86 PATAGONIAN EXPEDITIONS ! BOTANY. 



c. Female flowers sessile, concealed in a leafsheath. Sepals long, linear, convolute. 



Style very long. Polosia. 



cz. Female flowers stiped, more or less exsert. Sepals short, ovate, obtuse. Style 



shorter. .Oxychloe. 



A2. Flowers monoclinous. 



b. Flower i, terminal, large ; plants perennial. Antarctic lands. 



c. Bracts small; flowers 1.5-2 cm. long; seeds scobiform. Laminae cauliform. 



Marsippospermum, p. 295. 



C2. Lower bract frondose, exceeding the flower ; upper dry, equalling the flower, which 

 is I cm. long. Seeds obovate. Laminas canaliculate. 



Rostkovia, p. 296. 

 bz. Flowers not large, many in an inflorescence (rarely only I flower). 



c. Shrub, 1-3 m. high. Sepals coriaceous. Prionium. S. Africa. 



cz. Herbs. Sepals glumaceous, rarely colored. Cosmopolitan. 



d. Leaf-sheaths closed. Margins of leaves ciliate. Flowers bracted ; fruit cap- 

 sular, i -celled, 3 -seeded. Perennial, except one. 



Luzula {Juncoides), p. 301. 



d,2. Sheaths open (except one species), overlapping at edges. Leaves glabrous. 

 Flowers bracted or not. Fruit capsular, many-seeded. Some annuals. 



Juncus, Rush, p. 296. 

 Note. Juncodes, or Juncoides, has priority over Luzula as the generic name. 



MARSIPPOSPERMUM Desv. 

 Add Macl., p. 296, after line 8 : 



M. GRANDIFLORUM VEF. PHILIPPII Buch. 



More slender; flowers smaller, 2 cm. long, generally i -bract; sepals 

 linear subulate. 



Andine-Patagonian province of S. Chili. 



W. Patagonia, also on the eastern slope of the Cordillera, for instance 

 in the upper valley of Rio Aysen and to the north of Lago San Martin 

 by Rio F6siles, c. 900 m.; also by the upper Rio Manso. 



Add Macl., p. 296: 



M. REICHEI Buchen. 



Rather small. Stems erect, tenacious, bract 6 cm. long. Leaves 

 frondose, mostly 3 in a shoot, exceeding the stem (5-9 cm.), subterete; 

 at length dividing into 3-6 filaments. Flowers 1.5 cm. long. Anthers 

 linear, apically pointed; fruit 9 mm. long, seeds 1.7-18 mm. 



SW. Patagonia, in the Baguales district, in swamps, c. 1,000 m.; to the 

 north of Lago San Martin by Rio F6siles in swamps, c. 1,000 m., here 

 abundant. 



