64 



CLASS XX- ORDER II. 



Plata'nus. Ament globose. Staminate 

 flowers : corolla none, or scarcely a})parcnt; 

 anthers growiiig around the lilamenLs. Pis- 

 tillate flowers : calyx many-leaved ; style 

 with a recurved stiama ; seed roundish, 

 crowned with the niucronate style, witli ! 

 egret-like hairs at the base, (button-wood, 

 false sycamore.) 



Ju'glans. Staminate flowers : ament im- 

 bricate ; calyx a scale, generally 5 pai-ted ; 

 corolla 4 or 5-partcd ; stamens 18 to 36. Pis- 

 tillate flowers : calyx 4-cleft, superior; co- 

 rolla 4-cleft or 4parted ; styles 1 or 2 ; drupe 

 partly spongy ; imt rugose and irregularly 

 ftiiTo'wed. (butternut, black-walnut.) 



Car'ya. Staminate flowers : ament im- 

 bricate ; calyx of 3 parted scales ; corolla ; 

 stameus'4 to' 6. Pistillate flowers : calyx 4- 

 cleft, superior ; corolla ; styles ; stigma 

 disk-like, 4-lobed ; pericarp 4-valved ; nut 

 sub- quadrangular, even, (hickory, walnut.) 



Liql"idam"i}ER. Staminate flowers: 

 ament conical, suiTounded by a 4-leaved in- 

 volucre; perianth none. Pistillate flowers: 

 ament globose ; perianth 1-leafed, urceolate, 

 2-flowered ; styles 2 ; capsules 2, 1 -celled, 

 many-seeded. (sw%et gum-ti-ee.) S. 



Os"trya. Staminate flowers : ament cyl- 

 indrical ; scales 1 -flowered ; perianth ; fll- 

 aments branched. Pistillate flowers : ament 

 naked ; capsule inflated, imbricate, (iron 

 wood, hop, hornbeam.) 



Carpi'nus. Staminate flowers: anient 

 long-cylindric ; scales ciliate at the base ; 

 stamens 8 to 14, somewhat bearded at the 

 top. Pistillate flowers : strobilum loose ; 

 scales leafy, 2-flowered ; stigmas 2 ; nut 

 long, sulcate, 1-seeded. (horn-beam.) 



ORDER XV. MON^ADELPHIA. 



Jatro'pha. Staminate flowers : calyx 5- 

 leaved or wanting ; corolla funnel-form ; 

 stamens 10, alternately shorter. Pistillate 

 flowers : calyx ; corolla 5-pctaIled, spread- 

 ing ; style 3-cleft ; capsule 3-celled, seed 1. 

 (physic-nut.) S. 



Cro'tox. Staminate flowers : calyx 5- 

 toothed ; petals 5 or \vanting ; stamens 10 

 to 15. Pistillate flowers : calyx 5-leaved or 

 none ; corolla none ; .styles 2-cleft ; capsule 

 3-grained, 3-celled, 3-seeded. S. 



Stillin"gia. Staminate flowers: invo- 

 lucre hemispherical, many-flowered or want- 

 ing ; perianth tubular, eroded ; stamens 2 or 

 3, ex.sert. Pistillate flowers : calyx 1-flow- 

 ered, inferior ; style 3-cleft ; capsule 3-gTaiu- 

 ed. (tallow-tree.) S. 



Melo'thria. Staminate flowers : calyx 

 l-flowered, 3 to .5-toothed; corolla bell-form ; 

 filaments 3. Pistillate flowers : calyx and 

 corolla superior ; style 1 ; stigmas 3 ; beny 

 3-celled, many-seeded, (creeping cucum- 

 ber.) 



Momor"dica, ■ Staminate flowers : calyx 

 5 or 6-cleft ; corolla 5 or 6-parted ; filaments 

 3. Pistillate flowers : style 3-cleft ; berry 

 gourd-like, and bursting elastically; seeds 

 compressed. (bal.sam apple, wild cucum- 

 Der.) 



