1284 SYNGENES. .EQUAL. 1438. Lactuca, 



dichotomies. 

 Plumieri* 



•tnacrophyl- 

 lus, 



• caruleus. 



alpinus. 



leucopbaust 

 Jloridanusm 



acttminatusi 

 Pallidas, 



Rbiricusl 

 tataricus* 



sattva. 



<rifpa> 



Root-leaves ruiicinate : fteffl forked, nearly Teaflefs : pe- 

 duncles not thickened at top. 

 Arabia. VahU fymb. 2* p. 89. Scofzonera. 



Peduncles naked : flowers panicled : leaves runcinate. 

 Pyrenees. Corol with a Tingle row of florets. 



Peduncles hairy, naked : flowers panicled, leaves lyrate^ 

 heart-fhaped at the bafe, hairy underneath. 

 North America. Root tuberous : flowers blue. 

 Peduncles briftly, naked, 1 -flowered racemed, with bractes : 

 leaves runcinate, with the terminal bafe livid and large, 

 glaucous underneath. 

 High paftures. Flor, Dan. t. 182. S. canadenfts. Sp. pi. With* 



Peduncles fcaly : flowers racemed : leaves runcinate, point- 

 ed, glabrous : item fimple. 

 Lapland. Smith, ic. ined. tab. 21. 



Peduncles fcaly : flowers racemed : leaves rancinate, point- 

 ed : flem in a wand-like panicle. 

 North America. Flowers bluiflj-whitc. 



Peduncles fomewhat fcaly, panicled : leaves iyrate and run- 

 cinate, denticulate, petioled. 

 Virginia, Canada. Flowers fmall blue. 



Peduncles fomewhat fcaly, panicled : root- leaves fome- 

 what runcinate ; ftcm-leaves ovate, pointed, petioled. 

 North America. J acq. hort. 3./. 367? Laftuca. 



Raceme compound, terminal : leaves lance-enfiform, clafp- 

 ing the flem, toothed. 

 Canada- Sp. pi. 119. Lattuca canadenfis. 



Peduncles fcaly : flowers corymbed : leaves lanceolate, 

 feflie ; the lower-ones runcinate and toothed, upper- 

 ones very entire. 

 Siberia. Gmel. Sib. 2. tab. 3. Leaves often entire. 

 Peduncles naked: flowers in corymb-like panicles : leaves 

 lanceolate, runcinate, tapering to the bafe. 

 Tartary, Siberia. Leaves with a white rib. 



1438. LACTUCA. Receptacle naked: calyx im- 

 bricate, cylindrical, with a membranaceous margin : 

 down fimple, pedicelled : feeds unarmed. Lettuce. 

 Leaves rounded, thofe of the ftem heart-maped : ftem co- 

 rymbed. 

 Blackball, t. 88. Moris. $.fec7. 7. t.z.f. 1-9. 



Leaves finuate and crenate, toothed, undulate, curled \ the 

 radical-ones hairy on the keel : florets 5-parted. 

 — Roth abb. 24. Bauh,p\n. 123. 



