42 



CLASS V. ORDER 11. 



and crowning it with its broad, scarious 

 limb, (salt-wort.) 



Atri'plex. Polygamous; caljTC "i-leaved, 

 5-parted, inferior ; style 2parted ; seed 1 ; in 

 the pistillate flowers the calyx is 2-parted. 

 (orach.) 



Plane'ra. Calyx membranous, bell- 

 form, 4 to 5-cleft; corolla 0; stigmas 2; 

 capsule globose, membranous, 1-celled, 1- 

 seeded ; stamens 4 to 6 ; polygamous. S. 

 Ko'CHiA. Calyx inferior, bell-form, 5-cleft, 

 forming a permanent band around the fruit, 

 somewhat resembliiig 5 petals ; corolla ; 

 style short ; stigmas 2 or 3, long, simple. S. 

 Ckl^tls. Perfect or polygamous; peri- 

 antli inferior, 5lobed ; drupe globose, 1- 

 seeded. (nettle tree.) 



Chenopo'diu-M. Calyx 5-parted, obtuse- 

 ly 5-angled, inferior; style deeply cleft; seed 

 I, lens-like, horizontal, invested by the 

 calyx, (pigweed, oak of Jerusalem.) 



Ul"mus. Calyx bell-form, vrithering; 

 border 4 or 5-cIeft ; seed 1, enclosed in a 

 flat, membranaceous samara; stamens vary 

 from 4 to 8. (elm.) 



Be'ta. Calyx 5 leaved ; seed kidney-form 

 A\'ithin the fleshy substance of the base of 

 the calyx, (beet.) Ex. 

 D. Plants nmbcllifcrous ; floivers 5-petal- 

 led, superior ; seeds 2. 

 Ertn"gium. Fruit ovate, with bristles ; 

 petals oblong, equal, inflected; flowers ag- 

 gregate, forming a head. 



CEnan"the. Carpels 3-ribbed (rarely 5- 

 ribbed) ; styles permanent ; germ oblong- 

 ovate, corticate, solid; apc.x denticulate; 

 perianth slenderly 5 toothed ; petals of the 

 disk and florets of the umbel, cordate-in- 

 flexed, sub-equal ; those of the ray florets 

 large and deformed ; general involucre 

 mostly wanting, (waterdrop wort.) 



Sanic"ula. Seeds with hooked prickles, 

 oblong, solid ; umbels nearly simple, capi- 

 tate ; flowers polygamous; involucre few- 

 flowered ; calyx 3-parted, permanent. 



Dau'cus. Seeds striate on their joining 

 sides, outer sides convex, having hispid 

 ribs ; involucrnm pinnatifid ; flowers sub- 

 radiate, abortive in the disk, (carrot.) 



Urasper".mum. [Osmorhiza.]* Seeds sub- 

 linear, solid, acute-angled, not striate ; ribs 

 5-acute ; angles a little furrowed, hispid ; 

 the joining-sides furrowed, and attached to 

 a 2-cleft columella like receptacle ; style 

 subulate, permanent, rendering the seed 

 caudate ; involucrum none, or few-leaved ; 

 fruit stiped, oblanceolate, polished, part of 

 it hispid, (sweet cicely.) 



[Seeds with wing-Wee ribs.'] 

 Hekac"leum. Seeds with winged mar- 

 gins, and 3 ribs on the back, obtuse, 3 

 grooves on their outer sides ; germ oval, 

 emarginate at the apex ; petals emarginate, 

 inilcxed; general involucre ; partial invo- 

 lucre 3 to 7-leaved ; flowers somewhat ra- 

 diated, (cow parsley.) 



' Where two or more generic names are 

 given, the pupil will understand that those 

 within the biackels are synonymes of the 

 other name 



Cni'dium. Involr, ,f e 1-leavedorO; frui 

 ovate, solid ; ribs 5, acute, somewhat wing 

 ed ; intervals sulcate, striate. 



Fer"ula. Calyx minute entire ; petals ob- 

 long, sub-equal; fruit sub-oval, compressed, 

 flat, wing-margined ; carpels with 3 dorsal 

 lines; intervals and joining sides 'striate; 

 universal involucre caducous ; partial ones 

 many-leaved. 



Angel^ica. Seeds with 3 ribs on then, 

 backs, and winged margins; intervals be- 

 tween the ribs grooved ; germ oval, corti- 

 j cate ; general involucrum none, (angelica.) 



Pastina'ca. Seeds emarginate at the 

 apex, somewhat winged ; ribs 3, besides the 

 wings ; intervals striate ; joining-sides 2- 

 striate ; germ oval, compressed ; perianth 

 calyx entire ; i)etal3 entire, incurved, sub- 

 equal ; involucrum none, (parsnip.) 



Tre'pocar"pus. Calyx 5-toothed ; teeth 

 subulate; petals obcordate, with inflexed 

 margins; fruit pyramid angled ; commissure 

 thick furrowed in the middle, filleted within. 



Peuceda'num. Calyx minute, Stootbed , 

 petals oblong, incurved, equal; fruit oval, 

 compressed, surrounded with a winged 

 margin, having 5 striae on each carpel, and 

 elevated intervals, joining-sides flat, (sul- 

 phur-wort.) 



Auchemo'ra. Calyx with the margin 

 S-toothed ; petals obcordate, with inflexed 

 divisions ; fruit compressed at the back ; 

 sides dilate into a membranaceous margin, 

 rather broader than the seeds • leaves pin- 

 natifid ; no general, involucre, but many- 

 leaved partial ones , flowers white. 



Thas^pium. Calyx 5-toothed at the mar- 

 gin ; petals oval, tapering into long inflexed 

 apexes ; fruit not contracted at the side, sub- 

 oval ; wings sub-equal, filleted at the join- 

 ing edges ; carpel terete ; no general invo- 

 lucre, partial ones 3-leaved. 



Ses"eli. Umbel globose ; margin of the 

 calyx S-toothed ; petalsobovate ; fruitoblong 

 or oval, crowned with a reflexed style. 



Seei'num. Fruit oval oblong, compressed, 

 flat, striate in the middle ; involucrum re- 

 flected ; petals cordate, equal ; calyx entire. 



Ane'thum. Seeds flat or convex, 5-rib- 

 bed ; germ lenticular, compressed : calyx 

 and petals entire ; involucrums none, (fen- 

 nel, dill.) Ex. 



[Seeds iciili 3 ribs nearly equal\ 



Hydrocot"yt.e. Umbel simple; fruit 

 compressed, sub-rotund, (marsh pennywort.) 



Ckith"mum. Fruit elliptical, ribbed, 

 crowned ; petals elliptical, acute, incurved, 

 equal ; styles short or thick, with swelled 

 ba-se.**. Ex. 



Ca'rum. Seeds oblong ovate, striate; pe- 

 tals carinate, emarginate, inflexed ; invo- 

 lucrum about 1-leaved. (caraway.) Ex. 



[Seeds ivilh 5 ribs nearly eqtuiL] 

 Co'nium. Seeds 5-ribbed ; ribs at first 

 crenate, with flat intervals between them ; 

 germ ovate, gibbous ; perianth entire ; petals 

 unequal, cordate, inflexed ; general involu- 

 crum about 3 to ."j-leaved ; partial ones most- 

 ly 3-leaved, unilateral, (poison hemlock.) 

 Gicu'ta. Seeds gibbous-convex, ribs 5 



