194 45. COMPOSITE. 



phyll. lax oblong bristly on the keel glabrous on the margin, fr. 

 constricted just below the pappus. E. B- 196. St. 1 3 feet 

 high, branched above, rather corymbose, very rough. Florets 

 yellow. Dry banks. B. VII. IX. E. I. 



40. HELMINTHIA Juss. Ox-tongue. 



1. H, echioides (Gaert.) ; hispid with rigid 3-fid and hooked 

 hairs from tubercular bases, st. erect, phyll. 5 ovate-cordate. 

 E. B. 972. St. 23 feet high, branched, covered, as well as the 

 leaves and involucre, with strong prickles springing from white 

 tubercles and with 3 minute hooks at the apex (glochidate). L. 

 clasping. Dry banks. A. VII. IX. 



Sections. LACTUCE^E. Receptacle generally without scales. 

 Pappus filiform, deciduous, never feathery nor dilated at the base. 

 Fruit compressed. 



41. LACTUCA Linn. Lettuce. 

 * Beak elongated, white. Leaves with a bristly keel. 



1. L. saligna (L.) ; upper I. linear entire acuminate with a 

 sagittate base, lower 1. pinnatifid, beak twice as long as the fruit. 

 E.B. 707. St. 2 feet high, slender, wavy, slightly branched. 

 Heads in small alternate tufts forming long clusters. Florets 

 yellow. Chalky places and near the sea. B. VII. VIII. E. 



2. L. virosa (L.) ; I. horizontal oblong auricled and clasping 

 mucronate-dentate or sinuated, beak equalling the black fruit. 

 E. B. 1957. St. 24 feet high, leafy, branched above, panicled. 

 Heads scattered, with many heartshaped acute bracts. Plant 

 full of acrid milky juice. Dry banks. B. VII. VIII. Acrid 

 Lettuce. E. S. 



3. L. Scariola (L.) ; L upright arrowshaped at the base and 

 clasping sinuate, beak equalling the pale fruit. E. B. 268. St. 

 2 5 feet high, leafy, panicled. Heads scattered with many 

 heartshaped bracts. Juice rather less acrid than in the preceding. 

 Waste places, rare. B. VII. VIII. Prickly Lettuce. E. 



** Beak short. Leaves with a smooth keel. 



4. L. muralis (DC.) ; florets 5, 1. lyrate-runcinate angled and 

 toothed clasping, terminal lobe largest angled, beak much shorter 

 than the fruit, heads panicled. Prenanthes Sm., E. B. 457. 

 St. erect, a foot high, smooth, round, hollow. Florets bright 

 yellow. Fruit black. Banks and old walls. A.? VII. E.I. 



