13 



Leaves flesliv, terete ... ... T . scandens. 



Leaves and bracts less tliaii 6 luiu. 



X.\J XX^iL •«• vtt t*» ■«« 



<S. Flowers in loose pnnienlate inflores- 



cence.s : — 



T , galioides. 



Plants scabrid ... 7\asper'ffoUiim, 



Plants }>Iabrous : — ' 



Leaves rcdueetl, about 2 mm. 



lun^ ... ... ... ,,. T. cory inhtdi genim. 



Leaves well developed 0*8-4 cm. 



long:— . . 



All leaves about 8 mm. long, 



numerous and recurved, 



bracts only slio-htlv ad- 



nate to peduncles ... T . scinarrosiim. 



Lower ]eaves 1-2-4 cm. long, ; 



all leaves ascending, bracts 



adnate fgr soniu distance 



to peduncles : 



Stems sharply ribbed, leaves 



and bracts keeled, cy- 



mules lax ... ■ ... T, florihunditvi. 



Stems slightly ribbed, leaves 

 and bracts more or less 

 rounded on back^ cy- 

 mules comj>act ... : T, lyallidum. 



3. Flowers arranged in small terminal 



cymose heads or clusters: — 

 Branches fairly densely leafy; leaves 



well-developed, fruits not or 

 s(.*arcely leticulate between iibs, 



bracts glabrous :■ 

 Branches erect, periantli without 



external glands T\ quijiquefi-ornm. 



Blanches spreading, periantli with 



conspicuous external glands: — 

 LoaA'es imbricate, Inacts and brac- 



teoles longer than flowers, 

 inflorescences inconspicuous ,. T. ciipressoidcs. 



Leaves lax, bracts and bracteoles 



equal to or shorter thaii 

 flowei'S, inflorescences con- 

 spicuous ... ... .-. T. ertcae folium, 



, Bra nches very sparingly leafy or nearly 



leafless, leaves small and bract- 

 like, bract-margins finely serru- 

 late : 

 Siigrna subsessile, bracts equal to or 



longer than flowers: — 

 External glands conspicuous,^ 



bracts acutely acuminate ... T. nigromontanum. 

 External glands not seen, bracts 



acute : — 

 Perianth - sejrments glahnms, 



lower leives 2 4 mm. long T AeptocauJe. 



