco, to make equal ; supposed to remove roughness from the skin. 



Silicle elliptical, flat, 1 -celled (dissepiment obliterated), 1 -seeded, 

 with carinate, navicular valves, which are scarcely dehiscent. None of 

 the species are N. American. 



I. TINCTORIA. Woad. Silicles cuneate, acuminate at base, somewhat spatu- 

 late at the end, very obtuse, 3 times as long as broad. The Woad is native 

 of England. It is occasionally cultivated for the sake of its leaves, which 

 yield a dye that may be substituted for indigo. The plant grows about 4 f. 

 high, with large leaves clasping the stem with their broad bases. Flowers 

 yellow, large, in terminal racemes. May Jl. 



SECTIONS. SILIQ,UOSJ3. ( 80, note.) 

 12. NASTURTIUM. R. Br. 



Lat. nasus tortus ; from the effect of these acrimonious plants upon the nose. 



Sepals equal at base, spreading ; silique subterete, mostly curved 

 upwards, sometimes short so as to resemble a silicle ; valves veinless ; 

 seeds in a double row, 0=. Aquatic herbs. 



