MACLOSKIE: CRUCIFER^E. 447 



by spikelets on rather long pedicels, with a rather large bract. Flowers 

 small, white. Capsule acutely elliptical, the cells i-2-seeded. 



Patagon., Chubut, near Lago Fontana, and Lago Paz; and W. 

 Patagon., by Rio Aysen. 



1 8. SOPHIA. Adans. 1735. (Sisymbrium Linn. 1735, Descttrainea 



Webb. & Earth. 1836.) 



Silique linear or linear-oblong ; flowers on long pedicels, racemed, style 

 mostly short. Seeds small, wingless, i-2-seriate ; cotyledons incumbent. 

 Annual or biennial herbs, rarely shrubby, with bipinnatifid, or dissected 

 leaves, and forked pubescence. 



Species 12, in the N. Temperate Zone, the Canaries, and the Andes. 



KEY TO THE SPECIES. 



(The following analysis of the Patagonian forms of this genus is chiefly after Spegazzini.) 

 Ai. Pubescence entirely stellate. 



b\. Stigma long-styled. deserticola. 

 b2. Stigma sessile. 



c\, Siliques glabrous. sophia. 



c2. Siliques stellate-puberulous. cumingiana. 

 A2. Pubescence glandular on the stem, stellate on the leaves. 



b\. Leaves bipinnatifid, lobes subentire. pinnata. 

 bz. Leaves tripinnatifid, lobes toothed. 



c\. Siliques glabrous. glabrescens. 



C2. Siliques stellate-puberulous. tenuissima. 



b$. Leaves with glandular and forked hairs intermingled ; pinnately parted, the segments 

 multifid. heterotricha. 



A$. .Pubescence entirely glandular. Siliques glabrous. Bipinnatifid. glandulifera. 



A^.. Leaves fascicled at nodes, with forked hairs on under surface ; pinnatifid. Siliques very 



long, vermicular. subscandens. 

 A$. Glabrous or with forked hairs. Leaves dentate to pinnatifid ; the lower petiolate, the cauline 



sessile or auricled. sagittata. 

 A6. Glaucous. Hairs on leaves all stellate ; glandular on pedicels and sepals. Leaves bipin- 

 natifid ; the segments apically lobed. glaucescens. 



\. S. CUMINGIANA (Fisch. & Mey. sub Sisymbrium.] 



Plant ash-colored, with tripinnatifid leaves, and dense terminal racemes. 

 Petals scarcely equalling the sepals. Pubescence stellate. Siliques as long 

 as the pedicels, stellate-puberulous. Stigma sessile. Seeds 2-seriate. 



(Chili) ; Patagon., near Lago Argentine. 



