82 CRUCIFEK^. (mustard FAMILY.) 



1, K.. L<ybica, Viv. © Prostrate. Leaves lanceolate-linear, 

 obtuse. Silicles beset with 2-parted hairs ; cells 4-5 seeded — Sj)ring 



— Desert of Moab {Tristram). Et-Tih. 



2. K, Aratoica, Boiss. DhahMydn. Prostrate. Leaver-ob- 

 long-spathulate or linear, obtuse, tapering into a petiole. Silicles 

 sparingly hairy ; cells 1-2 seeded — Spring — Borders of Et-Tih and 

 southward. 



To this genus belongs the Sweet Alyssum, K. raaritima, L., which 

 is found sparingly, escaped from gardens. 



32. ALYSSUM, L. Alimtn. 



Calyx erect, equal at base. Petals entire or refuse, yellow or 

 cream-colored. Silicles obovate, orbicular, elliptical, or lenticular ; 

 cells 1-3 or 4-6 ovuled ; septum nerveless with fine transverse venules 



— Annual or perennial, stellate-woolly or scurfy herbs. 



* Silicles flattened or convex, cells 1-ovuled. Filaments toothed. 



t Perennials, 



\ Low .1 to .3. Lower-leaves less than .01 long. Silicles not over .004 long. 



1, A. ali>e§tre, L. If Shmbby at base. Leaves obovate or 

 oblong, the upper often lanceolate-linear. Flowers .002 long ; petals 

 obovate, sometimes refuse. Fruiting racemes rather long., dense. Sili- 

 cles olomte, to O'Date-ellixMcal, .002 to .003 long, .0015 to .002 broad, 

 more or less stellate-woolly ; style nearly as long as pod ; seeds wing- 

 less — Summer — Alpine and subalpine regions of Lebanon, Antileba- 

 non, Amanus, and northward. 



Var. g-eiminiiin, Boiss. Appressed-canescent ; stems slender, 

 .1 to .2 long, prostrate er ascending, tufted. 



Var. siiffriiticens, Boiss. Appressed canescent ; stems ascend- 

 ing, .2 to .3. 



Var. obOTatiiiii, Boiss. As in preceding, but leaves all obovate- 

 spathulate, obtuse. 



Var. miiiutifloriiui, Boiss. Scurfy. Summit of Sunnin. 



2. A. concleusatniii, Boiss. et Haussk. 2J! or (2) Scurfy, 

 '?/ ichite ; stems indurated at base, ascending, .12. Leaves minute ; 



obovate-obloug, obtuse, tapering into a j^etiole. Flowers larger than 

 in last ; petals obovate. Fruiting racemes umbel-liJce, contracted, cofym- 

 hose. Silicles narroicly ellvptical, .004 long, .0015 broad, tapering at 

 base, obtuse ; style one-third to one-half as long as pod — Summer 

 — Subalpine regions of Amanus, and Akherdagh and northward. 



X X Tall, .3 to .8. Lower-leaves more than .01 long, obovate or linear- 

 spathulate, Silicles not more than .005 long. 



3. A. constellatiim, Boiss. 21 .5 or taller, scurfy ; stems 

 herbaceous, reddish, loosely corymbose paniculate. Leaves oblong- 

 spathulate, .04 long, .01 broad, tapering gradually into a j)etiole. 

 Fruiting racemes contracted, umbel-like, corymbose ; silicles scurfy. 



