16 CRUCiFERiE. {Cruclferce. 



Pod a linear siliqua. 



Pod-valves very convex. Seeds in 2 rows. Flowers yellow . . . 1. Nasturtium. 



Pod-valves flat. Seeds in 1 row. Flowers white 2. Cardamine. 



Pod a triangular or almost obcordate silicule 3. Capsella. 



Pod indehiscent, nearly cylindrical, contracted between tlie seeds ... 4. Raphanus. 



1. NASTUHTIUM, R. Br. 



Pod linear or oblong and often curved, the valves very convex, with the 

 midrib scarcely visible. Seeds more or less distinctly arranged in 2 rows in 

 each cell, and not winged. Eadicle accumbent. — "Flowers yellow, or in one 

 sj)ecies (not in Hongkong) white. 



A small genus, but widely spread over the whole area of the Order. 



I. 3M. montanuxn, TFall. Catal. 7i. 411S. A low branching glabrous an- 

 nual. Leaves from ovate to very nearly lanceolate, coarsely toothed or lobed, 

 the lower ones stalked and often lyrate. Flowers very small, of a pale yellow. 

 Fi-uiting racemes 2 to 4 in. long, divaricate, without the bracts of N. hen- 

 glialense. Pod slender, nearly straight, about 8 or 9 lines long. 



Hongkong, Hance, Wright. A common E. Indian weed, extending to Java, the Philip- 

 pines, and northward to Loochoo. It may be a variety of the still more common Indian 

 N. iadicum, DC, from which it differs chiefly in the much greater length of the pod, and both 

 come very near to some forms of the N.palustre, DC, which has a still shorter pod. 



2. CARD AMINE, Linn. 



Pod narrow-linear, the valves flat, without any conspicuous midrib and 

 usually opening with elasticity. Seeds apparently in a single row in each 

 cell, the radicle accumbent. — Flowers white or pink. 



A large and natural genus, widely spread over the temperate and colder regions both of 

 the northern and the southern hemispheres. 



1. C. hirsuta, Linn.; DC. Prod. i. 152. An annual, of a deep-green 

 colour, often much branched at the base, with ascending or erect stems usually 

 about 6 in. high, with a few scattered hairs which are not however very 

 conspicuous. Leaves pinnate, the segments small, those of the lower leaves 

 ovate or rounded and angularly toothed ; the upper ones narrower and more 

 entire. Flowers very small and white. Pods in a rather loose raceme, 6 lines 

 to 1 in. long. 



A naturahzed weed, Champion and others. Probably of European or North Asiatic origin, 

 but now fi'equently met with as a weed throughout the temperate regions of the globe. 



3. CAPSELLA, Vent. 



Pod oblong-obovate or triangular, flattened laterally (at right-angles to the 

 narrow partition), the valves boat-shaped, not winged. Seeds several in each 

 cell, the radicle incumbent on the flat cotyledons. 



A genus of 2 or 3 European or Asiatic annuals. 



1. C. Bxirsa-pastoris, DC. Prod. i. 177. An annual, with a deep tap- 

 root. Eadical leaves spread on the ground, pinnatilid, with a larger ovate or 

 triangular terminal lobe, or sometimes entire. Stem from a few inches to above 



