2C>8 PATAGONIAN EXPEDITIONS : BOTANY. 



the cauline leaves long, pilose-mouthed ; upper ligules long ; uppermost 

 leaves short. Panicle contracted ; spikelets 10-15. Glumes subequal, 

 lanceolate-subulate, exceeding the flowers, yellow or slightly violaceous. 

 Floriglume 10 mm., parted half-way, with long white hairs. Awn 12 mm. 



Patagonia, elevated places near Bolson and Carren-leofu. 



The Patagonian forms have the leaves and sheaths becoming glabrate 

 with age, when young laxly and softly villous. 



2. D. PICTA Nees & Mey. 



Cespitose ; 'cidms erect, 6-30 cm. high, geniculate at the oblong, fulvous 

 nodes. Leaves coriaceous, convolute, with pilose sheaths and short ligules. 

 Panicle few-flowered, strict, to 4 cm. long, pointed: spikelets 9-10 mm., 

 3-4-flowered. Empty glumes lance-linear, 3-nerved, white with purple 

 tips. Floral glume oval-elliptical, with setae and awn in a triple cincture 

 of hairs. 



(Chili) ; S. Patagon., by R. Sta. Cruz, and Lago Argentine. 



"Specimens from Sta. Cruz have yellowish-green glumes: from Lago 

 Argentine are painted purple or violet." (Speg.) 



3. D. PICTA PATAGONICA Speg. 



Smaller than the species ; leaves convolute-subulate, subpungent. Spike- 

 lets 3-flowered, glumes green, scarcely violascent ; awns scarcely as long 

 as their glumes. 



S. Patagon., dry rocky places between S. Julian and Rio Deseado. 



32. SPARTINA Schreb. Marsh-grass. 



Glabrous with long rhizomes, flat, involute leaves, and alternate i -sided 

 spikes. Spikelets i -flowered, in two rows, articulated below the glumes. 

 The 2 empty glumes unequal, keeled ; palea mostly longer than the floral 

 glume. 



Species 7, in saline soil or marshes. 



i. S. CILIATA Kunth. 



Leaves convolute-filiform. Spikes numerous, closely appressed. Keels 

 of the glumes ciliate ; keel of floral glume spinulose. 



A tall wiry grass used for thatching about Bahia Blanca. 

 N. Patagon. (J. Ball). 



