692 437. Thlaspi. 80. CRUCIFER^. Pl.ex.iliaJ 



3. Thlaspi perfoUatwm. Thorow treacle-mustard. 

 Siliculce reverse heartshape, winged ; style enclosed, very 



short; stem-leaves heartshape, slightly toothed, bald. 



Thlaspi pcrfoliatura minus, Rait Syn. 305, 6; Park. 837. 

 Thlaspi minus Clusii, Ger. em, 268, 7. 

 Thlaspi rotundifoiium, Ger. em. 266, 1. . 

 Thlaspi perfoliatum, Lin. S. P. 902. 

 Round-havcd jniistard. 



Chalky pastures ; annual ; April and May. 



Stem branched, spreading, on poor soils simple ; leaves 

 glaucous, blunt ; root-leaves ovate ; corymhus close, smally 

 growing to a very long raceme ; petals small;, white. 



b. Capsella. SiliailcB wingless. 



4. Thlaspi cimeatum. JVedgeshape treacle-vmstard, 

 Siliculce reverse heartshape, wedgeshape; root-leaves pin- 



natifid. 



Bursa pastoris, Rail Syn. 306; Ger. em. 276, I. 



Bursa pastoris major vulgaris, Park. 866. 



Thlaspi Bursa pastoris, Lin. S. P. 903. 



Thlaspi cuneatum, Siokes Hoi. M. M. 3,434. 



Nasturtium Bursa pastoris, Roth Germ. 1,281. 



Shepherd's purse. Poor 7nan's spermaceti. Pick-purse, Case-weed. 



Walls and road-sides; annual; March to October. 

 Stein branched; root-leaves pinnatifid; stem-leaves oblong; 

 petals white : varies much in size, according to the soil. 



XXI. 438. NASTURTIOLUM. Bobart. Dittander. 

 Siliciiloi elliptic, not nicked ; valves 2, boatshape, wing- 

 less; cells '■2-s,eQdied',Jilaments toothless. 



Nasturtiolum montanum. Mountai7i dittander. 



Leaves pinnate, not in the least cut; petals not longer 

 than the calyx; silicidce blunt each way; stigma sessile. 



Nasturtium q. Nasturtiolum montanum annuum tenuissime divisum 

 Bobart, Raii Syn. 304, 4. 



Lepidium pelraeum, Lin. S. P. 899. 

 Lepidium Linnaei, Crantz Austr. 1,7. 

 Hutchinsia petraea, R. Brown Ilort. Kew. 82. 



Limestone rocks ; biennial ; March and April. 

 Stem 2 in. high, branchy ; leaves bald ; petals white. 



XXII. 439. TEESDALIA. R. Brown. Heath-cress, 

 Silicula; nicked; valves boatshape; cells 2-seeded ; ,;^/a- 



menfs with a small scale at the bottom, on the inner side. 



