ClltTCIFERJ5. (^rUSTARD FAMILY.) 71 



15. SISYMBRIUM, All. Ped. PIedge-Mcstard. 



Calyx erect, or spreading, generally equal at base. Petals clawed. 

 Pod& flattened or terete, 4-6-sided ; stigma capitate, or obsoletely bi- 

 lobed — Annual or biennial herbs with yellow, white, or pink flowers. 



* Floicers 0.002 lo7ig, cream-colored, or lohite. Pods flattened., 1-nerved, 



1. S. piimilum, Steph. 0.02 to 30, scabrous with short, 

 branching hairs. Root-leaves obovate-oblong, sinuate-dentate, or pin- 

 natifid ; stem-leaves oblong, sagittate, entire. Flowers cream-colored. 

 Pods 0.015 to 0.03 long, 0.001 broad, spreading, sJiort-pedicelled, incur- 

 ved, puberident, longitudinally veined — Spring — Aleppo, Damascus, 

 and walls of Jerusalem, to Arabia Petrsea, and eastward. 



2. S. Tlialiaiiiim, L. Mouse-ear Cress. 0.30, sparingly 

 pilose, with simple, or branching hairs. Root-leaves rosetted, oblong, 

 tapering to a petiole ; stem-leaves linear-oblong, sessile ; all remotely 

 denticulate. Flowers white. Pods 0.015 to 0.02 long, 0.001 broad, 

 spreading, lo?ig pedicelled (0.012), straight, or incurved, glabrous — 

 Spring — Bikfaya, Lebanon ; Husn Suleiman, Nusairy Mountains. 



3. S. nudum, Belang. 0.05 to 0.12. Leaves all radical, 

 minute, oblong, entire, or somewhat dentate. Flowers cream-colored. 

 Pods 0.02 to 0.03 long, O.OOl broad, short jiedicelled, erect — Spring. 



Var, toraeliycarpum, Boiss. Pods 0.015 to 0.02 long. Valves 

 longitudinally veined — Lebanon. 



* * Flowers 0.003 long, jjinh. Pods cylindrical, 1-nerved. 



4. S. Scliimperi, Boiss. © 0.08, ashy-puberulent. Leaves 

 bipinnatisect, with small oblong, obtuse lobes. Raceme few-flowered. 

 Pods 0.04 long, 0.001 broad, short-pedicelled, spreading, somewhat re- 

 curved, stellate-jmderulent — Spring — Moab {Tristram), Sinai, and 

 eastward. 



* * * Moicers 0.003 long, yellow. Pods cylindrical, 1-nerved. 



5. S. Sophia, L. 0.40 to 1, ashy-puberulent or glabrous. 

 Stem branching. Leaves M-t/ri-pinnatisect, into minute oNong-linear, 

 acute lohes. Racemes many-flowered. Pods 0.02 to 0.04 long, 0.001 

 broad, erect-spreading, glabrous ; pedicels 0.01 long — April to June 

 — Roadsides and waste places ; common throughout. 



* * * * Flowers from 0.002 toO.OH long, yellow. Pods terete, d-nerved. 



t Fruitiiig pedicel very short, as thick as p>od. Septum thick. 



6. S. Columnse, Jacq. (|) 0.30. to 0.50, more or less loosely 

 hirsute. Leaves runcinate-pinnatipartite ; lobes of lower leaves o^^aie- 

 dblong, dentate, with an ascending auricle at dase ; lohes of upper leaves 

 linear or lanceolate, terminal hastate. Flowers 0.006 long ; calyx erect. 

 Pods 0.09 long, 0.0015 broad, horizontal, sparingly hirsute or glabres- 

 cent —- May to July — Fields and roadsides ; Lebanon, Antilebanon, 

 and Grilead to Damascus, Hums, Aintab, and northward. 



T. S, Pannonicum, Jacq. 0.30 to 0.50, more or less loosely 

 hirsute below. Lower leaves runcinate-pinnatipartite ; lobes ollong- 



