COMPOSITE (composite FAMILY.) 



Akenes compressed or angular-cylindrical - Hyoseris 

 Akenes teretish ; pappus of outer cup-like, of 



inner awned pales Hedypnois 

 Pappus bristly-hairy, not plumose or 0. 



Akenes bald, awl-shaped - - - - Rhagadiolus 

 Akenes all or marginal ones with a short crown. 



Akenes 4-angled Tolpis 



Akenes compressed, about 20-striate - Lapsana 

 Akenes hook-shaped . . . _ Garhadiolus 



Akenes with barbed prickles, the terminal recurved. Kselpinia 

 Akenes all with pappus. 

 Akenes with a hollow stalk, not beaked - Scorzonera 

 Akenes not stalked. 



Akenes 4-angled, not beaked - - Tolpis 

 Akenes of margin 4-5-augled, not beaked ; 



pappus united at base Picridium 

 Akenes cylindrical or prismatic, not beaked. 

 Pappus white, soft (in 97 outer akenes bald). 



411 

 83 



84 



88 



85 

 86 

 89 



113 



85 

 107 



Akenes 10-80-striate, similar 

 Akenes not striate, the inner white 

 Akenes striate, the inner with a hol- 

 low base 

 Pappus rusty or reddish - - - 

 Akenes more or less flattened, not beaked 

 Akenes of the margin only beaked 

 Akenes of the disk at kast beaked 

 Akenes all beaked. 



10-30 striate ; pappus white, soft 



compressed ; pappus on a disk at tip of beak Lactuca 



Crepis 95 



Zollikoferia 109 



Cymboseris 97 



Hieracium 98 



Sonchus 108 



Zacyntha 90 



Crepis 95 



Crepis 95 



105 

 terete ; pappus on disk at tip of beak. Cephalorrhynchus 106 

 4-angled ; beak pyramidal at base - Taraxacum 103 

 5-angied, tipped with crown-like scales 



and beak Chondrilla 104 

 Pappus plumose. 



Hairs of plumes not interlaced. 



Akenes muricate-wrinkled, outer beakless, 



inner beaked Thrincia 102 



Akenes muricate-lamellate, jointed with beak Urospermum 112 

 Akenes transversely wrinkled. 

 Pappus in 1-2 rows, united in a ring or 



cup below Picris 92 



Pappus of disk akenes of 5 pales, of 



margin cup-like Hagioseris 93 



Pappus in 1 row of bristles at tip of 



slender beak Helminthia 94 

 Akenes finely striate. Pappus in 1-several 



rows, dilated at base Leontodon 101 

 Hairs of plumes interlaced. 



Pappus of marginal akenes chaffy, scabrous Geropogon 111 

 Pappus of all the akenes bristly, plumose. 

 Involucre in 1 row of 5-16, nearly equal 



scales Tragopogon 110 

 Involucre in several rows of unequal 



scales (except S. lanata) Scorzonera 113 



