117 



ATHYSAXUS PUSILLUS Greene. 



Hirsute-pubescent; sts filiform, 



branching from the base, the branches 

 mostly ascending, unilaterally race- 

 mose throughout; Ivs few, ovate, spar- 

 ingly toothed, 1 cm long; fls minute, 

 often apetalous; pols lenticular, more 

 or less uncinate hispid, 2 mm long or 

 less. 



Abrams, Fl LA 176. Frequent in the 

 chaparral belt throughout our range. 

 Mr-My. 



Vancouver Island: SD! Raja! 



Thysanocarpus pusillus Hooker, Ic PI 

 t 43; Hook & Arn. bot Beechey 324. 



Thypanocr-irpus oblongifolius Nuttall. 

 in T" & G Fl 1:118. 



Genus ALYSSIM Tournefort. 



Pod oval or orbicular, compressed; 

 valves convex and nerveless: sds 1 or 

 2 in each cell; cotyledons accumbent. 

 Sep equal: pet .w or y: longer fil often 

 toothed: low herbs, stellate-canescent, 

 mostly with simple Ivs. Nearly 150 

 species, natives of the old world. 



Konig Adans. 

 ALYSSUM MARITIMUM Lam. 



Ascending or sometimes procumbent, 

 freely branching, 1-3 dm high, min- 

 utely pubescent with appressed hairs; 

 basal leav-p oblanceolate, narrowed 

 into a petiole: fls w, fragrant, about 

 4 mm bivDal; fr'ing pedicels ascending, 



118 



Ivs ovate and entire, or pinnatin 1 with 

 several oblong lobes: upper Ivs linear 

 an 1 often entire; silicle elliptic-oblong, 

 obtuse. A small slender-branching 

 glabrous ann.. 2-6 i hi. 



Parry, bot obs Wyo 4. 



Type locality: "shady grassy plains 

 of th.A Oregon, near the junction of the 

 Wahlamet." 



Bursa divaricata K. Rev gen pi 1:21 

 (1891). 



Hutchinsia procumbens Desv. 



Capsella elliptica Meyer. 



Hymenolobus divariratus and H. 

 erectus Nuttall, in T & G Fl 1:117 

 (1838). 



Genus BRASSICA Linnaeus. 



Mustard. Erect branching an or bi- 

 ennial herbs, with pinnatifid Ivs, those 

 of the st dentate or often nearly en- 

 tire, and showy y fls in elongated 

 cemes: siliques elongated sessile on .* * 

 receptacle, terete or 4-angled, tippe 1 

 with a persistent usually l-seedel 

 beak; valves 1-3-nerved: stig truncate 

 or 2-lobed: Sds in 1 row in each cell, 

 globose: Cotyledons conduplicate. 

 BRASSICA ADPR.5SSIS Boiss. 



Parish, Zoe 1:57. 



*None of the leaves clasping the 

 stem. 

 BRASSICA NIGRA Koch. 



Erect 1-3 m high, freely and widely 



nearly througdiout the year. Sweet 

 alyssum. 



Konig maritima R. Br. 



Alvams, Fl LA 180. 



Lobularia maritima Desv. 



Genus CAPSELLA Moench. 



Erect ann herbs, pubescent with 

 forked hairs: basal Ivs tufted: fls race- 

 mose, small, w: silicles cuneate-obcor- 

 f'ate. obcompressed. the valves keeled: 

 Sty short: Sds num in each cell., mar- 

 ginless: Cotyledons accumbent. Shep- 

 herd's Purse. 



Bursa Weber. 

 CAPSELLA BURSA-PASTORIS Medic. 



Erect, branching, 15-40 cm high, 

 ent below, mostly glabrous 

 above; basal Ivs lobed or pinnatifid, 

 forming a rosette, 5-12 cm long; cau- 

 line Ivs few, lanceolate, auricled, den- 

 tate or entire: fls 2 mm broad: pedicels 

 slender, " spreading or ascending, 10-14 

 mm long in fr: pods triangular, more 

 or less deeply emarginate at apex, 

 rarely truncate, 4-6 mm long. Com- 

 mon weed. 



Type locality: European. 



Bursa Bursa-pastoris Britton. 



Abrams Fl LA 175. 



Bursa pastoris Wigg, Prim Fl Hols 

 47 (1780). 



Davidson, Erythea 1:57. LA. 

 CAPSELLA DIVARICATA Walpers. 



Erect or subdecumbent, branched; 



; seg all den- 

 tate; upper Ivs shon-petioled or ses- 

 sile, pinnatifid or dentate or the upper- 

 most entire; fls 6-10 mm broad; pedi- 

 cels slender, 4 mm long in fr; pods 

 narrowly linear, 4-angled, smooth 10-15 

 mm long. 1 mm '.vide, appressed against 

 the st beak slender 2-4 mm long; sds 

 dark brown. 



Abrams, Fl LA 170. Common in 

 poorly cultivated fields, especially in 

 adobe soils. Ap-My. 



Davidson. Erythea 1:56, LA Co. 



Hall. U 81. 



Parish, Zoe 1:.". 



Cruz; Guad; Black mustard. 

 -F-andegee, Zoe 1:112. Cat. 



Koch, in Roehl Deutschl Fl Ed 3, 

 4:713 (1833). 



Type locality: European. 



Sinapis nigra L sp PI 2:668 (1753). 

 BRASSICA ALBA Boiss. 



Erect, branching above, 3-10 dm 

 hiarh. more or less pubescent with sim- 

 ple hairs; Ivs all pinnatifid or the upper 

 only dentate; pods spreading, pubes- 

 cent, tipped with a flattened black of 

 about equal length: sds pale y. 



Abrams, Fl LA 170. 



Davidson, Erythea 1:57, Monica 

 (Hasse). 



White Mustard. 



**Upper leaves clasping. 

 BRASSICA CAMPESTRIS L. 



Sts 3-10 dm hi, glabrous and glau- 

 cous or rarely slightly pubescent be- 



