234 FLOWERING PLANTS OF THE RIVIERA 



Leaves all setaceous, filiform, and glaucous. Upper sheaths not enlarged. Plant 

 same height as last. 



Dry hill-sides and stony slopes. May-June. 



S. tortilis Desf. A rather smaller annual species. Panicle more spike-like. 

 Awn about 4$ in. long, lower part much twisted, armed with strong hairs. Inner 

 glume villous. Sheaths broad, the upper generally embracing the base of panicle. 



Dry rocky places, rare. April-May. La Garde, near Toulon, Villefranche, 

 and Nice. 



S. Aristella L. Plant 2-4 ft. high, glabrous. Leaves rolled in, setaceous, 

 the upper one far from the panicle. Awn hispid, not twisted, twice as long as 

 the acuminate glume. Florets sessile. Anthers hairless. 



Dry rocky or stony places. May- June. 



S. tenacissima Desf. This handsome grass, well known in Egypt, is found 

 naturalized near the top of Mont Faron near Toulon (Reynier), and in May, 1913, 

 a few large clumps 4^ ft. high were found by the writer on a limestone slope 

 just above La Farlede (Var). It is known as Haifa Grass. 



PIPTATHERUM P. Beauv. 



Glumes membranous. Spikelets i-flowered, in a loose panicle. Florets 

 sessile. Fertile glume joined to a straight, terminal awn, hardening on 

 the seed. 



P. multiflorum P.B. Panicle many flowered, the branches being in 

 whorls. Awn as long as glume. Fertile glume smooth. Leaves flat ; ligule 

 short, truncate, the upper one sometimes laciniate. Plant 2-3 ft. high, with erect, 

 stiff stems. 



Road-sides and fields, very common in most places on the littoral. May- 

 October. 



P. citrulescens P.B. Awn shorter than glume. Leaves narrower, 

 setaceous, involute. All ligules long, lanceolate. Spikelets bluish. 

 Stony places in limestone hills. April-June. 



P. paradoxum P.B. Panicle few flowered. Awn twice as long as glume. 

 Fertile glume hairy. Leaves flat. Ligules short and truncate. 

 Limestone rocks and dry hill-sides. Rare. May-July. Faron. 



AIRA L. 



Panicle lax. Flowers 2. Fertile glume toothed or bifid at top, terete on the 

 back. Awn dorsal, kneed (except in A. ccespitosa). Ovary glabrous. Fruit 

 not crested. The following species occur : A. Tenorii Guss., A. provincialis 

 yard., A. caplllaris Host., A. ccespitosa L., A. flexuosa L., A. media 

 Gouan, A. Cupaniana Guss., A. caryophyllea L., A. multiculmis Dumort. 



CORYNEPHORUS P. Beauv. 



Spikelets panicled, 2-flowered. Awn straight, jointed in middle; upper 

 portion clavate, a tuft of hairs at the junction. Tip of lower pale entire. The 

 following occur: C. canescens P.B., only at les Sablettes near Toulon, C. 

 fasciculatus Boiss. et Reut., and C. articulatus P.B., both on sandy places 

 near the sea. 



VENTENATA Kaler. 



Ventenata avenacea Kceler. Grows in sandy waste ground near Collo- 

 brieres and perhaps elsewhere in the Var. It is a glabrous annual, 1-2 ft. high, 

 with the habit of an Avena, and very loose spreading panicle. 



AVENA L. OAT. 



Spikelets 2-5 flowered. Fertile glume entire or 2-toothed, long awned. 

 Awn dorsal, kneed, and twisted. Ovary hairy at the top. Fruit crested and 

 furrowed. The following may be found: A. barbata Brot., A. fatua L., 



