Okdek 46.— leguminous PLANTS. 



191 



seeded, longer than the permanent calyx. 

 Flowers in racemes. 



1 M. offioiua'Us. Yellow M. Leaflets obovate-oblong, obtuse, dentate, 

 as long as the yellow corolla. Pod 2-seeded. Stem 8f. 



White M. Leaflets ovate-oblong, square at end. Calyx not half as long 

 Pod 2-seeded. Height 4r-6f. Very fragrant. 



Leaves pinnately trifoliate. 



Calyx half 



2 M. alba. 



as the white corolla, 



450^^ 



5. TRIFO'LIUM. Clover. TrefoU. 



Calyx 5-oleft, with bristly teeth, persist- 

 ent. Petals more or less united at the base, 

 persistent and withering. Banner longer 

 than the wings, which are also longer than 

 the keel. Stamens 10, diadelphous (9 & 1). 

 Legume short, membranous, often included 

 in the calyx, 1-6-seeded, mostly indehis- 

 cent. — Herbs with palmately trifoliate 

 leaves. Leaflets straight-veined. Flowers 

 in heads or spikes. Apr-Sept. 



* Flowers yellow, in small, dense, oval heads. 



Podl-seeded 1, 2 



* Flowers cyanic (not yellow) ... .a 



a Flowers on little stalks (pedicels) and 



finally deflexed b 



a Flowers nearly or quite sessile, never de- 

 flexed c 



b Heads small, on stalks some ten times longer 3, 4 



b Heads large, on stalks two or three times longer 5, 6 



c Calyx teeth feathery, longer than the whitish corolla. . . .7 

 o Calyx teeth shorter than the purple or roseate corolla. . . .8-10. 



1 T. prooum'bens. TeUow 0. Stipules much shorter than the petioles. Style 3 or 



4timesshortertlianthepod. Heads ovate, i in. thick. Stems prostrate. May. 



2 T. agra'rinm. Larger Yellow G. Stipules longer than the petiole. Style about 



as long as the pod. Heads oblong, i in. thick. Stems ascending. June, July. 



3 T. Oarolinia''iinm. Southern G. Stipules leaf-like. Calyx teeth thrice longer 



than its tube. Legume 4-Beeded. Scarcely forms a turf. W. S. 



4 T. repens. White C. Sha/mrooh. Stipules narrow, scale-like. Calyx teeth 



shorter than its tube. Pod 4-seeded. Forms a dense turf. Fls. white, c. 



5 T. reflexnm. Buffalo G. Lflts. obovate. Calyx nearly as long as the red Gorolla. 



6 T. stoloni'feram. Prairie 0. Leaflets oboordate. Calyx not half as long as the 



white corolla. W. ' ' 



Fig, 447. Eed Clover,— a head of 

 iHowcrs. Mg. 448. A single flower. 

 Fig. 449. A pod, with a part of the 

 calyx. Fig. 450. A seed, out open. 

 Bee also F^g. 87. 



