480 COMPOSITE, (composite family.) 



Receptacle naked. Marginal akenes incurved, with a cup-like crown, 

 those of disk nearly straight, with one row of 5 pales, dilated at base, 

 feathery above, not united in a ring but close together, rather per- 

 sistent — Annual herbs with yellow flowers, allied to Picris, but 

 differing in the deciduous scales of the involucre, and the chaffy pap- 

 pus in 1 row. 



H. Oalilaea, Boiss. .5 to .8, roughish, erect, loosely corymb- 

 ose. Leaves oblong, repand-toothed, those of stem clasping, with 

 broad, obtuse appendages. Heads .015 long — April and May — Hill 

 country of Palestine, east and west of Jordan. 



Var. difru§a, Boiss. More strigose ; stems thicker, shorter, 

 decumbent ; stem-leaves narrower, marginal akenes often appressed- 

 puberulent, those of disk more tapering — May — Coast of Syria and 

 Palestine ; Hebron. 



94. HELMIMTHIA, Juss. Helminthia. 



Heads many-flowered. Involucre double, the outer of 3-5, broad, 

 leaf -like scales, the inner of about two rows of narrow scales. Receptacle 

 naked. Akenes terete-compressed, wrinkled, terminating abruptly 

 in a brittle, capillary beak, which separates with the 1-rowed, feathery 

 pappus — Strigose annuals, with yellow flowers. 



P. echioicles, L. © .3to .5 ; stem thick, forked. Leaves 

 oblong-lanceolate, entire or sinuate-toothed. Heads terminal, .015 

 long, short peduncled, 2-5 in a cluster — May and June — Waste 

 places ; common. 



95. CREPIS, L. Crepis. 



Heads many-flowered. Involucre calyculate or somewhat imbricat- 

 ed. Receptacle naked, villous or glabrous. Akenes usually similar, 

 terete-columnar or somewhat prismatic, sometimes rather compressed, 

 10-30-striate, tapering or beaked ; rarely the marginal akenes of a 

 different form from the rest. Pappus white, usually soft and flexible 

 — Monacarpic or perennial herbs, with yellow flowers. 



* Akenes nearly simila?', tip more or less tapering, not healced. 



t Perennials. 



\ Branches of root-stock tuber-'hearing. 



1. C. l>iil1>osa, L. 2^ .2 to .3. Leaves glabrous, fleshy, ob- 

 long-oblanceolate, obtuse, somewhat dentate. Scape with 1 leaf and 

 1 head — January to April — Sandy and rocky places along coast. 



Var. polycepliala, Boiss. Stems .3 to .5, 2-4-headed — Coast; 

 Hill country of Judea. 



X \ Root fusiform^ mrtical. Scapes 1-headed. 



2. C. robertioides, Boiss. 2^ .05 to .1 ; root-stock scaly. 

 Leaves all radical, linear in outline, pinnatipartite. Scapes numerous, 

 slender ; heads .01 long — July to September — Alpine Lebanon and 

 Antilebanon. 



I XX Root prcBmorse. Stem dichotomous. 



3. C. Sietoeri, Boiss. 71 .3 to .6 ; neck between petioles red- 

 woolly. Leayes glabrescent at upper surface, more or less setulose at 



