Cmvolmdem.] CXIII. CONVOLVULAOE^. 877 



bus peduucull axillarcs l-^S-flori- Bractero parv^e. Scpala exteriora de specie in spcciem 

 variant, ii\mc interioribus vix latiora, nunc subduplo v, interdum pluriea majora. Corolla; 

 Gonvolvidiy alboe roseaj v. flavse, 



Species ad 20, per regiones calidiorcs utriusque orbis late dispersae, etiam in America boroali ot 

 in Australia obviae. Chois, in DC. Prod. iz. 43S» Walp.licp.yu 542; Ann. iii, 115. Bcnth, 

 n. Austral iv- 435. Mcissn. in Mart. Fl. Bras, vii. 323, 325, i. 116, 117- Wight, Ic. t 1370. 

 Klotzsch in Peters. Mossanib, Hot, t. 39 (nonnitUa& sxib Prevostea). 



Genus, uti plura inter ConvolvidaceaSy iiabitu poly niorpli urn, sctl genera nonnulla ab auctorilms 

 segrcgata charactere nullo certo limitanda, Styli a basi soluti y. plus minus coiinati interdum 

 variant in eadem specie, et sepalorum proportio hie non magis valoris videtur quam in aliia goneri- 

 bus. Genus totum ab A, Graylo ad Bonamiam reducitnr, sed corolla? lubi semper sinubus indiipli- 

 catis connexi videnturj et habitus etsi variabilis ab vx> lionamicB diversus, Hpccies typicae Aiis- 

 tralianas sunt herbse pcrcnnrs suffruticeK v, fniticidi prostrati v, subvolubiles, rarius erecli ot 

 divaricato-raniosi, floribus parvulis ad axillay solitariis rarius 2-3-nis, sepalis ^equalibus v, valdo 

 inasqualibus. 



Seddera, Hbchst. in Flora, 1844, Beihl, 7, /■ 5, a Brcweriis Australianis non diffcrt nisi 

 babhu rigido fruticuloso divaricato-ramoso, Sepala subnequalia. Species continct paucas Arabicas 

 etlndicas. Chois. in DC\ Prod. ix. 440. Jaub. et Spach, 111 PI Or. t, 371, 372. Wight, Ic. t, 

 ] 369- 



iSxYi-TSMA, Nutt, ex Cliois. in DC. Prod. ix. 450 (Bonamia, A. Gray, Man. Bot. N. U. States, ed, 

 5, 376), species continct 3 boreali-Americanas, perenncs, caulibus tenuibus prostrutis v. volubili- 

 bxis, pednnculis graoilibiis 1-3-floris, floribus parvis sepalis Bubjequalibus. 



DcFOuitiiA, H. B. ct K. Nov. Gen. et Sp. iii, 113, t. 214 (CALTcoBt>Lus, WUld. in licem, et Sch, 

 Syst. Y. % Eeinwardtia, Spreng. Syst, i, 527- Prevostea, Chois. in Ann. Nat, Hist, sir. 1, iv, 497 

 et in DC, Prod. ix. 437), species tropicas continet ssepius alto scandentes cymis co-floria, et ab auc- 

 toribus distinguitur sepalis esterioribus valde auctis, B^iiiln Prcvosica ferruginea, Chois., ]\Xcissn, L c, 

 t. 116, f. 1, uti in specie Brasiliana inedita, sepala minus insequalia sunt quam in B. pannosa, Br., 

 et in aliis speciebus proportio valde dircrsa. In specie typica Kunthiana sepala fruotifera ex- 

 teriora orbiculato-cordata, reticulata, poUicem diametro attingunt. Species plerteque Americanae 

 sunt, illis tamen associandas B. Boxfmrgkli, ex India orifntali, et B. MenziesiU A. Gr,, ex ins. Sand- 

 wicensibus. Inter Americanas, B. BurchelUi, Chois,, insignis est capsnia conica coriaeea, sominibus 

 loDge setosis. 



Trichaxtha, Karst. et Tri. in Bimitsa, ssTiii. 437, species Columbiana a nobis non visa, est ex 

 charactere dato Brewerhs species sepalis subsequalibus. ^ 



CoDONA>THus, G. Don, Gen. Syst. iv. 16G, Walp, Ann, i, 521, Pla7tch. irt Hook. Ic. PI t. 796 

 {Prevostea afrwana, Benth. in Hook. FL Nigr. 469), species Africana, fruticosa, glabra, floribus ad 

 asillas subsessilibus, insignis est corolla majuscula urccolata, ad faucem contracta, et facile pro gencre 

 proprio habenda sed species altera adest ex Africa tropica halitu et inflorescentia similis, corolla 

 late eampamilata. 



Breweria malvacea, Kb in Peters, ilossamb, Bot, 245, t. 37, est Convolvuli specieSj btlgmatibus 

 linearibue. 



20. Bonamia, Tlion. Hi^t Veg. Isl. Afr. 17 (33), t. %. — Sepala subsequalia, obtusa. 

 Corolla campanulata (in icone infundibularis) ; limbiia 5-fidus, lobia induplicato-valvafis 

 usque ad marginem extua villosis. Stamina medio tube affixa, exserta, filamentis filiformi- 

 bus basi pilosis ; antlierce oblongfe. Discus obscurus. Ovarium 2-Iociilare, 4-ovulatum ; 

 stylus filiforrais, ultra medium 2'fiduSj stigmatibus terminalibus 3ub-2-lobis. Capsula abortu 

 1-2-sperma. Semina recta, liilolato aflixa, ovato-acuminata, testa coriacea, arillo baccato ; 

 albumen ; embryo replicatus, cotyledonibus fuliaceis involutisj radicula infera. — Frutex 

 orgyaliSj inflorescentia pubescent!- viilosa. Folia altema, demum glabrata, ovata, acumi- 

 nata undulata, coriacea, nitida, oblique et crebre pennivenia. Cymte in axillis supremifl 

 confertse, in paiiiculam tcrminalem dispositaa. 



Species 1, Madagascariensifl, Chois. in DC. Prod, is- 439. Florcs in specimine nostro nondum 

 aperti, et in alabastris 2 examinatis stylus imperfectus erat. Characteres igitur pistilli et fructus 

 e descriptione Thooarfrii non semper cum icone couveuiento sumpsinius. Genus a Breweria bene 

 distinctum videtun 



