CLASS XVI. ORDER X. 



57 



Hiyie compresseQ, carinate, villose above ; 

 leg^ume without down at the suture, (pea.) 

 Lathy'rus. Calyx with the 2 upper di- 

 visions shorter; style fiat, villose above, 

 broader toward the top; stems mostly 

 winged, leafets 2 or more, terminated by a 

 divided tendril, (sweet pea.) S. 



Vi'ciA. Calyx emaririnate above, 2- 

 toothed, 3 straight long teeth below ; banner 

 emarginate ; style bearded transversely on 

 the lower side beneath the stigma, (vetch.) 



Er'Vum. Calyx Scleft, segments linear, 

 acute, nearly equalling the corolla ; stigma 

 glabrous ; legume oblong, 2-4 seeded, 

 (creeping-vetch.) 



AsTRo'pHiA. Calyx campanulate, 5-cleft, 

 the 2 upper segments a little shorter; style 

 flat, linear, pubescent along the inside ; le- 

 gume broadly-oblong, compressed, few- 

 seeded. 



Oro'bus. Stylo linear; corolla long; 

 calyx obtuse at the base, upper segments 

 deeper, often shorter, (bitter vetch.) S. 



Pha'ca. Keel obtuse ; style not pubes- 

 cent ; stigma capitate ; legume 1-celled, 

 inflated. S. 



Phaseo'lus. Keel, stamens, and style, 

 spirally twisted together ; legume com- 

 pressed, falcate ; seeds sub-compressed, 

 reniform. (bean.) 



STROPHOS^TyLES. Gly'cine. Keel, sta- 

 mens, and style, spirally twisted together ; 

 legume terete, with a longitudinal half 

 breadth partition attached to one edge ; 

 seed reniform, sub cylindric. (wild bean.) 



A'pios. Glyci'ne. Calyx somewhat 2- 

 lipped, truncate, 1-toothed; keel of the co- 

 rolla falcate, bending back the apex of the 

 banner ; germ sheathed at tlie base ; legume 

 coriaceous, many-seeded, (ground-nut.) 



Amphicar"pa. Calyx bell-form, 4-tooth- 

 ed, obtuse, and naked at the base ; petals 

 oblong, banner broader, close pressed upon 

 other petals, sub-sessile ; stigma capitate ; 

 legume flat, stiped; seeds 2 to 4. (wild 

 bean-vine.) 



RoBix"iA. Calyx small, bell-form, 4-cleft, 

 upper divi.sion 2-parted ; banner large, re- 

 flexed, roundish ; legume compressed, elon- 

 gated, many-seeded ; seeds compressed. 

 Email, (locust tree.) S. 



Galac"tia. Calyx 4-toothed, with 4 

 bracts at the base ; petals oblong, standard 

 incumbent; anthers oblong; stigma obtuse ; 

 germ on a naked stipe ; legume terete, 

 many-f^ecded. 



Vexilla'ria. Calyx suiTOunded at the 

 base by 2 longer bracts, 5-cleft; corolla 

 resupinate ; standard large, covering the 

 wings ; style dilated at the apex ; legume 

 linear, compi-essed, straight, 2-valved, 

 many-seeded, (butterfly-weed.) 



Astrao"at,us. Keel obtu.se ; legume 

 more or less completely 2 celled ; lower su- 

 ture inflexcd. (milk-vetch.) 



Gale'ga. Tephro'sia. Calyx with sub- 

 ulate teeth, nearly equal; standard large, 

 roundish, pubescent without, rcflexed, 

 spreading ; legume compressed, linear, ma- 

 ny-seeded, (goat's rue.) 



Medica'go. Keel of the corolla -ieflected 



from the standard; legume compressed, 

 spiral, (lucerne clover.) 



Colu'tea. Calyx 5-clcft, with the keel 

 obtuse ; style bearded on its buck through 

 its whole length ; legume inflated, opening 

 on the upper suture at the base, (bladder 

 senna, bush locu.st.) Ex. 



Glycyrrhi'za. Calyx tubular, equal, H- 

 parted, spurred at the base ; .standard erect, 

 the sides reflexed ; wings spreading ; legume 

 ovate; floweri^i'in a rarc-nie. (liquorice.) S. 



Lupinas"ter. Calyx bell-form, 5-tooth- 

 ed ; teeth setaceous, one under the keel ; 

 stigma hooked ; legume terete, without 

 joints. S. 



OxYTKo'pis. Keel mucronate ; legume 

 with the upper suture inflexed. S. 



Indigofe'ra. Calyx spreading ; keel 

 with a subulate spur both sides ; legume 

 linear, small, terete or quaudrangular. (in- 

 digo.) S. 



Tri'gonei/'la. Banner and wings sub- 

 equal, spreading, resembling a 3-petalled 

 corolla ; legume often cui'ved, compressed 

 (feuu-greek.) S. 



B. Legume tvitho-ut transverse divisions or 



partitions ; seeds few, or single. 



Melilo'tus. Flowers racemed ; calyx 

 tubular, 5-toothed ; keel simple, shorter 

 than the wings and banner ; legume rugose, 

 longer than the calyx, or about as long. 

 (melilot clover.) 



Trifo'lium. Flowers sub-capitate; le- 

 gume included iia the cal3^x, not opening by 

 valves, 1 to 4-seeded ; leaves always ter- 

 nate. fclover.) 



Do'lichos. Banner with two oblong, 

 parallel, callous processes at the base, com- 

 pressing the wings beneath them, (cow- 

 hage.) S. 



Da'lea. Calyx half 5-cleft ; corolla partly 

 papilionaceous; wings and keel adnate to 

 the undivided column of stamens ; legume 

 1-seeded, included in the calyx. S. 



Psora'lea. Calyx 4-cleft, lower seg- 

 ments elongated ; legume the length of the 

 calyx, 1-seeded, beaked. S. 



C. Fruit or lament in scvernl joints, or in a 



single-seeded 2nece. 



Hedysa'rum. Calyx 4-cleft ; keel of co 

 rolla transversely obtuse ; loment many- 

 jointed; joints 1-sceded, truncate, com- 

 prcs.sed, generally hispid ; plants mostly 

 with ternate leaves. (bu.sh clover.) 



Lespede'za. Calyx 5-pai-ted, 2-braeted, 

 divisions nearly equal ; keel obtuse ; le- 

 gume 1-seeded; leaves always teniate. 

 (bu.sh clover.) 



iEscHYNOM'^ENE. Calyx 5-cleft, upper 

 lip 2-cleft, lower lip 3-cleft ; stamens in 2 

 equal sets ; loment compressed, one suture 

 straight, the other lobed. 



Stylosan^thes. Calyx tubular, very 

 long, bearing the corolla ; loment 1-2 joint- 

 ed, hooked. 



Desmo DiuM. Calyx with 2 bracts at tha 

 base, obscurely bi-labiate toward the middle, 

 upper lip bitid, lower one 3-parted ; copolla 

 papilionaceous: standard roundish; keel 



