MACLOSKIE COMPOSnVE. 779 



4. GRINDELIA DISCOIDEA Hook. & Arn. 



Glutinous undershrub; with oblong-linear, mucronate, spinulose, den- 

 tate leaves. Involucre hemispherical, squarrose, its external scales linear 

 from an appressed base, recurved. Ray none. 



(Montevideo), Patagon. (?). " Perhaps a var. of G. diffusa (in Puerto 

 Deseado) which has a ray twice the involucre in height." 



5. G. PULCHELLA Dunal. 



Erect, glabrous undershrub, glutinous upwards, with terete branches, 

 and leaves cauline, sessile, oblong, acute, here and there sharply toothed. 

 Heads 2-3, proximally bracted. Involucre glutinous, its scales lanceolate, 

 acute, appressed. Pappus 3-awned. 



(Chili) ; N. Patagon. 



6. G. SPECIOSA Lindl. & Paxt. 



Short shrub, 11.5 meter high, densely branching, sometimes viscid. 

 Leaves varying in size, incised or toothed, obtuse or acute, attenuate- 

 petiolate or cuneate, subsessile. Flowering pedicels long and leafy or 

 otherwise. 



Patagon., by Rio Negro, and Rio Chico de Sta. Cruz. 



G. SPECIOSA INTEGRIFOLIA Speg. 



Leaves oblanceolate, acute, attenuate-petiolate, entire. 

 Patagon., Golfo de San Jorge. 



6. GUTIERREZIA Lag. (Brachyris DC.) 



Erect herbs or shrubs, branching upwards, or short and cespitose, with 

 radiate, heterogamous, rather small, yellow heads, solitary on ends of 

 branches, or panicled, or corymbed. Ray-flowers few, female; disk- 

 flowers hermaphrodite, fertile or sterile. Involucre narrow-campanulate, 

 its scales few-seriate, imbricate, coriaceous, smaller outwards. Anthers 

 basi-obtuse. Styles flat, narrow, appendaged. Pappus, of many pales, 

 varying, often cleft, or a mere crown. Achenes scarcely compressed, 

 many-costate, puberulous or silky. 



Species 20, from Western U. S. to Mexico, and extratrop. S. Amer. 



