208 FLOWERING PLANTS OF THE RIVIERA 



f ** Leaves chiefly radical, flat or grooved. Cymes terminal, 3 -many -flowered. 



Testa not produced at either end. 



J. compressus Jacq. Round-fruited Rush. Stems tufted, slender, 1-2 

 leaved. Leaves linear, flaccid, as long as the stem or shorter. Perianth seg- 

 ments oblong obtuse, shorter than the broad obovoid shortly mucronate 

 capsule. Cymes irregularly corymbose, bracts small. Perianth segments pale, 

 with broad scarious brown margin. 



Damp, grassy places, uncommon ; extending into the mountains. June- 

 August. 



J. tnultif lorus Desf. = J. subulatus Forsk. Rhizomes creeping. Stems 

 2-3 ft. high, leafy, robust. Leaves 1-4 on the stem, erect, subcylindrical, hollow, 

 soft. Perianth segments lanceolate-acuminate, greenish. Stamens 6. Capsule 

 small, ovoid-trigonous, obtuse, mucronate, brown, rather shorter than the 

 perianth. Cyme long, narrow, interrupted, with erect branches and short bracts. 



Damp places and marshes on the littoral. May-July. This seems to be a 

 typical Mediterranean species ; found at Castigneaux, near La Seyne, La Garde, 

 and the Plage d'Hyeres. 



J. Gerard! Loisel. Closely allied to J. compressus, but with more re- 

 mote stems and narrower strongly mucronate capsule not longer than the perianth. 

 Salt marshes, etc. May-July. 



**** Root-stock perennial, usually creeping. Stem solid. Leaves hollow and 



septate within. Testa not produced. 



J. Obtusiflorus Ehrh. Obtuse Rush. Stems not tufted, 2-3 ft. tall, rather 

 stout but soft and sheathed at the base. Root-stock widely creeping. Leaves 

 1-2, erect, terete like the stem. Cymes lateral or subterminal in very compound 

 corymbs, with zigzag branches. Perianth segments obtuse, as long as the ovoid 

 mucronate capsule. 

 Marshy places. May- July. 



J. articulatus L. = J. acutiflorus Ehrh. Jointed Rush. Very variable 

 in size and habit. Stems tall and slender ; leaves plainly jointed when dry. 

 Flowers in dense distant sessile or peduncled clusters of 3-12, dark chestnut 

 colour. Perianth segments as long as the narrow acuminate capsule. Stamens 6. 



Damp places in the hills, rare in the Var. May-July. 



There are two sub-species much commoner than the type in the south, viz. : 



J. lamprocarpus Ehrh. Stem slightly compressed and leaves plainly 

 septate when dry, cyme terminal, perianth-segments shorter than the narrow 

 beaked glossy capsule, inner segments obtuse. Stamens 6. 



Damp places, common. May-July. 



J. SUpinusMcench. =J. uUginosusRoth. Root-stock sometimes tuberous, 

 stems terete, 3-12 in., often floating with flaccid, straggling branches; joints 

 obscure ; leaves slender ; cymes terminal, branches few, long and suberect ; 

 bracts scarious, acute, perianth segments acute, as long as the ovoid obtuse 

 mucronate capsule. Stamens 3. 



In water and damp places near. June-July. 



J. Striatus Schousboe. Rhizomes thick and long. Stems i-2j ft., strongly 

 striate and with roughnesses. Leaves thick, knotted, striate. Flowers yellow- 

 brown in clusters of 6-20, forming a spreading panicle. Bracts long acuminate, 

 as well as the perianth segments. Stamens 6. Capsule reddish-brown, with 

 beak slightly exceeding the perianth. 



Damp places, uncommon. May-July. The Maures, Sollies-Toucas, Ampus, 

 by the river, and by the R. Var. 



J. lagenarius Gay. A more slender and less-branched species, with long 

 slender above-ground stolons. Leaves (often reduced to mere sheaths) cylindri- 

 cal, slender, short and knotted. Flowers brown or greenish in clusters of 6-12. 

 Perianth segments acuminate, distinctly shorter than the reddish capsule with 

 long beak. 



