228 PATAGONIAN EXPEDITIONS I BOTANY. 



A very handsome species retained in Festuca by J. D. Hooker on ac- 

 count of its acuminate scales ; but with " fertile glumes acutely carinate, 

 silky-pubescent on the keel and at the prominent marginal nerves ; just 

 as in Poa." (Dusen.) 



Magell. ; Fuegia to Cape Horn; Sta. Cruz Valley. (J. B. Hatcher.) 



1 6. P. IBARI Phil. 



Cespitose, glabrous, bulbously thickened at base, covered by white 

 sheaths of dead leaves. Fertile culm 15 cm. high ; leaves coriaceous, 

 convolute-setaceous, much shorter than the culm ; the ligules very long. 

 Panicle contracted, few-spiculate, 4 cm. long. Spikelets 9 mm. long, 2-3- 

 flowered. Floral glume of male flowers 7.5 mm. long, 3-nerved at base, 

 usually cuspidate awned, with scabrid keel, basally woolly as on lateral 

 nerves. Joints of rachis penicillate at base. 



By Lago Pinto, S. Patagon. 



17. P. LANIGERA NeCS. 



Culm simple, scarcely 30 cm. high, with compressed, carinate, glabrous 

 sheaths. Ligule short, rounded or truncate, leaves distichous, linear, rigid, 

 plane. Panicle branching, contracted, lobed. Spikelets 2-5-flowered, all 

 the staminal effete. Flowers very long-woolly at base. Lower floral 

 glume 5-nerved, densely silky-ciliate on back and margin. 



(Brazil; Chili); Patagon. (?). 



1 8. P. LANUGINOSA Poir. 



(Dioicopoa see P. chilensis.'] 



Creeping; culm simple, 30 cm. tall, with 2 nodes, subcompressed. 

 Leaves narrow-linear, becoming involute, a yellow spot at each side near 

 the glabrous sheath ; the ligules oblong, lacerate. Panicle contracted, its 

 short, solitary rays fasciculately divided. Spikelets ovate, 5-io-flowered, 

 imbricate on the raylets ; floral glume silky-keeled, with a tuft of long 

 hairs on the axis under each flower. 



S. Patagon. by R. Sta. Cruz; E. Fuegia. (Dusen.) "Identification 

 uncertain; perhaps avar." (E. Hackel.) Chubut, "not rare in dry places 

 by Cabo Raso," var. elata Speg. 



