58 



CLASS XVIL ORDER J. 



obtuse, not truncate ; wings longer than the 

 keel ; stamens diadelphous (3 and 1) ; fila- 

 ments 8ub-persisteut ; legume with many 

 joints; joints compressed, 1 -seeded, membra- 

 naceous or coriaceous, scarcely dehiscent. 



Ci'cER. Calyx 5-parted, olthe length of 

 the corolla, 4 upper divisions resting on the 

 banner; legmne turgid, 2-scedcd. (chick- 

 pea.) Ex. 



ZoH^NiA. Calyx inferior, bell-form, 2- 

 lipped ; banner cordate, revolute ; anthers 

 half oblong, half globose ; loment jointed, 

 hispid. S. 



Cokoxil"la. Calyx 2-lipped; petalswith 

 claws; loment teretish, jointed flowers in 

 umbels ; seeds generally cylindric. (coro- 

 nilla.) Ex. 



Sksba'nia. Caljoc 5 toothed; legume te- 

 rete jointed. Ex. 



D. Slamcns united in one set. 



Amor"pMa. Calyx somewhat bell-form, 

 4 or 5-cleft ; banner ovate, concave ; wings 

 and keel ; legume 1 or 2-seeded, falcate, 

 (false indigo.) 



Lupi'nus. Calyx 2-lipped; anthers, Sob- 

 long and 5 roundish ; legume coriaceous, 

 torulose. (lupine.) 



Crotala'kia. Corolla with the banner 

 cordate ; large keel acuminate, the mem- 

 brane formed by the united filament, has a 

 fissure on the back ; style curved ; legume 

 pedicelled, turirid. (rattle-box.) 



Gesis'ta. Calyx 3-lipped, upper lip with 

 2, lower lip with 3 teeth, (dyer's broom.) 



Spar"tium. Stigma longitudinal, pubes- 

 cent above ; filaments adhering to the ova- 

 ry ; calyx lengthened at the base. (Spanish 

 broom.) Ex. 



U'LEX. Calyx 2-leaved, 2-bracted ; sta- 

 mens all miited ; legume about the length 

 of the calyx, spiuose. (furze.) S. 



Ara'chis. Calyx 2-lipped; corolla in- 

 verted ; legume gibbous, torulose, veiny, 

 coriaceous, (pea-nut.) Ex. 



Pitch"eria. Calyx tubular, somewhat 

 2-lipped, 5-cleft, divisions subulate, upper 

 lip bifid, equal to the lower one ; wings 

 narrow, subulate, 1-toothed ; style filiform, 

 ascending ; legume oblong, 2-seedtfd, scarce- 

 ly exceeding the calyx. S. 



Erythri'na. Calyx .2-lipped; banner 

 long, lanceolate ; legume torulose, many- 

 seeded, (coral-tree.) S. 



CLASS XVIL SYNGENESIA. 



ORDER I. POLYGAMIA JEQUALIS. 



A. Florets ligulate. 



CiCHo'uiu.M. Calyx calycled ; egret plu- 

 mose, sessile, unequal ; receptacle some- 

 what chaffy, (succory or endive.] 



Leon"todon. Calyx double, mibricate, 

 with flexible leafets ; receptacle naked ; 

 egret stiped. (dandelion.) 



Pren'an"thes. Florets from ."j to 20, in 

 a simple series (or in one circular row) ; 

 calyx calycled ; receptacle naked ; egi-et 

 simple, sub-sessile, (white lettuce.) 



L.'VCTU'cA. Calyx imbricate, cylindric, 

 with the marcrin of the scales membrana- 



ceous ; receptacle naked ; egret simple, sti- 

 ped; seed smooth, (lettuce.) 



Hiera'cium. Calyx imbricate, ovate, 

 egret simple, ses.sile ; recej)tacle naked, 

 punctate, or sub-pilose. [From white be- 

 coming yellowish.] (hawk-weed.) 



Apar"gia. Calyx mibricate ; receptacle 

 naked, punctate ; egret plumose, ses.sile, un- 

 equal, (false hawk-weed.) 



Son"chus. Calyx imbricate, swelling a 

 the base ; receptacle naked ; egret simple 

 sessile, (swine thistle.) 



Kri'gia. Calyx many -leaved, simple, 

 receptacle naked ; egret double, exterior 5 

 to 8-leavcd, interior of 5, 8, or 24 scabrous 

 bristles, (dwarf dandelion.) 



Troxi'imon. Calyx oblong, cone-like, 

 many-sepallcd, sepals unequal, imbricate, 

 receptacle naked ; egret sessile, pilose. S. 



Apo'gon. Calyx 8-sepalled, in a double 

 series ; receptacle naked ; egi'et 0. S. 



Chondril"la. Receptacle naked ; egret 

 pilose, stiped; calyx calycled ; florets in 

 many series. S. 



Tragopo'gon. Calyx simple, many- 

 leaved ; receptacle naked ; e.gi-et plumose 

 and stii>ed, (goat's-beard, vegetable oyster.) 

 Ex. 



B. Florets tuhuloiis ; flowers cajyilale. 



Arc"tium. Calyx globose, with scales 

 hooked at the apex ; egret chaff-bristly ; re- 

 ceptacle chafTy. (burdock.) 



Cni'cus. CaljTC sweUing, imbricate, with 

 prickly scales ; receptacle villose ; egret ca 

 ducous, plumose, (thistle.) 



Car"du'us. Calyx ovate, imbricate, with 

 prickly scales ; receptacle villose ; egret pi- 

 lose, (comb-tooth thistle.) 



Cartha'mus. Calyx ovate, imbricate, 

 with scales, ovatish, leafy at the apex ; egret 

 chalf-haiiy, or none ; receptacle chaff'-bristly. 

 (false saffron.) Ex. 



Saussu'rea. Involucre sub-cylindric ; 

 scales imbricate, beardless ; receptacle se- 

 tose or chaffy ; egret in 2 series, outer series 

 short, filiform, inner one long and plumose 

 anthers cordate, sub-entu-e ; bony akenes 

 glabrous. 



Cyna'ra. Receptacle bristly ; calyx di- 

 lated, imbricate, scales with fleshy bases 

 emarginate and pointed ; egret plumose, 

 sessile, (garden artichoke.) Ex. 



Ammo'bium. Anthers with 2 bristles al 

 tlie base ; chaffs of the receptacle distinct 

 egret with toothed edge ; sepals imbricated 

 colored, radiated. 



On'opor'don. Calyx ventricose, imbri 

 cate, \vith spi-eading, spinous scales ; recep 

 tacle alveolate ; egi-ct capillary, deciduous, 

 scabrous, (cotton thistle.) 



Lia'tris. Cah-x oblong, imbricate; re 

 ceptacle naked ; egict plumo.se, pensistent 

 (mostly colored) ; seed pubescent, striate. 



Verno'nia. Calyx imbricate, ovate ; egret 

 double, exterior short, chaffy, interior capil- 

 lary ; receptacle naked ; stigma 2-cleft. 



Stoke'sia. Involucre foliaceou.s, sub nn- 

 bricate ; florets of the ray funnel-form and 

 I regiilar; receptacle naked ; egre' 4-bristlod. 

 1 S. 



