212 



XLVi. composites: ciciiosace.e. \_Lactuca 



** 



Pappiis in a single row. 



y 



yro 



3. H. maculdta L. {spotted C.) ; stem almost leafless solitar 

 nearly glabrous, leaves obovate-oblong undivided toothed (spot*^ 

 ted above), involucres slightly hispid. £, B. t. 225. AcbvrnI 

 phorus, Scoj). 



In open chalky and limestone pastures, rare. Suffolk • Cam 

 bridgeshire. Ormeshead, N. Wales. 2^. 7, S. — Zeare/ almost 



all radical, scabrous. Stem or scape with one, or rarely 3 5 laro-e 



deep yellow ^oz^ers and 2 or 3 small lanceolate scales or hracteas. ^ 



** 



Pappus pilose Jiliform. (Gen. 7 — 12.) ' 



7. Lactuca Linn, Lettuce. 



Achenes much compressed, with a long beak. Pappus y>i\o^q. 

 Receptacle naked. Involucre imbricated, cylindrical, few-flow- 

 ered, its scales with a membranous margin. — learned from lac 

 milk, which flows from this and many plants of the ti-ibe, when 

 broken. 



* 



Beak of achenes elongated (white). Keel of leaves pricMy. 



1. L. virosa L. (strong-scented Z.) ; leaves patent oblon^' 

 toothed or sinuate two-eared and amplexicaul at the base^ 

 flowers panicled, beak as long as the (black) achene. E. B 

 t. 1957. 



Banks and way-sides, especially in a chalky soil, 

 land : ' — - ■- _____ 



Rare in Scot- 



about Edinb., Dunkeld, Coldstream, Melrose and Stirling 

 Castle. $. 4—8. — Stems 3—4 feet high, erect, prickly, with 

 disi^xit leaves. Roo f -leaves oho\ ate, numerous. — The plant abounds 

 Ayith a milky and narcotic juice, whicb is considered by some prac- 

 titioners as a gentle and safe opiate. Flowers small, yellow. 



2. Jj.Scariola L. (prickly i.) ; leaves nearly upright lanceo- 

 late sagittate at the base sinuate ciliato-dentate, panicle leafy, 

 beak as long as the (pale) achene. E. B. t. 268. 



Wiaste ground, rare, Cambridgeshire; Southend, Essex ; Sussex 

 and the southern counties. %. 7, 8. — Of milder quality and paler 

 colour than the last, with more upright branches and leaves and pale 

 achenes. The Garden Lettuce is L, sativa L., not a native. 



o 



O. 



(least 



teeth, lower cauline ones pinnatifid, upper ones linear-lanceo- 

 late entire sagittate, flowers lateral with small floral leaves, beak 

 thrice as long as the fruit. E, B. t. 707. 



Chalky waste ground and salt-marshes, in the south-east of Eng- 

 land. ^, 7,8. — Whole />?a??,^ slender; branches twig^v ; the small 

 flowers may be said to be almost spicate. 



r 



** Beak short. Keel of leaves smooth. 



4. L. murdlis Less. (Iv?j4eaved Z.) ; florets 5, leaves lyrate^ 





\ 







t 



