886 PATAGONIAN EXPEDITIONS: BOTANY. 



Allied to Tr. etiphrasiodes Bert, a species doubtfully pronounced peren- 

 nial by De Candolle, and enumerated among the perennial forms by 

 Philippi ; but, according to the specimens in the Berlin Herbarium, annual. 

 Its leaves, however, are petiolate, and more pinnately parted, and its lobes 

 may be 12, as against 2 in our plant. Tr. andinum Phil., very similar in 

 habit, is distinguished by the spinose bracts and leaf-segments. 



76. STRONGYLOMOPSIS Speg. 



Habit, head and flowers as Nassauvia, Sec. Strongyloma; but pappus 

 none. 



S. FUEGIANA Speg. 



Perennial, loosely cespitose, the branches suberect, short. Leaves 

 nearly isomorphous, elongate, linear-subulate, trigonous, acute. Pleads 

 sessile at ends of the branches, mostly solitary. Involucral scales usually 

 6-seriate, glabrous, the three outer small. Flowers 5, corollas bilabiate, 

 white ; achenes silky-pubescent. 



Golfo de S. Sebastian, E. Fuegia. Stems woody, tortuose. Habit of 

 N. (Strong.'] patagonica Speg. 



77. AMEGHINOA Speg. 



(Allied to Nassauvia.} Head discoid, equal-flowered ; flowers numer- 

 ous, hermaphrodite, fertile. Involucre campanulate ; its scales about i- 

 seriate, with a few outer and shorter additional. Receptacle naked, alveo- 

 late. Corolla bilabiate, the outer lip 3-toothed ; the inner narrowly 

 2-toothed. Anthers with a scarious, lanceolate, inferior appendage, atten- 

 uate-petiolate, as long as itself, basi-sagittate, and produced in bar- 

 bellate tails nearly as long. Style-branches short, terete, truncate. 

 Achenes subturbinate, costate, truncate above. Pappus-setts i -seriate, 

 denticulate. 



A small shrub, with subcoriaceous, dentate or lobed, spinulose leaves. 

 Heads partly corymbed at the tops of the branches, briefly peduncled or 

 sessile. Corollas ochroleucous. Achenes puberulo-hispid. 



Only one species, viz. : 



A. PATAGONICA Speg. 



Branching shrub, nearly i meter high. Leaves subsessile, broad-ovate, 

 pinnately lobed ; the lobes entire, spinulose-mucronate, more or less laxly 