Cu'cDMis. Staminate flowers: calyx 5- 

 toothed ; corolla 5-parted ; filaments 3. Pis- 



tillate flowers : caJyx and corolla like the 



.laminate ; .«tiirnias 3, thick, 2parted ; beny 

 witii pointed seeds, (cucumber, musk-mei 

 on.) Ex. 



CucuK"niTA. Staminate flowers : calyx 

 5-tootlied ; corolla ."i-cleft ; filament.s 3. Pis- 

 tillate flowers : calyx and corolla like the 

 staminate ; pistil 3-cleft ; berry large, 3 to 

 .'i celled ; seeds thickened at the margin 

 (gourd, squash, pumpkin, water-melon.) Ex 



Rici'nus. Staminate flowers : calyx 5 

 parted ; stamens numerous. Pistillate flow- 

 ers : calyx 3-parted ; styles 3, 2-cleft ; cap- 

 sules echinate, 3-celled, 3-seeded. (palma 

 christi, or castor oil plant.) Ex. 



Sic'''yos. Staminate flowere: ament im- 

 bricate; calyx 5-toothcd, teeth subulate, 

 corolla 5-parted ; filaments 3, or perhaps 5 

 m 3 sets. Pistillate flowers : .style 3-parted; 

 stigmas thick, 3-parted ; frait 1-seeded, often 

 spinose. (single-seed cucumber.) 



Pi'nus. Staminate flowers : calyx 4-leav- 

 ed, peltate ; corolla ; stamens many ; an- 

 thers naked, 2, sessile, l-ceUed. Pistillate 

 flowers : calyx in strobilums or cones ; 

 scales close-imbricate, 2-flo'\vered ; pistil 1 ; 

 nut with a membranaceous wing, or a sa- 

 mai-a. (pine.) 



CuFREs'^sus. Staminate flowers : ament 

 ovate, imbricate ; calyx a peltate .scale ; co- 

 rcUa ; anthers 4, sessile. Pi-stiflate flow- 

 ers : ament strobilaceous ; cahTC a 1 flow- 

 ered, peltate scale ; corolla ; germs 4 to 8, 

 under each scale of the calyx ; nuts angu- 

 lar, compressed, (white cedar.) 



Thu'ja. Staminate flowers : ament im- 

 bricate ; caly:x and corolla ; anthers 4, ses- 

 sile. Pistillate flowers : strobilum with the 

 scales 2-flowered ; corolla ; nut 1, winged, 

 (arbor vitae.) 



Phyllan'^thus. Staminate flowers : ca- 

 lyx 5 or 6-partcd ; filaments often columnar; 

 anthers 3. Pistillate flower resembling the 

 staminate ; nectary a 12-angied mai-gin ; 

 styles 3 ; capsules mostly 3-grained. (leaf- 

 flower.) 



Acaly'pha. Staminate flower : calyx 3 

 to 4-parted; corolla 0; stamens 8-16. Pis- 

 tiflate flower : calyx 3-leaved ; coi'oUa ; 

 styles 3 ; capsule 3-celled. (three-seed mer 

 cuiy.) 



CLASS XX. DICECIA. 



ORDER II. DIANDRIA. 



Sa'lix. Staminate flowers : ament cylin 

 dric ; calyx a l-flowered scale, Avith a nee 

 tariferous gland at the base ; stamens 1 to 6 

 Pistillate flowers : ament and calyx like the 

 staminate ; stigmas 2, generally 2-cleft , cap 

 sule 1-cclled, 2-valved ; seeds many, with 

 egret-like down, (willow.) 



Frax"inus. Polygamous. Perfect flow 

 crs : calyx 0, or 3 or 4-parted ; corolla 0, oi 

 4-petalled ; pistil 1 ; samara 1-seeded, wit! 

 a lanceolate wing. Pistillate flowers : ca 

 lyx, corolla, and pistils, same as perfect 

 (ash.) 



Vallisne'ria. Staminate flowers : spa- 

 tha ovate, 2-parted ; spadix covered with 

 minute flowers ; calyx 3-parted. Pistillate 



