CLASS XVI. ordb:r X. 59 



3orolla falcate, bending back the apex of the bsnner; germ sheathed at the 

 Dase; legume coriaceous, many-seeded, (ground-nut.) 



Amphi^car"pa. Calyx bell-form, 4-tooihed, obtuse, and naked at iTiebase; 

 petals oblong, banner broader, close pressed upon other petals, sub-sessile ; stig- 

 ma capitate; legume flat, stipid; seeds 2 to 4. (wild bean-vine.) 



Robi'nia. Calyx small, bell-form, 4-cleft, upper division 2-parted; bannp- 

 large, reflexed, roundish; legume compressed, elongated, many-seeded: seeds 

 compressed, small, (locust-tree.) 5'. 



Galac'tia. Calyx 4-toothed, with 4 bracts atthe base ; petals oblong, standard 

 incumbent; anthers oblong ; stigma obtuse; germ on a naked stipe; legume 

 terete, many-seeded. 



Vexilla'ria. Calyx surrounded at the base by 3 longer bracts, 5-cleft ; corolla 

 resupinate ; standard large, cov'ering the wings ; style dilated at the apex ; 

 legume linear, compressed, straight, 2-valved, many-seeded, (butterfly-weed.) 



Astrag"alus. Keel obtuse; legume more or less completely 2-celled ; lower 

 suture inflexed. (milk vetch.) 



Galega. Calyx with subulate teeth, nearly equal; standard large, roundish, 

 pubescent without, reflexed, spreading ; legume compressed, linear, many- 

 seeded, (goat's rue ) 



Medica'go. Keel of the corolla deflected from the standard; legume com- 

 pressed, spiral, (lucerne clover.) 



Colu'tf.a. Calyx 5-cleft with the keel obtuse; style bearded on its back 

 through its whole length ; legume inflated, opening on the upper suture at the 

 base, (bladder senna, bu.sh locust.) Ex. 



Glycyrrhi'za. Calyx tubular, equal 5-parted, spurred at the base; standard 

 erect, the sides reflexed; wings spreading ; legume ovate; flowers in a raceme, 

 (liquorice.) S. 



OxYTRo'pis. Keel mucronate; legume with the upper suture inflexed. S. 



Indigo'pera. Calyx spreading ; keel with a subulate spur both sides ; legume 

 linear, small, terete or quadrangular, (indigo) S. 



B. Lcguvie loithout transverse divisions or partitions; seeds feio, or single. 



Melilo'tu.s. Flowers racemed; calyx tubular, 5-toothed; keel simple, shorter 

 than the wings and banner; legume rugose, longer than the calyx, or about as 

 long, (melilor clover.) 



Trifo'lium. Flowers sub-capitate; legume included in the calyx, not opening 

 by valves, I to 4-seeded ; leaves always ternate. (clover.) 



Psor.a.'lea. Calyx 4-cleft, lower segments elongated; legume the length of 

 the calyx, 1-seeded, beaked. S'. 



C. Fruit or loment in several joints, or in a single-seeded piece. 



Hedys"arum. Calyx 4-cleft; keel of corolla transversely obtuse; loment 

 many-jointed; joins 1-seeded, truncate, compressed, generally hispid; plants 

 mostly with ternate leaves, (bush clover ) 



Lespede'za. Calyx 5-parted, 2-bracted, divisions nearly equal ; keel obtuse ; 

 legume 1-seeded; leaves always ternate. (bush clover.) 



jEschynom"ene. Calyx 5-clefl, upper lip 2-cleft, lower lip3-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- 

 jointed, hooked. 



Ci'cer. Calyx 5-parted, of the length of the corolla, 4 upper divisions resting 

 on the banner; legume turgid, 2-seeded. (chickpea.) Ex. 



Zor"nia. Calyx inferior, bell-form, 2-lipped ; banner cordate, revolute ; an- 

 thers half oblong, half globose; loment jointed, hispid. S. 



Coronil'la. Calyx 2-lipped; petals with claws; loment teretish, jointed flo-w- 

 ers in umbels; seeds generally cylindric. (coronilla.) Ex. 



Sesba'nia. Calyx 5-toothed ; legume terete jointed. Ex. 

 D. Stamens united in one set. 



Amor"pha. Calyx somewhat bell-form, 4 or 5-cleft ; banner ovate, concave; 

 •wing.? and keel 0; legume 1 or 2-seeded, falcate, (false indigo.) 



Lupi'nos. Calyx 2-lipped ; anthers, 5 ol;)long and 5 roundish ; legume cori- 

 aceous, torulose. (lupine.) 



Crotala'ria. Corolla with the banner cordate, large keel acuminate, the 

 membrane formed by the united filament, has a fissure on the back ; styie curv- 

 ed ; legurae pedicelled, turgid, (raltle-box.) 

 26* 



