4-14 S9. COMPOSITE, A. PLex.ml 



d. Pappus hnirlikc, stipitated ; scales of the periclme in a 

 single row. 



Bractece many, loose Taraxacum. 185. 



BractecB few ; pericline cylindrical ; 

 calathide many-flowered Lactuca. 180. 



BractecB few; pericline cylindrical; 

 calathide 5-flowered Chondrilla. 178. 



e. Pappus feathered, sessile ; cUnanlhiis naked; 

 pericline imbricated, 



Akenium streaked lengthways ; 

 pappus unequal Thrica. 188. 



Akenium streaked lengthways ; pappus of 

 the circumference unequal, scaly Virea. 189. 



Akenium wrinkled transversely Picris. 190. 



i. Pappus feathered, stipitate ; cUnanthus naked ; scales 

 of the pericline one-rowed, 



Akenium wrinkled transversely ; 



involucrum 5-bracteated Helminthia. 191. 



Akenium streaked lengthways ; 



involucrum Tragopogon. 1 92. 



g. Pappus feathered ; clinanthus chaffy ; pericliiie imbricate . 



Pappi all stipitate Achyrophorus. 186. 



Pappus of the centre stipitate ; of 

 the circumference sessile Hypoch^ris. 187. 



I. 176. LAPS AN A. Dioscorides. Nippleivort. 



Bractece 4 or 5, very short ; pericline- scales 8, in a 

 single row, upright, connivent; cUnantlius bald, flat, with 

 depressed papillae ; y2ot{/er5 many; akenium oblong, angular, 

 streaked, deciduous ; pappus 0. 



Lapsana communis. Common nipplewort. 



Stem upright, streaked, branched; leaves ovate, petioled, 

 angularly toothed ; peduncles thin, much branched ; peri- 

 cline when in fruit angular. 



Lampsana, Raii Syn. 173, \% Ger. em. 255. 

 Lampsana vulgaris, Park. 810. 

 Lapsana communis, Lin. S. P. 1141. 

 Dock cresses. 



Ruins and fields; annual; June and July. 



