444 Cichorieae 



68. CICHOBIUM L. 



Erect branching herbs, with alternate and basal 

 leaves, and large heads of usually blue flowers ped- 

 uncled or in sessile clusters along the branches. Invo- 

 lucral bracts in 2 series, herbaceous, the outer somewhat 

 spreading, the inner erect and subtending or partly 

 enclosing the outer achenes. Receptacle flat, naked or 

 slightly fimbrillate. Rays truncate and 5-toothed at the 

 apex. Anthers sagittate at the base. Style-branches 

 slender, obtusish. Achenes 5-angled or 5-ribbed, trun- 

 cate, beakless. Pappus of 2-3 series of short blunt 

 scales. 



1. C. Intybus L. (CHICORY.) Perennial from a long deep tap- 

 root; stems slightly hispid, stiff, branched, 3-9 dm. high; basal 

 leaves spreading on the ground, runcinate-pinnatifid, spatulate 

 in outline, 8-16 cm. long, narrowed into long petioles; upper 

 leaves much smaller, lanceolate or oblong, lobed or entire, clasp- 

 ing or auricled at the base; heads numerous, 25-40 mm. broad, 

 1-4 together in sessile clusters on the nearly naked or bracted 

 branches ; flowers bright blue, rarely white. 



Occasional in waste places. Hyde Park; Shermans. 



69. MICBOSEBIS Don. 



Acaulescent glabrous or slightly puberulent annuals, 

 with basal tufted leaves pinnatifid with mostly linear 

 and often falcate lobes or entire. Heads solitary in 

 long leafless scape-like peduncles, these nodding in bud, 

 becoming erect in fruit. Involucre narrowly oblong to 

 ovoid or subglobose. Ligules short, yellow. Achenes 

 slender-fusiform or cylindric, ribbed, mostly truncate. 

 Pappus paleae 5, mostly short, abruptly or gradually 

 passing into the scabrous awn. 



1. M. aphantocarpha tenella Gray. Scapes usually decum- 

 bent at base, 15-35 cm. high ; leaves entire or pinnatifid ; invo- 

 lucre calyculate; achenes slender, 3-4 mm. long, oblong-clavate ; 



