LEGUMINIFER^. 41 



Stem rather slender, zigzag, 9 inches to 3 feet high. Lower 

 leaves on long stalks, petioles becoming shorter as they are placed 

 higher on the stem; leaflets 1 to 2 inches long, rather rigid, with 

 prominent veins, and an edging of soft hairs. Stipules f to 1^ inch 

 long, with the free portion one-half of their length or more, herba- 

 ceous except along the line of junction with the petiole. Flower- 

 heads terminal, more rarely axillary, in the latter case without a 

 pair of leaves beneath ; solitary or in pairs, 1 to 1-i- inch in diameter, 

 becoming a little elongated in fi'uit. Flowers f inch long, purplish- 

 rose. Pod splitting longitudinally, with an ovoid smooth seed. 

 Plant bright-green, slightly glaucous, sparingly hairy. The leaflets 

 glabrous when fully grown. 



A taller and more straggling plant than T. pratense, with larger 

 and firmer leaflets, very different stipules, and deeper-coloured 

 flowers. 



Zigzag Trefoil, Cow Clover, Meadoio Clover, Marl Grass. 



French, Trejle inlermediaire. German, Mittlerer Elee. 



This species is sometimes cultivated in England as a fodder plant, but it is not 

 generally a favourite, being less productive than the Red Clover and more difficult to 

 extirjiate when once grown. Its chief recommendations seem to be that it will resist 

 drought and thrive on cold tenacious soils. Some wiiters, such as Sinclair, recommend 

 it as preferable to any other species for permanent pasture on light dry soils. 



SPECIES IV.— TRIFO LIU M OCHROLEUCUM. Linru 



Plate CCCXLIX. 



Eootstock branched, producing tufts of leaves, and nearly 

 straight ascending simple or very slightly branched stems. Leaves 

 distant ; leaflets obovate, oval, or elliptical, those of the lower 

 leaves notched at the apex ; all finely denticulate on the margins, or 

 almost entire. Stipules sub-herbaceous, with few veins which do 

 not anastomose, adnate for about one-half their length, with 

 the free portion lanceolate-acuminate. Uppermost leaves oppo- 

 site, a little way below the flower-heads, with dilated stipules. 

 Flower-heads shortly stalked, terminal, globose, at length ovoid. 

 Calyx-tube 10-ribbed, with the throat nearly closed by 2 opposite 

 callosities resembling lips ; teeth rather slender, lanceolate-sub- 

 ulate, with a thick central nerve; upper 4 shorter than the 

 calyx-tube, the lower one three times as long as the upper ones, 

 becoming rigid and spreading, but scarcely enlarged in fruit. 

 Corolla twice as long as the calyx. Plant pubescent. 



In pastures, fields, and thickets, on dry clayey or gravelly soils. 

 VOL. III. G 



