CRUCIFER^. (MUSTARD FAMILY.) 85 



Leaves obovate or oblong. Petals oblong-spathulate entire. Pedicels 

 recurved ; silicles twice as large as those of A. montanum, strigulose^ 

 ovate ; style nearly as long as pod ; seeds vdngless — Spring — Her- 

 mon {Tristram), Mount Akdagh, northern Syria, and northward. 



I X Petals little if any Imiger than calyx. 



§ Silicles glabrous. 



16. A. miniiuum, Willd. .1 to .15, canescent-scurfy, dwarf, 

 branching from base. Leaves oblong-linear. Petals linear, retu^e. 

 Fruiting raceme elongated, dense ; pedicels erect ; silicles orbicular, 

 .0025 long retuse ; style one-sixth to one-fourth as long as pod ; seeds 

 narrowly margined — Spring — Fields ; Aleppo and northward. 



§ § 8ilicles scabrous with stellate hairs. 



17. A, umbellatum, Desv. .03 to .05, scabrous branching 

 at base, prostrate or ascending, branches nearly simple. Leaves linear, 

 or linear-oblong. Petals retuse. Fruiting racemes .01 to .02 long, 

 contracted, umlyel-Wke or conical ; silicles imbricated, ovate, .004 long ; 

 style short ; seeds narrowly margined — April and May — Roadside ; 

 El Kufr, Hauran. Northern Syria. 



18. A. Szo^Titsianum, F. etM. .02 to .1, appressed-canes- 

 cent with stellate hairs, branching from base, branches simple. Leaves 

 obovate to linear-oblong. Petals pale, narrowly linear-cuneate^ entire. 

 Fruiting racemes .015 to .05 long, cylindrical ; silicles densely imbrica- 

 ted, ovate, .003 to .004 long ; style short, seeds narrowly margined — 

 April to June — Mountains of Hauran, Antilebanon, Lebanon, Cassius, 

 to Aleppo, Aintab, and northward. 



19. A. strictnm, "Willd. .1 to .2, greenish-canescent, bran- 

 ching from base, branches simple. Leaves broadly oblong-linear, obtuse. 

 Petals oblong-oblanceolate, entire. Fruiting racemes .06 to .09 long, 

 cylindrical ; silicles loosely imbricated, elliiJtical^ sparingly hirsute ; 

 style short, conical ; seeds narrowly margined — Spring — Waste fields, 

 Ba'albek, Mar 'ash, and northward. 



20. A. campestre, L. .1 to .25, ashy or Fig. 31. 

 yellowish ; stems usually numerous, branching from 

 base and above. Leaves oblong-oblanceolate to oblong. 

 Petals bifid. Fruiting racemes .03 to .07 long ; pedi- 

 cels spreading ; silicles orNcula/r, .003 to .005 long ; 

 style one-fourth to one-sixth as long as pod ; seeds nar- 

 rowly margined — Spring — Fields ; everywhere. 



Var. genuinum, Boiss. Rays of stellate hairs 

 of pod short. 



Var. pilosnm, Post. Rays of stellate hairs of 

 pod long. 



Var. bir§utum, Post. Stellate hairs of pod in- ^ 



t&rmixed icith simple or double hairs arising from a tuber- j,^5ti„g^ceme 

 cU. {A, hirsutum, M. B.) of Aiyssum 



campestro. 



14 



