Prenanthes muralis. Ivy-leaved wild 



LETTUCEe 



PRENANTHES Linnai Gen. PL Syngenesia Polygamia ^qualis. 



Recept. nudum. Calyx calyculatus. Pappus fimplex, fubfeflilis. 

 Flofcull limplici ferie. 



Rail Syn. Gen. 6. Herb^e flore composito, natura pleno lactescentes, 



PRENANTHES muralis flofculis quinis, foliis runcinatis. Linn. Syjl. Vegetab. p. 596. Sp. PL nai. 

 FL Suec. n. 692. 



PRENANTHES foliis ferratis pinnatis, pinna fuprema triangulari trilobata. Haller* hljl, n. 18. 



PRENANTHES muralis. Scopoti FL Cam. n. 964. 



LACTUCA fylveftris murdrum flore luteo» /. B. II. 1004. 



SONCHUS lasvis laciniatus muralis parvis floribus. Bauhln.Pin. 124. 



SONCHUS Levis muralis. Ger. emac. 293. 



SONCHUS lasvis alter parvis floribus. Park. 805. Rail Syn. p. 162. Ivy- leaved Sow- thiftle, or Wild 

 Lettuce. Hudfion. FL Angl. ed. 2. p. 338. Lightfoot FL Scot. p. 431 . 



RADIX perennis, ramofa, pallide fufca, ladtefcens» f ROOT perennial, branched* of a pale brown colour, 



I and milky. 



CAULIS pedalis ad tripedalem, ereclus, fimplex, fo- ? STALK from one to three feet high, upright, fimple, 



liofus, fuperne fubflexuofus, teres, glaucus, | leafy, fomewhat crooked towards the top) 



purpurafcens. % round, glaucous, and purpliih. 



FOLIA radicalia Soncho oleraceo perfimilia, inferne pur- | LEAVES next the root very like thofe of the common 



purea, caulina alterna, amplexicaulia, patentia. % Sovv-thiftle, purple on the under fide, thofe of 



I the fialk alternate, fpreading, and embracing 



% it. 



FLORES parvi, lutei, erefti, paniculati. | FLOWERS fmall, yellow* upright, growing in a 



I panicle. 



PANICULA ampla, nuda, ramofiffima, purpurafcens. % PANICLE large, naked, exceedingly branched, and 



I purpliih. 



CALYX communis cylindraceus, glaber, purpurafcens, % CALYX: the common Calyx cylindrical, fmooth, pur- 

 fquamis cylindri numero corollularum, fquamis | plifh, the fcales of the cylinder as numerous 



ad bafin cylindri tribus breviffimis inaequali- % as the florets, with three, very Ihort, unequal 



bus, fig. 1, I fmall ones at its bafe, Jig. 1. 



COROLLA compofita, Corollula: hermaphroditae pie- | COROLLA compound, Florets hermaphrodite, ufually 

 rumque quinque, asquales, in orbem fimpli- | five in number, equal, forming a iingle circle, 



cem pofitae, latiufculae, nervofae, quinqueden- | broadun, ribbed, terminated by five teeth^.a! 



tatae, fig. 2.. % ■ 



STAMINA: Filamenta quinque, capillaria, breviffima, | STAMINA: five capillary Filaments, very mort and 

 flava; Anthers cylindraceae, tubulofae. y yellow; An therte forming a hollow cylinder. 



PISTILLUM: Germen fubovatum; Stylus nliformis, |PISTILLUM: Germen fubovate; Style filiform* 

 ftaminibus longior; Stigma bifidum, re- | longer than the ftamina ; Stigma bifid and 



flexum, fig. 3. % reflexed, Jig. 3. 



SEMEN oblongum, bafi acuminatum, nigrum, ftria- | SEED oblong, pointed at the bafe and ftriated : Down 

 turn : Pappus breviffime petiolatus, fimplex, t ftanding on a very fhort foot-ftalk, fimple, 



fig. 4. ; lente zu&.fig. 5. ? fig. 4. ; magnified, fig. 5. 



Some of the old Botanifts confidered this plant as a haBuca ; others as a Sonchus. It approaches nearefl: to the 

 former, both in its fructification and habit, not but the foliage is very like that of the Sonchus oleraceus. Linnjeus, 

 from the paucity of its florets, makes a difnncf genus of it, though number feems fcarcely fufficient to conftitute 

 a generic character. This paucity of florets (there being feldom more than five) at once diftinguifhes it however 

 from all its kindred ; but at the fame time we have known it not a little to puzzle ftudents beginning to learn the 

 claffes, and who had ftudied them from fuch flowers as Dandelion. 



It is not a very common plant with us, but is met with occasionally on walls, in woods, and other fhady places 

 We obferved plenty of it this year on the outfide of the pales which terminate the Terrace at the Spaniard, Hamp-* 

 ftead-Heath, on the declivity towards Lord Mansfield's little wood. 



It flowers from July to September. 



