172 S. Kurz — Contributions towards a [No. 2, 



DicoMA. Flower-heads usually almost sessile. Style-branches linear, long or 

 shortened. Achenes densely villous. Scales or bristles of the pappus feathery, copious. 

 Herbs. 



X X Flower-heads few-flowered. 

 Leucomeris. Receptacle naked. Style-branches very short, conniving or almost 

 spreading. Achenes oblong, silky- villous. Bristles of pappus smooth. Flower-heads 

 corymbose. Shrubs or small trees. 



AiNSLUEA. Style-branches very short. Bristles of pappus feathery. Flower- 

 heads 2 — 5 -flowered, sessile or peduncled, racemose or panicled. Herbs. 



* * Flower-heads usually radiate, the corollas ligulate-2-lipped, rarely ligulate 



(Gerbereae). 

 Gerbeba. Involucre turbinate or bell-shaped, the bracts unequal, imbricate. Ray- 

 florets in 1 or 2 rows, 2-lipped, the ligules 3 — 4-nerved. Achenes usually beaked. 

 Pappus reddish. Herbs, the leaves radical. 



Suhord. II. CICROBIAGEM, Juss. Flower-heads homogamous, 

 all the florets ligulate and hermaphrodite. Style not thickened at the apex, 

 the branches filiform, revolute, and puberulous. Herbs, tall or small, never 

 woody, with fistulose stems, the sap always milky. 



* Pappus paleaceous, awned, coronate or none. 



Subtrib. 1 KYOSERIBEM. Involucre various. Achenes truncate at the top. 

 Pappus consisting more or less of small scales or scalelets alternating with bristles, or 

 none. 



CiCHORiuM. Inner involucre-bracts in 1 — 2 rows, almost equal, erect, the outer 

 ones short, lax or wanting. Pappus none or very minute. Florets lai-ge, blue. Rigid 

 branched herbs. 



* * Bristles of pappus (at least those of tlie central achenes') 



capillary, smooth or feathery. 

 Subtrib. 2. CREPIBEJE. Involucre calyx-like or rarely imbricate. Achenes 

 contracted at the base, rarely columnar. Herbs. 



* Hairs of indument simple. Innermost bracts of the involucre usually thicJceU' 



ing at the base. (Crepidese). 



Crepis. Involucre of a single row of nearly equal bracts, with a few small outer 

 ones. Achenes not at all or scarcely flattened, very shortly contracted at the top. 

 Pappus sessile, of numerous simple capillary bristles or hairs. Herbs with leafy stems. 



PiCRis. Outer involucre-bracts small, numerous. Achenes very shortly contrac- 

 ted at the top. Pappus (at least of the central achenes) consisting of feathery bristles. 

 Hispid herbs, with leafy stems. 



* * Hairs of indumentum {if present) stellate often accompanied by simple ones, 



or the indument intricately woolly. Innermost bracts of the involucre 



^ not thickening. (Hieracieae.) 



Hieracium. Receptacle naked or very shortly fibrillose. Bristles of the pappus 

 rather stifi", fr-agile, persistent, simple. Herbs. 



Subtrib. 3. LACTUCACEJE. Involucre calyx-like or rarely imbricate. Achenes 

 contracted at both ends, or beaked. Bristles of pappus simple. Herbs ; the hairs if 

 present simple. 



* Achenes shortly or long-beaJccd. 



Lactuca. Achenes more or less compressed, ribbed. Bristles of pappus persistent 

 or deciduous. Florets yellow or blue. 



