2O6 PATAGONIAN EXPEDITIONS I BOTANY. 



* 



Old World, where it is only known on the tops of Campbell's Id., seems 

 to indicate its having been transmitted from east to west as against the 

 course of the prevailing winds in the antarctic regions." (J. D. Hooker.) 



T. SPICATUM PHLEOIDES (Kimth). 



A robust form' 



Punta Arenas, and nearly everywhere in Fuegia (Dusen). Also a 

 slender form at Ushuaia and Navarino I. 



"That of Horn Id. is velvety throughout, and represents T. phleoides 

 Kunth." (Franchet.) 



8. T. SUBARISTATUM DeSV. 



Erect, 22-30 cm. Leaves 4-7 cm. long, plane, pubescent-tomentose. 

 Ligule ovate, dentate-ciliate ; sheaths longer. Sterile culms low. Panicle 

 5 cm. long, cylindraceous, spike-like, shining, variegated. Spikelets 2-3- 

 flowered, with a pilose rudiment, 4-5 mm. long. Glumes unequal, the 

 lower lanceolate, i -nerved; the upper larger, obovate, 3-nerved; pedicels 

 pilose. Floral glume glabrous, long, 5-nerved, awned below the apex. 



S. Patagon., by Rio Sta. Cruz, rare. 



9. T. VARIABILE E. Desv. 



Culm erect, 30-60 cm. tall, with 2-3 glabrous nodes. Leaves plane, 

 linear, acuminate, scabrous-margined. Panicle spike-like, 7 cm. long, 

 shining. Spikelets 5-7 cm. long, shining, 3-4-flowered. Flowers 5-6 

 mm. long. Chimes unequal, the lower narrow, linear, the upper ovate, 

 acute, shorter than the spikelet. Floral glume 5 mm. long, rough, 2-mu- 

 cronulate, awned two thirds up ; awn as long. Palea scarcely as long. 



(Chili); Magellan; Fuegia (Brecknock Pen.). 



T. VARIABILE VIRESCENS 



Leaves pilose, broad and rough (7 mm. by 30 cm. long) ; ovary glab- 

 rous. Spikelets about 3-flowered, glaucous to green. 

 (Central and S. Chili) ; Magell., Fuegia. 



30. AVENA Linn. Oat. 



Spikelets few-flowered, rarely i -flowered, in a loose panicle; rachilla 

 articulate above the two empty glumes, hairy under the floral glumes. 

 Empty glumes subequal ; the floral smaller, rounded on back, with a 



