1S4 THE PLANT WORLD. 



Seop. of North America, occurs in La Plata, but is not reported 

 farther south. The Arctotirese are unkuowu in America, being 

 nearly coAfined to South Africa, with outlying species in Abys- 

 sinia, the Mediterranean region and Australia. They are like 

 Cynaroidese, but have radiate lieads, and tailless anthers, and 

 their stvles are scarcely branched. 



The tribe Mutisiese and its subtribes are in some respects 

 the strangest of the Composita?, and they have their chief seat in 

 Peraustral America, and in Brazil, just as the Cynaroidese most 

 closely related to them, reign at the remotest part of the earth 

 from them. Mutisiese have some representatives in North Amer- 

 ica and in the Old World. With much diversity of structure 

 their chief characters are prevailing bilabiate flowers (both lips 

 often revolute), tailed anthers, unappendaged styles, mostly 

 setaceous pappus, naked receptacles, many-seriate involucre and 

 frequently fruiticose habit. 



Mutisia itself , with 60 species in tropical and subtropical 

 America, often climbs, being aided l)v its winged stems, and its 

 pinnate, tendril-bearing leaves. It loves the preandine shrub- 

 beries. Triclioline, of smaller habit, with 1-headed scape, and 

 rosulate leaves, like a yellow daisy, has 27 species in extra-trop- 

 ical America, and a single species in Australia. Plazia is a 

 shrub resembling the Euphorbias Plazia argentea O. Ktze., is all 

 silvery, and its stem supplies the Indians of the pampas in Ar- 

 gentina and North Patagonia with a masticatory, like chewing- 

 gum elsewhere. Lasiorrhiza (Leuceria) comprises herbs with 

 sno^vy pinnatifid leaves ; some of its species along the Beagle 

 Channel taking the place of the Swiss Edelweiss, but having 

 their purplish heads on tall scapes. 



Hoffmann's genus Dusenia, recently erected in honor of our 

 distinguished friend, is remarkable for its 10-pale pappus and 

 its graceful habit, with pairs of narrow fleshy leaves. Chuqui- 

 raga is a contrast to these, bristling with spiny leaves which re- 

 semble bundles of polished steel needles, C. erinacea D. Don, be- 

 ing called "Herba del perdice'' (Rhea-food), attesting that the 

 famous South American Ostrich must have a good stomach. 



