50 PATAGONIAN EXPEDITIONS I BOTANY. 



PHRAGMITIS PILOSA (d'Urv. sub Arundo}. 



Leaves striate, convolute, subdistichous, often exceeding the culms, 

 scales are i ft. Panicle subovate, contracted. Calyx smooth, its scales 

 acute, as long as the 5-y-flowered spikelets. Valves smooth, with copious 

 long, white villi ; outer valves keeled, tipped by a very long awn ; inner 

 valves shorter, subapically trifid. 

 Falkland Islands. D. 



CHLORIS Sw. 



C. PETR^A Thunb. Macl., p. 209. 



Not noticed from Patagonia ; is, therefore, to be deleted. 



Macl., p. 213 : GYNERIUM. Insert the following note : The old genus 

 Gynerium is now divided into the two genera, distinguished as follows : 

 Gynerium Humb. & Bonpl. 

 Cortaderia Stapfer. 



Both are dioecious. 



Gynerium has 2-merous flowers, 2 flowers in the spikelet, each with 

 two stamens (staminodes in the female plants). The glumes (sagittate) 

 long-pointed ; the pales ovate, one twice as long as the other. The only 

 species of this genus is G. saccharoides H. & B. A tall cane-grass (4-8 m.), 

 S. Mex. to S. Brazil, and cult, for bouquets. 



Leaves linear, carinate, margins cartilaginous, serrulate. Panicle sub- 

 secund, contracted, apically nutant. Rays slender, spikelets 3-flowered ; 

 flowers caudate-acuminate. Culm 30-90 cm., panicle 8-10 cm. long. 



N. Patagon. Territory of Neuquen ; Chili. 



Cortaderia\3q>{. is 3-merous, the spikelet having 3 or 6 flowers, the upper 

 flower shorter ; and the pales narrow, acuminate ; stamens 3 (staminodes 

 in the females). Cespitose cane-grasses, the leaves very fine and long, 

 crowded around the bases of the culms. This has 5 species, all in extra- 

 tropical South America, the most important being C. Selloana (Schult.) 

 Aschers. et Graeb., Stapf., or pampas grass. D. 



CORTADERIA QUILA Nees et Mey. of Stapf, in Gardener's Chronicle, 



1897. P- 396. 



Syn. Gynerium quila Nees & Mey. 

 Add the synonymy. 



Syn. Arundo dioica Spr. Syst. Veg., I, p. 39 (1825) haud Lour. 

 Arundo Selloana Schult. Mant, III, p. 605 (1827). 



