18 



rf" 



Periijutli 4 mm. or more 

 long- 



w « 



External glands not present : — 

 Bracts equal in lengtli to 

 flowers, rouiided on 

 back, minutely serru- 



T . orientale. 



late 



--- w-^ vvr 



Bracts longer ilian flowers, 

 teeled, margins mem- 



T, macro gyne 



branous scabridulous. T. lohelioides 

 Bract margins entire, glabrous : 

 External glands scarcely visi- 

 ble:— 



Bracts keeled, leaves erect., 2\ Goet.zeanunu 



Bracts rounded on back, 



leaves recurved 



T, resedoiJes. 



External glands conspicuous : 

 Plants slender, leaves nar- 



rowly linear, curved... T.Junodn. 

 Plants stout, leaves straignt : - 

 Perianth over 4 



to 



mm. 



long, segments flat 

 without hood, bracts 

 elliptic - lanceolate, 

 obtuse 



Perianth 3 mm. long. 



T, coriarium. 



with 



bract 



acute 



deep 



hood, 



s 



lanceolate. 



Styles very short, stigma subsessile,' 

 plants densely leafy . 



T. nigrum. 





stigma sessile : 

 Plants branching from tlie base 



leafy, periantli 2-8-3-5 mm 

 long .. . ... 



Plants brandling above, sparinglv 



T. aster ias. 



B.Ilo 



^::fi,v';-:l!5!!;.!i,'"-; '-s- ^- Mmioi,ie,. 



ar- 



late cymiiles in bract axils 



ranged in racemes : 

 Leaves witli recurved tips 

 Leaves straight: — 



Bracts longer than cynuiles, adnata 



• • • 



T. resedoides 



!':''.r'fj";?""!'.i'«i«"'-ies.. r.Burkd. 



Bracts shorter than the cymules, 



.slightly adnate to pednncles • - 

 Kacemes elongate, distinct, peri- 



R 



ajiHi glands conspicuous, 

 style reaching- to top of 



anthers ^ 



• • • 



* • 



• * 



of 



T. cornigerum 

 T ^ palliolatum 



