Fig. 35. 



Fruiting raceme of 

 Biscutella Columnae, 



CHUCIFER^. (mustard FAMILY.) 93 



42. HELDREICHIA, Boiss. 



Calyx equal at base. Petals entire, 

 Longer filaments winged ; wing tapering 

 or ending in a lateral tooth. Silicles flat- 

 tened, almost twin, obovate to transversely 

 ovate, truncate at apex, two-celled, dehis- 

 cent. Valves helmet- shaped, keeled, wing- 

 less ; cells 1-ovuled ; seed flattened, not 

 margined. — Perennial, glabrous herbs, with 

 white flowers. 



H. toiiplevrifolfa, Boiss. 2f .1 to .3 ; 

 root-stock slender, creeping, branching at 

 apex ; stems divaricately branching from 

 base. Leaves fleshy, obovate to spathulate, 

 petioled, entire, the uppermost linear, 

 obtuse. Silicles transversely ovate, .004 long, 

 ,008 broad, rounded at base, truncate at 

 apex, with short, apiculate style — Sept. — 

 Dhohr-el-Qodhib. 



Var. siitotrilolDa, Boiss. Pod somewhat trilobed, by enlarge 

 ment at base of style — Top of Lebanon. ^ 



43. TMI.ASPI, L. Penny-Cress. 

 Calyx equal at base. Petals equal, or in unequal pairs, entire. 

 Stamens free, toothless. Silicles flattened, obcordate-orbicular' oblon» 

 or obtriangular, generally notched at apex. Valves boat-shaped^ 

 ovate.— Annual, biennial, or perennial herbs, with auricled, clasp- 

 ing leaves, and white or pink flowers. ' 



* Wing of silicles surrounded ly a prominent nerve. 

 t Pods orUcular ; sinus narroic, slit-lihe. 



1. Til. torevicaaiBe, Boiss. et Ky. © .03 to .05. Root-leaves 

 . small, petioled, ovate ; stem-leaves nearly entire, ovate ; auricles acute. 



Petals white, retuse, once-and-a-half as long as calyx. Fruiting racemes 

 capitate; silicles .008 long, with reticulated wings ; stigma sessile ; 

 cells 4:-6-seeded— May— Subalpine regions of Lebanon and Antilebanom 



tt Pods obcordate, with broad sinus; cells 4:-ovuIed. Loic herds. 



2. Til. microstylum, Boiss. ©or (2) .08 to .1 ; stems many, 

 ascending, short. Root-leaves petiolate, ovate ; stem-leaves claspinc 

 with acutish auricles. Fetuls jjale /les7i-colo7'ed, twice as long as calyx^ 

 silicles oUong-subcordate, .008 long, tcith someiohat narrow sinus; wino-s 

 nerved at apex, broader than cell ; style one-fourth as long as sinus • — 

 May — Alpine and subalpine zone of Lebanon and middle zone of 

 Cassiug. 



3. Til. perfoliatum, L. © Shemr-Murah .1 to .3, branching 

 from base, stems ascending, or erect. Root-leaves ovate-cordate, 

 ovate, obovate or elliptical, petiolate \ stem-leaves sometimes petio- 

 led, usually oblong-lanceolate, clasping, with rather obtuse auricles. 

 Petals, white, usually irregular, about twice as long as calyx ; silicles 

 obovate-orbicular, .008 long; stigma sessile — March to May — 

 Fields ; common everywhere. 



