152 DiPSACE^. Pterocephalm , 



Hab. in regione alpina Per.^i» austro-ocf^idental's, montes Sabst Buschom et 

 Kuh Daena (\\\. il4l et 706!), montes Xur, Eschker et Sawers 00Oir-13OC0' 

 (Haussk!). FLJul. 



Folia 1-2-pollicaria 3-4 lin. lata, rami bipoUicares. pedunculi (;-9-pollicares, 

 capitula eis P. cani vix minora. 



44. Pt. Arabicus (Boiss. Diaiin. Ser. I, 40, p. 78) surfrulicosiis 

 dense dumulosus crispule et adpressissimc canescens, rumis novellis 

 rigidis pumilis l-S-ceplialis. foliis lanceolato-liiiParil»us in petiolum 

 altenuatis integris denlalis et sa^pius ad mcdfum usque in lacinias 

 triangularcs brevcs pinnatifidis, pedunculis rigidis. invoiucri unise- 

 riati phyllis ohlongo-lanccolatis coroilas luteas aequales aequantibus 

 vel superanlibus. involucclli (junioris) adj)ressc birti corona integrS 

 brcvissima liirsuta, calycis aristis 16 fusccscentibus 5. 



Hab. in lapidosis septfntrionalil)us jugi Tih Arabire Petrcre infra el Rakineh 

 alt. circ. 4000' (Bois>!) Fl. Mai. 



_Rami cum pedunculis 2-4-iiollicares, folia 10-15 lin. longa 3-3 lata, capitula 

 eis P. c«/iMllmidio initiora, corolla' breves. 



45. Pt. pulverulentus (Boiss. ct Bl.j hasi suffrutescens totus 

 adprcssc et crispuh' tonicntcllus albicans, caulibus rigidis superne 

 dichofome ramosis o-5-cc[)lialis, foliis ambitu lanceolatis in lacinias 

 brevcs ovato-(d»iongas ct oblongo-lineares subdcntatas vel integras 

 plnnalipartitis, involncri phyllis oblongo-lanccolatis flosculis ajqualibus 

 subbroviuribus. Involuccllo aiiicc iKjn attcnuato truncalo corona bre- 

 vissima crispula, calycis subscssilis aristis sub 16 5. 



Hal). in deserto Syrlaco inter Snou Fndel et Gebel Al>iad et ad ruinas Pal- 

 myriP (Bl!), in rupibus montis Sindjt>r Mesopotamini (Haussk! spec nondum 

 fi-uclitera). 



(-ium pedunculis clongatis V3-I pedalis, folia cum petiolo bipoUicaria 4-5 

 linea^ lala.caiiitula raediocria, flores e sicco lutei videntur. Affmis Pt. Arabico, 

 rami lungioro, folia magis dis.-,ecta, involucelli corona margine glabriusculo 

 cri^pula nec integra. 



ORD. LXI. COMPOSIT^. 



(Vaill. Act. Ac.\d. Par. 1718.) 



Floresr^o.sT////! hermaphrodill vel abortu unise^uales.plurcs (rarius 

 singuli) in rcccptarulo coininuni.nudo setoso vel paleaceo scssiles, 

 involiiero p/uj//l.s pluribus conslanti inclusi. rapi/ulinn formantes. 

 Calycis lubus ovario adnatus, liinbus vel nullus vcl c/en/atus, roro- 

 nafoniiiH vcl papposiia. Gorolla calycis tubo imposita gamopctala 

 tubo brevl vcl clongato. lindio rcgulari vei irrcgulari in lacinias 4-5 

 rarius :>-o aut in ligulam extus palcntem fisso. Stamina 4-5 corollffi 

 lobis altcrna cjus lulio iuserta, tilanicnta libcra, anthera^ in tubum 



