EXOGENS. 



KXOOENS. 



IL UBTICALM. Flowen Mattered, monochlamydeous. Carpel 

 ingle, superior. Embryo Urge, lying in a small quantity of 

 albumen. 



Stilagmacetr. Radicle superior. Ovule* twin, suspended. Embryo 

 straight, albuminous. Anthers 2-lobed, with vertical fissures. 



I'rtieoeete. Radicle superior. Ovule solitary, erect. Embryo 

 straight, albuminous. Juice limpid. Stipules small, flat. 



CmUop*yUace<r. Radicle inferior. Embryo exalbuminous. Plumule 

 tunny-leaved, large. 



. Radicle superior. Ovule solitary, suspended. 



Embryo hooked, exalbuminous. 



Hornet*. Radicle superior. Ovules solitary, suspended. Embryo 

 hooked, albuminous. 



Ariocarpaettt. Radicle superior. Ovule solitary, erect or sus- 

 pended. Embryo straight, exalbuminous. Juice milky. Stipules 

 large, convolute. 



Platanatea. Radicle inferior. Embryo albuminous. Plumule 

 minute. Juice limpid. Stipules large, deciduous. 



HI. ErpHORBiALES. Flowers scattered, monochlamydeous. Carpels 

 consolidated, superior. Placentae axile. Embryo surrounded by 

 abundant albumen. (Albumen occasionally absent.) 



Euphorbiacffc. Ovules definite, suspended, anatropal. Radicle 

 superior. 



Gyrottemontfc. Ovules definite, suspended, campylotropal. Radicle 

 inferior. Albumen mealy. 



Sctpacttt. Ovules definite, suspended, anatropol. Radicle superior, 

 $ , amentaceous. 



Callitrichacetr. Ovules definite, suspended, araphitropaL Radicle 

 superior. 



Empetnuxa. Ovules definite, ascending, anatropol. Radicle 

 inferior. 



Batidt. Ovules solitary, ascending, $ , naked, combined into a 

 succulent cone. 



Neptntkacea. Ovules 00, ascending. Radicle inferior. Seeds 

 Rcobiform. 



IV. QUERXALES. Flowers in catkins, monochlamydeous. Carpel 

 single, superior. Embryo large, lying in a small quantity of 

 albumen. 



Corylaeea. Ovary 2- or more celled. Ovules pendulous or peltate. 

 Juglandacat. Ovary 1-celled. Ovule solitary, erect. 



V. GABRTALES. Flowers monochlamydeous, sometimes amen- 



taceous. Carpels inferior. Embryo minute, in a large quantity 



of albumen. 



Garryacea. Flowers amentaceous. Leaves opposite, stipulate. 

 Helwingiacta. Flowers fascicled. Leaves alternate, stipulate. 



VI. MENISPERMALES. Flowers monochlamydeous. Carpels supe- 

 rior, disunited. Embryo surrounded by abundant albumen. 



Monimiaceit. Albumen copious, solid. Seeds pendulous. Embryo 

 small, external. Stamens perigynous. 



Atherotpermaeea. Albumen copious, solid. Seeds erect. Anthers 

 opening by recurved valves. 



Myritticacae. Albumen copious, ruminated. Sepals united into 

 a valvate cup. 



Lardizabalacae. Albumen copious, solid. Seeds parietal. Embryo 

 minute. 



Sckixandraeta. Albumen copious, solid. Seeds pendulous. 

 Embryo minute, internal Stamens hypogynou*. 



Mcnuptrmacete. Albumen sparing, solid. Seeds amphitropal. 

 Embryo large. 



VII. CUCURBITAI.ES. Flowers monochlamydeous. Carpels inferior. 

 Placenta parietal. Embryo without albumen. 



CiKurbitacca.VnM pulpy. Placenta; strictly parietal. Monope- 



Ulous. 



JMueaeete. Fruit dry. Placenta; strictly parietal. Apetaloua, 

 Btgoniacca. Fruit dry. Placenta: projecting and meeting in the 



axis. Monodichlamydeou*. 



VIIL PAPATALO. Flowen dichlamydeous. Carpels superior, con- 

 solidated. Placenta) parietal. Embryo surrounded by abundant 

 albumen. 



Papayacea. Corolla raonopetalous ; ?, without scales. 

 Pamgiaette. Corolla polypetalou* ; ? , with scales in the throat. 



Sub-Class II. Hypogynous Kxogens. 



Flowers $, or <J $ ?. Stamens entirely free from the calyx 

 and corolla. 



IX. VIOLAUH. Flowers monochlamydeou*. Placenta; parietal, or 

 sutural. Embryo straight, with little or no albumen. 



Flaco*rliaera.~Vlnwen scattered, apetalous, or polypetalmm 

 Petals and stamens both hypdgynou*. Leave* dotless, or with num. 

 dot* only. 



LaeiHemaeea. Flowen in catkins, apetalous, scaly, polygamous 

 Stamens unilateral. 



. Flowers scattered, apetalous, tubular, hermaphrodite, 

 .eaves marked with both round and linear transparent dots. Stamens 

 >erigynoUB. 



Pauijloracea!. Flowen polypetalous or apetalous, coronrtted. 

 'etals perigynous, imbricated. Stamens on the stalk of the ovary. 

 Style* simple, terminal. Seeds arillate. Leaves stipulate. 



