) 



^i 



1 



have J 



eurv 



next, 



il as I 



3 





two 



^ate o; 



snari, 



76. 



;of& 

 Engk 



, On 

 i 



11 lat 



tuber; 



iViclfe 



in f 







VL CRUCIFER^ 



21 



style persistent. 



segments elliptical entire, petioles ending in tendrils, pedicels 

 very sliort scarcely so long as the minute bracteas, root fibrous, 



Fumarla L. : E. B. t. 103. 



Bus\iy and' shady places, in gravelly or stony soil. In Scotland; 

 most abundant on walls and roofs of houses, especially in the High- 

 lands. 11. 6, 7.-— Stems long, very slender. Whole plant extremely, 

 delicate. Flowers small, pale yellow almost white ; seeds with a con- 

 cave crest, in germination with two oblong lanceolate cotyledons. 



L ■ 



Okd. VI. CEUCIFER.E Juss. 



Calyx of 4 sepals. Petals 4. Stamens usually 6 and tetra- 

 dynamous ; 2 solitary, alternate with the petals ; 4 opposite to 

 them in 2 pairs ,' rarely only 4 and equal. Ovary and Style 1 ; 

 ^^^^1 hypogynous glands at the base of the solitary stamens. Pericarp 

 '^^'^^ usually a jt?OMcA or pod, 2-rarely 1 -celled, 2-valved the valves 



opposite the shorter stamens; sometimes valveless. Seeds on 

 mar^^inal placentas (between the longer stamens) without albu- 



Radicle curved. Cotyledons plane, parallel to the dis- 



men. 



sepiment and with their edges applied to the radicle (accumbent 

 6=)i ; or plane, with their back turned to the radicle (incum^ 



o 



» 



Herbs. Leaves alternate. Flowers generally m 



corymbs which at length become racemes. — A most important 

 Natural Order, many of the plants which it contains being 

 cultivated as esculents ; the Cabbage, Turnep, Mustard, and 

 Cresses of various kinds, Horse-radish, &c. They contain an 

 essential oil which renders them stimulating, while their seeds 



yield a fine and mild oleaginous fluid, as Rape; and they are 

 antiscorbutic. The mustard-seed is used for sinapisms. Most 

 ictwi kinds contain sulphur and nitrogen, and give out in decaying 



a smell resembling that of animal matter. 



I. SiucuLOS^. Fruit short, scarcely more than a half longer than broad. 



A. Fruit without valves; or 1-celled, 1-seeded. 



4,^ 17. Cakile. Fruit of 2 joints placed end to end, upper angular deci- 



dulous 1-seeded, lower sometimes sterile. Cot. o=. 

 Cra:mbe. Fruit of 2 joints placed end to end, upper globose deci- 

 ■ duous 1-seeded, lower stalk-like. Cot. o». 

 Senebiera. Fruit with 2 cells placed side by side, each 1-seeded. 



Cot. ol|. 

 IsATis. Fruit 1-celled, 1-seeded, with keeled valves. Cot. o|l. 



32. 



26, 



27. 



1 The radicle points to or is next the placenta, and, unless accidentaHy twisted, 

 must be parallel to the dissepiment. When, therefore, the cotyledons are flat, with 

 their edges turned to the placenta, they are truly accumbent, although apparently 

 incumbent. But when they are linear, or the seed is nearly terete, their position 

 and that of the seed itself mav be altered by a twist of the seed stalk, in which 

 case it is preferable to be guided solely by the apparent relative position of the 

 radicle and cotyledons in the detached seed. 



