100 CXXXIV. POLYGO^'ACE^. ' [Iiumicc(fi, 



Tribus IV. RurmcE-^i, 



17. RUeum, Linn. Gen. n. 506, Arrwen. Acad. iii. t. 4.— Floras hermaphroditi v. abortu 

 masculi. Perianthium 6-partitum, patens, segmcutis subioqualibus v. extcrioribiis pauUo 

 minoribus, post anthesin iinumtatum, marcescens. Stamina 0, rarius C, filamentis basi 

 V. altms incrassatis ; antherre ovatis. Ovarium 3-goniim ; styli 3, breves, rocurvi, apice 

 stigmatoso valde diUitato hippocrcpico v. crcnato-sublobato. Nnx late v. anguste 3- 

 alata. Embryo rectus, parum excentricus, cotyledonibus pLmis cordatis ovatis v. late 

 oblongis, radicula brevi supera.— Herbse robustaij rliizomate crasso subligiioso. Folia 

 ampla nunc maxima, sinuato-dentata v. palmatim lobata, basi 3-QO-nervia ; ocreie 

 membranaceo-scariosii-', laxfe, marcescentes. Flores pedicellati, fasciculati, ebracteolati, 

 fasciculis racemosis, racemis anguste paniculatis, foliis floralibus seu bracteis sub racemis 

 paniculisve nunc amplis coloratis deciduis nunc parvis. 



Species descriptse 20, plures tamen reduceiidse, Asise Sibiricse HimalaicEe et orientalis iiicolae. 

 Meissn. in DC. Prod. xir. 32. Hayne, Arzneig. xii. t. 6 ad 10. Behhh. Iconogr. Exot. i, 117. Jauh. 

 et SjHich, ni. PI Or. L 470. Lcdch. Ic. Fl, Boss. t. 491. Boyle, 111. Himal. Bot. t. 78, 78a. HooJc. 

 f. lllmtr. Himal PI. i. 19. Bot Mag. t. 3508, 4877, 6135. Sweet, Brit. Fl. Gard. t. 269. 



Flores in B. acnmimito, Bot. Mag. t. 4877, staminibus 6 delineati sunt, in illis taracn a nobis 

 cxaminatis sempr-r more generis 9 invcnimus. In B. iioh'di tamen, Hoolc. f. 111. PI. TTimal. t. 19, 

 flores revera constanter 6-andrus vidimiis. Hsec species habitu insignis est ; planta ineuntc anthesi 

 culumnam elatam couicam refert, foliis floralibus amplis membra naceis coloratis venosis deorsum 

 subimbricatis caulem infloresceutianique velantibus. Punieula; fructifiTSe foliis floralibus emaroidis 

 deciduisve denudantur. 



18. Ozyria, Hilly Veg. Syst. x. 24, t. 24. — Flores hermapliroditi. Periantliii segmenta 

 4, 2 exteriora demiim reflexa, 2 interiora majora erecta appreasa. Stamina 6, filamentis 

 brevibus ; antlier^e oblongje. Ovarium compressum ; styli 2, breves, patentes v. recurvi, 

 in stigmata fimbrlato-penicillata dilatati. Nux compressa, 2-alata. Embryo lateralis, 

 rectus V. leviter incumbenti-inciu-vus, cotyledonibus lineari- oblongis radicula longioribus. 

 — ilerba perennis, humilis v. parum ramosa. Folia radicalia v. rarius iinum etiam sub 

 ramo infimo inflore scent iie longe petiolata, orbiculato-cordata v. reniformia, integcrrima ; 

 ocreie membranaceo-scariosae, lata^ laxaeque. Florum fasciculi ocrea parva stipati, secus 

 ramos racemiformes paniculse angustie dissiti. 



Species 1, in tcrris arcticis subarcticisque liemi.spliserii borealis utriusque orbis et in montibtis 

 elatioriljus Europse et Asise frequens. Meissn. in DC. Prod. xir. 37. Camjid, Monogr. Bum. t. 3. 

 i\Vc5, Gen. Fl. Germ. Monockl. n. 55. Hook. Ic. PL t. 483. 



19. Rumex, Linn. Gen. n. 451. — Flores hermapliroditi v. abortu unisexuales. Peri- 

 antliii segmenta G, rarius 4, per antliesin interdum sequalia, exteriora post anthesin 

 immutata, interiora circa fructum accreta, herbacea v. scariosa rarius rigida, intogra 

 V. margine fimbriato-dentata, costa interdum extus basi in tuberculum granuliformem 

 mcrassata. Stamina C, filamentis brevissimls; antherse oblongse. Ovarium 3-gonum ; 

 styli 3, basi brevissime filiformes patentes v. recurvi, in stigmata varie fimbriata 

 V. penicillato-multifida expansi. Nnx periantliii segmentis interioribus arete inclusa, 

 3-gona, angnlis srepius acutis interdum valde prominentibus. Embryo lateralis, incum- 

 benti-incurvus v. raiius fere rectus, cotyledonibus linearibus v. oblongis. — Herbie 

 iierennes v. rarius annuse v. interdum suflfrutices, rarius fruticea elatiores. Folia nunc 

 pleraquc radicalia, nunc etiam in caule ramisque altema, basi sa'pe cordata v. hastata, 

 Integra dentata v. rarius subpinnatifida ; ocrea; membranaceo -scariosa; ssepe hyalinto, 

 primum vaginantes, mox lacerse v, evanidio. Flores ad nodos fasciculati, fasciculis bractea 

 ocreiformi stipatis, pedicellis articulatis ebracteolatis ; fasciculi nunc axillarcs, nunc in 

 raccmos paniculasve terminalcs dispositi. 



Species fuumcratse ud 130, ab allis aucturibu-s infra 100 tcstjiuatie, pur ixgloiies tenipcratas 

 hemisplia;rii borealis latissime disporsae, inter tropicos tt iu hcmis^phjiTio nustrali pauciort-s et ssepe 



