90 CRUCIFERuE. (mustard FAMILY.) 



often with one rudimentary cell ; valves turgid — Spring — Fields ; 

 common throughout. 



* ♦ * * Silicles ovate to elliptical, .001 to .003 long, wingless. Perennials. 



7. L.. Chalepense, L. If .3 to .5, pubescent or glabrescent ; 

 stems erect, corymbose at apex. Leaves oblong to oblong-lanceolate, 

 repand-dentate, those of root petiolate, of stem sagittate-clasping. 

 Silicles ovate, .002 to .003 long, rounded or someicliat tapering at hase 

 and apex ; style one-third as long as p}od — Spring — Fields ; common. 

 Too near the last. Intermediate forms of pods leticeen tJioseofthis and 

 the last species are to he sought. 



8. li. cra§§ifoliuiii, W. K. 11 .15 to .3, glabrous or puberu- 

 lent ; neck fibrous, branching into many panicvlate-corymbose stems. 

 Leaves fleshy, those of root petiolate, ovate to oblanceolate, entire or 

 sparingly toothed, of stem oblong to oblong-lanceolate, sagittate-clasp- 

 ing. Silicles ovate or elliptical, .002 long, reticulate ; stigma sessile — 

 Spring — Salt marshes ; Merj of Damascus. 



9. li, latifolium, L. If 1, or more, glabrous or puberulent, 

 paniculate above. Leaves oblong-lanceolate, entire or dentate, the 

 lower long-petioled, .15 long, the upper short-petioled or merely taper- 

 ing at sessile hase. Silicles ovate-orbicular or elliptical, .001 to .0015 

 long, sometimes refuse at base, glabrous or puberulent ; stigma sessile 

 — Summer — Marshy places, Lebanon, Antilebanon, and Damascus, 

 to Aintab and northward. 



10. l«. gramiiiifolium, L. If .4 to 1, glabrous, much 

 branched. Lower leaves and those of the last year's branches oUong- 

 »pathulate, crenate-dentate, or cut at base, upper stem- leaves linear 

 entire. Fruiting racemes .15 to .3 long ; silicles .0015 to .002 long, 

 ovate ; style short — Summer — Roadsides ; Hums to Antioch, Bitias, 

 and northward. 



***** Silicles elliptical, .003 long, apex retuse, nearly icingless. Biennials. 



11. L. perfoliatuin, L. @ .2 to .4, glabrous. Loicer-leaves 

 %-^-pin7iatisect into minute, linear-oMong Ivhes ; upper-leaves ovate, deeply 

 cordate-clasping. Silicles orbicular-elliptical, .002 to .003 long ; style 

 short — Spring — Roadsides and housetops ; Coelesyria, Antilebanon, 

 Damascus, and northward. 



40. ^THIOMEIMIA, R. Br. 



Calyx more or less bigibbous at base. Petals entire. Longer fila- 

 ments usually dilated, entire or toothed, free or connate in ^ pairs. 

 Silicles obcordate or obovate, winged or wingless, 1-celled, indehiscent, 

 or 2-celled dehiscent, with 1-3 ovules in each cell — Glabrous herbs 

 or shrubs, with pink, purple, or white, racemed or spiked flowers. 



* Tufted perennials. Silicles 2-celled ; cells 2-ovided, narrowly winged. 



1, M, oppositifoliiim, Labill. 2f .05. Leaves imbricated, 

 fleshy, obovate, .01 long. Silicles ovate-elliptical, .008 long, truncate, 

 retuse at apex, with exserted style ; f\micle adnate at base — Summer 

 — Alpine summits of Lebanon. 



