CLASS xx. liii 



PA08. 



Amaranthus— Ca'yx dry anil scarious. Styles 2 or ?>, filiform. Utricle open- 

 ing all round, 1 -seeded. — / lowers tpihe<lus tired. 3C0 



* * JbjmaHa herbs. 



MTW0PHY1XUM —Flower* spiked. St-'m^ns 4*or-€; Sepals and petals adherent 



to the 4-celled nutlet. — Aquatic Mttrbs. 117 



Bbiociui/ix.— Sepals and petals free. Capsule --celled, 2-*eed< d. SUgmas ".— ^ 

 Leaves linear. 304 



Order V. Pentandria. — 5 Stamens. 



Awa.Ram rnts. — Calyx dry and scarious.— Coarse weedy herbs, vcith minute spike- 



clustered Jlvwers. 300 



Order VI. IIexandria.— G Stamens. 



ZriAXU.— Staminate and pistillate flowers in 1 -flowered spikcleis in the earns 



pnaiclc. — Large and often Seed-like water -grasses. &$ 



Order VII. Polyandria. — Mmy Stamen* 



ENJClDAJfHB. — Styles- 2. Opsale 2-beaked, 2-celled, several-seeded.— Tree*. 



Leaves deep'y 5 to 1 lobed. 833 



PLATANra.— Style 1. Nutlets club -3 lisped, 1-celkd, l-secded.— TV e<s. Lecves 



jHilmauhj lobed. 3Si 



* * St a ruinate flowers mostly ifiamenfs. Trees or shrubs. 



fCU PUMPER .it— Treas or shrub-) with alternate eiralsrht- veined Ipjws, de- 

 ciduous stipules, th> sterile flowers in amVntu or clusters, and the f< rtil ! 

 Solitary or clustered, furniihud with an involucre which forma a cup or 

 covering to the 1-celled, 1 seeded nut. 320, 



* Fertile lowers scattered or few in a cluster. 



1. QuEitcr/S. — Involucre 1-flowcred, of many imbricated small .scales, forming 



a cup around the base of the acorn. •*-* ' 



2. CaWanka.— Involucre 2 or 3 flowered, forming a prickly burr, ine'esirg 1 



to 3 leathery nuts, opening by 1 waives. *23 



3. FaGUS.— Involucre 2nowe»ed, somewhat prickly, i^ralved, Inclosing 2 



sharply S-angled nuts. 324 



4» Coryi.os.— Involucre 1 or 2-flowerpd, formed of 2 or 3 confluent pcale", 

 which become leafy, much enlarge! and cut-Lorn at the apex, inclosing 

 a bony nut. 324 



** EtrUk flowers clustered in a kind of a:neut; 

 6. Cakpi.nus. — Involucre a separate open leaf. 325 



6. Ostkya.— Involucre a bladdery bag, l-floweredl 325 



| \ J'J'JLAXDAOE.E. — Trees w ; th alternate unequally pinnate leave". Fruit 

 a kiud of dry drape witlr a bor.y endooarp (uut-shell), containing a 

 largo 4-lobed seed: 313 



fft Stamens IS to many.— Herb*. 



Cehatophyllum. — Calyx herbaceous. Aehenium horned.— Aquatic herbs, with 



whorled finely, dissected leanest 3 13. 



Saqittari v.— Sepafc and petals 3, free.— Leaves mostly sagittate. Flowirs 



whitish. 364 



tttt ARACB^B. — Plants with acrid or pungent juiee, simple or compound 

 leaves, and with .he (lowers crowd-d ou a *padkt, usually sunoundjd 

 by aspathe. Berry 1-celled. S4«> 



* Spadix surrounded by a spathj. 



L ArouL— Flowers naked, cohering the bass only of. the spadix. 34& 



