CLASS XV. ORDER I.J CRAMBE. 871 



fumiculus. Cotyledons thick, con duplicate, deeply emargiuate.— 

 (c Fig. 3. page 872.)— Name from k^ooix^v, of the Greeks. 

 1. C.mariti'ma, Linn. (Fig. 1005.) Sea Kale. Longer filaments 

 toothed ; silicules pointless ; leaves roundish, sinuated, waved and 

 toothed, glaucous, and as well as the stem smooth. 



English Botany, t. 924.— English Flora, vol. iii. p. 184.— Hooker, 

 British Flora, ed. 4. vol. i. p. 246. — Lindley, Synopsis, p. 34. 



i2oo< large, thick, fleshy, much divided towards the top. Stems 

 mostly several, from one to two feet high, round, smooth, branched, 



are in pairs opposite the placental sepals, the Jilaments are free, sometimes partly 



united or toothed on their inner sides. Disk small, sometimes supporting the 



germen, at others forming nectariferous glands between the petals, stamens, 



and germen. Germen formed of two or four united carpels, with parietal 



placenta, mostly meeting in the middle, and forming a spurious dissepiment, 



rendering it two celled, ovules one or many. The styh is short when the germen 



is long, and long when the germen is short. Stigmas two, opposite the placenta. 



Fruit a one or spuriously two celled selique. Seeds one, two, or many, mostly 



pendulous, in a single row on each side of the placenta ; they are without 



albumen, and the testa is thickish, subcoriaceous, the emhryo is curved, the 



radicle round or subconical, and turned towards the hilum ; the cotyledons are 



variously folded on the radical, and are foliaceous in germination. 



According to De Candolle Regni Vegetababilis, v. 2, p. 143, the species 



distributed geographically, exclusive of those that are uncertain or common to 



several difTerent countries, about 100 are found in the southern hemisphere, and 



about 800 in the northern, or 91 in the new, and the rest in the old world j or 



according to their distribution with regard to temperature they are — 



In the frigid zone of the northern hemisphere 205 



In all the tropical, and chiefly in mountainous regions 30 



Tr. fv,« ♦,»,«„«,„*« »««„ fof the northern hemisphere... 548") ^o^ 

 In the temperate zone|^f ^^^ ^^^^^^^^^ hemisphere ... 86/ ^^^ 



These calculations serve to give a general idea (though probably far from a 

 correct one) of the manner in which the order is distributed over the different 

 regions of the globe. 



According to the Linngean system, the genera of this order are subdivided info 

 two — the Siliquosa and the Siliculosa — which is sufficiently convenient for a 

 small number of plants, but not for the number of 133 genera that are now 

 known, and more recent divisions have been established upon the difference in 

 the doubling of the cotyledons, and the position of the radicle with respect to 

 them. 



The cotyledons are, for the most part, two in number, and when the radicle is 

 curved up and lies upon ttie edges of both of them, they are said to be 

 accunibent ; but when the radicle is curved up and lies upon the side of one of 

 the cotyledons, they are said to be incumbent. The sub-orders which have been 

 established upon this principle are — 



Pleurorhizeje. (Fig, 1,) a Cotyledons flat, with an accumbent radicle, 

 seeds compressed; b a transverse section of the same, 

 to show the radicle lying upon the edges of the two 

 ' ^' cotyledons; c the symbol by which this seed is indi- 

 cated, the ring indicating the section of the radicle 

 O ~ — '• ^"^ ^^'® ^"° lines, the relative position of the coty- 



r ledons. 