Maletherliiacta. Flowers polypetalous, coronetted. Petals ] 

 nous, imbricated. Stamens on the stalk of the ovary. Styles simi !, 

 dorsal. Seeds without aril. Leaves without stipules. 



Moringaceoe. Flowen polypetalous. Calyx many-leaved. Petals 

 wrigynous. Anthen 1-celled. Fruit stipitate, consolidated, siliquose. 

 Seeds without albumen. Stamens perigynous. 



Violacea. Flowers polypetalous. Calyx many-leaved. Petals 

 lypogynous. Stamens all perfect. Anthers crested and turned 

 inwards. Fruit consolidated. Seeds albuminous. 



Franktniatcea. Flowera polypetalous. Calyx tubular, furrowed. 

 Petals hypogynous, unguiculate. 



Tamaricacea. Flowers polypetalous. Calyx many-leaved. Petals 

 lypogynous. Styles distinct. Fruit consolidated. Seeds 00, basal, 

 comose, without albumen. 



Sauvagctiaccie. Flowers polypetalous. Calyx many-leaved. Petals 

 lypogynous. Stamens partly sterile and petaloid. Anthers opposite ; 

 the petals naked, turned outwards. Fruit consolidated. Seed* 

 albuminous. 



Cratfulace<f. Flowers polypetalous or monopetalous. Calyx many- 

 .eaved. Petals hypogynous. Fruit follicular, apocarpous. 



Turneraeete. Flowers polypetalous. Petals jwrigynous, contorted. 

 Styles forked. Leaves exstipulate. 



X. CISTALES. Flowers monochlamydeous. Placenta- parietal or 

 sutural. Embryo curved or spiral, with little or no albumen. 



CiftcKtte. Stamens not tetradynamous, generally indefinite. 

 Flowers ty or y. Seeds with albumen. Fruit closed up. 



Bratrieacece. Stamens tetradynamous. Flower* ij. 



Jietedacta. Stamens not tetradyuamous, definite. Flowers not 

 tetramerous. Seeds without albumen. Fruit usually open 

 point. 



Capparwlacea;. Stamens not tetradynamous. Flowers 4. Seeds 

 without albumen. Fruit closed up. 



XI. MALVALES. . Flowers monochlamydeous. Placenta; axile. 

 Calyx valvate in aestivation. Corolla imbricated or twisted. Sta- 

 mens definite or 00. Embryo with little or no album, -n. 



Stereuliacea!. Stamens columnar, all perfect. Anthers 2-wlled, 

 turned outwards. 



Byttncriacea. Stamens monadelphous, in most cases partly sterile. 

 Anthers 2-celIed, turned inwards. 



Virianiacett. Stamens free. Disc none. Seeds with album. 

 Embryo curved. Petals permanent. Calyx ribbed. 



Tropaolactft. Stainena free. Disc none. Seeds without albumen. 

 Embryo amygdaloid. 



Malracea. Stamens columnar, all perfect. Anthers l-celknl, 

 turned inwards. 



Tiliaccte. Stamens free, on the outside a disc. Seeds with albumen. 

 Embryo straight. 



XII. S.U'mm.KS. Flowers monochlamydeous, unsymmc ' 

 Placenta; axilc. Calyx and corolla imbricated. Stamens .li-tinit. . 

 Embryo with little or no albumen. Stamens rarely 00. 



Ti-'iii'iii<li-aceai. Flowen complete, partially symmetrical. Calyx 

 valvate. Anthers 2-4-celled, opening by pores. 



I'olyyalaectc. Flowera complete (irregular) unsyinmetrical. Petals 

 naked. Anthers opening longitudinally. Carpels 3. Seeds winged. 

 (In one cose the ovary is adherent.) 



Vtii-liyacttt. Flowen complete, unsymmctrical, very irregular. 

 Petals naked. Anthers opening longitudinally. Carpels 3. 

 winged. 



*i(i)iltyleaeca;. Flowera complete, unsymmctrical. Petals usually 

 with an appendage orO. Anthers opening longitudinally. Carpels 3. 

 Seeds usually arillate, wingless. 



Sapindacecf. Flowera complete, unsymmctrical. Petals usually 

 with an appendage or 0. Anthen opening longitudinally. Car] 

 Seeds usually arillate, wingless. 



Petiveriacax. Flowera apetalous. Carpels solitary. 



-l"i-ace. Flowera complete, unsymmetrical. 1'utals naked or 0. 

 .\ntli.rsopeuinglongitudinally. Carpels 2. Seeds without an mil. 



M'illiighiace<t. Flowera complete, partially symmetrical. Calyx 

 imbricated. Petals naked, stalked. Ovules hanging l>y cords. 

 Stigmas simple. Embryo usually convolute. 



Knjihroxylacta. Flowera complete, partially symmetrical. Calyx 

 imbricated. Petals with an appendage. Ovules sessile, pendulous. 

 Stigma* capitate. Embryo straight. 



XIII. GUTTIFKRALES. FlowiT* ni'mochlamydcous. Pl:i 

 axile. Calyx imbricated. Corolla imbricated or twisted. Stamens 

 00. Embryo with little or no albumen. Stamens sometimes 

 definite in nuur 



fiipteracca. Leaves xini|.!e, .-dti-m.-ifo, with large convolute stipules. 

 Flowera symmetrical. Petals equilateral. Calyx unequal, J 

 winged. Anthen beaked. Fruit 1-celled ; 1 -seeded. 



