128 IX. FUMARIACE.E. [ 



ovules 2, on 2 placentas. Fruit indehiscent, globose, 1-seeded. DISTRIB. 

 Species about 8 ; usually agrarian weeds of the temperate regions of the 

 Old World. 



1. P. parviflora, Lawk, sub-sp. VAILLANTH, Loisel (sp.) ; diffuse, leaf- 

 segments flat, racemes lax-flowered, sepals lanceolate much smaller than 

 the corolla-tube, pedicels exceeding the bracts, fruit globose rugose when 

 dry rounded at the top with 2 pits. 



INDOOANGETIC plain, Lower HIMALAYA and NILGHIIRI MTS., a weed of cultivation. 

 DJSTUIB. : of the genus. 



Pale green, much branched. Racemes 1-2 in. Flowers |- in., whitish or rose- 

 coloured, tips purple. 



ORDER X. CRUCIFERJE. (By Hooker f. & T. Anderson.) 



Herbs, rarely undershrubs; juice watery, of ton pungent. inline 



and radical, the latter in a rosette, cauline alternate, exstipulate. Flower* 

 racemed, rarely solitary on scapes, or axillary. ,sV///.s 4, free, 2 later; 

 posite the placentas) often large and saccate at the base, imbricate. / 

 4, free, hypogynous, placed crosswise, imbricate. Si'tim-H* f) (rarely 1, 2, or 

 many) ; 2 outer opposite the lateral sepals ; 4 inner longer, in opposite pairs. 

 JJisk with usually 4 glands opposite the sepals. O/v//-// ^-celled by a pla- 

 cental membrane, or 1-celled, or with superimposed cellules : style short or 

 0; stigma simple or with 2 lobes opposite the placentas; ovules 1-2 or oo, 

 2-seriate on two parietal placentas rarely solitary and erect, Fruit either 

 a 2-celled 2-valved pod, the valves deciduous and leaving the seeds <>n the 

 persistent placentas (repluni), or indehiscent, or transversely jointed. Seeds 

 small, albumen ; cotyledons large, plano-convex or longitudinally concave 

 or folded, foliaceous in germination; radicle turne 1 up on the back of one 

 cotyledon (///I-//////;.///;, or facing the edges of both oiccuinlx-nt]. DISTRIB. 

 Genera 172 ; species about 1200 ; natives chiefly of temperate regions of the 

 Old World. 



Series A. 



Pods long or short, dehiscing throughout their length, terete, 4-angled or 

 compressed dorsally (parallel to the septum). 



TRIBE I. Arabideee. Pods narrow, long. Seeds usually 1 -seriate. 

 Cot t//' <lt'n* accumbent. (Pods sometimes short in 2, Purn/fi, f>, X.<t art tutu 

 and 10, Notoceras; seeds 2-seriate in Arabis glabra, and in some species of 

 2, Pan'ya.) 



* Sepals narrow, erect. VaUws without horns or appendages. Ftiymas erect, 

 connate or decurrent on the style (2-lobed in some species of 2, Parrya). 



Erect branched hoary herbs . . . 1. MATTHIOLA. 



Low alpine tufted scapigerous herbs 2. PARRVA. 



** Sepals broad or narrow. Stigma undivided or shortly 2-lobed. (See also 

 2, Parrya.} 



Sepals erect, lateral saccate. PToary leafy erect herbs . . . . 3. CHEIRANTHUS. 



Anthers of long stamens 1-celled. A minute herb 4. ATELAXTHERA. 



Sepals spreading, not saccate ; pods tumid, seeds minute 2- 



seriate. Flowers usually yellow 5. NASTURTIUM. 



Sepals not saccate; pods 4-angled; seeds 1 -seriate. Flowers 

 yellow 6. BARBAREA. 



