402 PATAGONIAN EXPEDITIONS I BOTANY. 



Petals none. Stamens numerous. Achenes i -seeded. Styles long, often 

 plumose. 



Species 100, chiefly in temperate climates. 







C. VIRGINIANA Linn, (including C. dioica Linn.). 



Flowers paniculate, dioecious. Leaves ternately divided, their segments 

 subglabrous, ovate, subcordate, acuminate, 3-nerved, entire. Pericarps 

 oval. Pedicels pubescent. 



(Jamaica, medicinal.) 



C. VIRGINIANA CAMPESTRIS (S. Hil.) 



Cauline leaves flammuliform or bifoliate, or the upper simple : leaflets 

 narrower-ovate to lanceolate, or narrower, mostly entire. 



(S. Brazil to N. Patagon.) Common in shrubberies by Rio Negro, 

 near Carmen, the form angustissima in Patagonia. 



4. MYOSURUS Linn. Mousetail. 



Diminutive, with fibrous root; basal, linear, entire leaves; and i- 

 flowered scapes. Sepals 5 (-6-y)-spurred at the base. Petals as many or 

 none, greenish-yellow, narrow, with a nectary above the claw. Stamens 

 5-25. Achenes numerous, their receptacle elongate in fruit. 



Species 5, Eurasia, western Amer. ; Australia. 



i. M. ARISTATUS Benth. (M. apetala Gay.) 



With or without petals. Fruit-head at length long. Achenes carinate, 

 beaked with a diverging, persistent style, nearly as long. 



(W. United States to Chili and N. Zeal.) S. Patagon., pampas near Coy 

 Inlet. By mouth of Rio Chubut (Dusen) ; by Rio Gallegos (Nordenskj.). 

 In N. and E. Fuegia. "Is often petaliferous and occurs in N. Amer." 

 A. Gray. 



M. ARISTATUS BRACHYPUS (SpCg.). 



Leaves as long as the scape, or longer, numerous (10-20), broader and 

 more acute than in M. gracilis. Sepals often 5 ; petals none. Stamens 

 5, all fertile. 



Patagonia, in meadows by Golfo de San Jorge. Leaves 20 mm. long 

 by 0.5 to 1.5 mm. broad. 



