780 PATAGONIAN EXPEDITIONS I BOTANY. 



I. GUTIERREZIA AMEGHINOI Speg. 



Suffruticose, low (5-10 cm.), the branches short, ascending, densely 

 leafy. Leaves linear-obtuse, oblanceolate, briefly cuneate-acute at apex, 

 basally attenuate, glabrous, densely glandular-punctate. Heads solitary, 

 terminal on leafless branches, corymbed. Ligules 4-8 ; tubular flowers 6-8. 



S. Patagon., by Rio Deseado; Magellan; Chubut, Cabo Raso. These 

 have caudex woody, branches always herbaceous. (Speg.) 



2. G. BACCHAROIDES Sch. Bip. 



Low, cespitose, glabrous, viscous shrub. Leaves crowded at the apex 

 of the stems, obovate-oblong, entire or ciliate, attenuate-petiolate. Heads 

 solitary, sessile amid the uppermost leaves. Invohicre scales ovate- 

 oblong. Ray-flowers 5; disk-flowers 19. Pappus-pales 10. Achenes 

 hoary, hirtellate. 



S. Patagon., by Rio Deseado; Magellan, by Oazy Harbor; Fuegia, 

 at Punta Anegada. 



3. G. BRACHYRIS (Brachyris panictilata DC., non Gutierezia 



paniculata Gray). 



Stem suffruticose, paniculately branching, rather terete. Leaves linear, 

 acute, punctate, plane, thickish. Heads oblong, paniculate. Ray-flowers 

 5, slightly exceeding the involucre ; disk-flowers 5-6. 



S. Brazil. 



G. BRACHYRIS PATAGONICA (Speg.). 



Somewhat glandular-viscous. Leaves oblanceolate, subpectinately cilio- 

 late, long-attenuate and forming a periclad ; upper leaves narrower and 

 smaller. Flowers yellow, 15-22 in the head. 



Patagon., Chubut, in sterile hills. 



(Subgenus Brachyris, by Nuttall as a genus. Hermaphrodite flowers 

 all usually fertile ; pappus of females and hermaphrodites similar, or of 

 the female shorter.) 



4. G. CUPRESSIFORMIS Sch. Bip. 



Like Baccharis, but most beautiful, from its small, imbricating, spirally 

 arranged, 4-ranked leaves. Heads 8-flowered ; outer flowers ligulate, 

 female, having asteroid styles with glabrous branches. Inner flowers 



