KD. SPA.CH. — Sur les Planera. SSg 



lis nempç cxterioiibus demùm in laïuina dccidua dma inegularia soliilis. Pcrula; 

 distich2e,imbricatae, coriacea3 , subscaiiosae. Rami ramulique subteietes, inarti- 

 culati. Folia parva, disticha , coriacca , persistentia , brcvè petiolata , siinplicitei 

 senata, v. crenato dentata , pennivenia, nunc aequilalera , nunc iiiaequilatera 

 basi plus ininnsve obliqua : juniora scabra , puberula ; adulta laevia , glabra ; 

 pelioliis subteics ^ ecaiialiculatus. Stipulas submembranaceae , minulaî, liberae, 

 fugaces. Flores parvi , brève pedicellali , rubelli ; fasciculi 4-7-flori , laxè 

 subcorymbosi , erecli , peliolos vix supe^ntes ; bracteolae (v. simavis, perulae 

 supcvioies) minutae, squamaeforraes. Samarae sicut flores axillares , brève pedi- 

 cellatse, perianlhio staininibusque emarcidis stipatae , illis Z7/;«orw/?i ( prcpter 

 alam loculo angustiorem ) minores. 



M. PARViFOi.iA Nob. — Vlmus parvifolia Jacq. Hort. Schœnbr. III, tab. 262 i 

 — Vlmus chinensis Pers. Ench. — Ulmus pumila ilortul. (non Pallas ). — 

 Planera parvifolia Sweet, Hort. Brit. ( falso pro Caucasi incolâ). — Planerœ 

 (subgcn. Abeliceœ) species, Endl. Gen. p. 276 (in adnot. ). — Habitat in im- 

 peiii Sincnsis regionibus temperatioribus ; colitur sub dio in Galliâ australiori ; 

 in Horto Parisiens! aulem frigoris impatiens. — [Examinavi v. c. ; et i,pecinilna 

 fruciiferaex Hort. Avenion. necnon cl. jiudibert. ) 



Revisio Ulniorwn europœarum et horeali-americanarurn ^ 

 Âuctore Eduardo Spach. 



ULMUS Tourn. — Flores fasciculati v. glomerulati , pedicel- 

 lati , liermaphroditi , latérales (secùs ramiilos prœteriti anni) , 

 foliis piîiGCociores , sub anthesi perulis stipati; pedicelli infrà 

 apicem artictilati. Periaivthium inadhaerens , membranaceum , 

 subscariosum , coloratum , campanulatum turbiiiatumve , per- 

 sistens , 3-ad 9-lobiini (plerumque 4-5- v. 8-lobum), basi angus- 

 tatà, cum pedicello continua; lobis inaeqiialibus v. subseqtiali- 

 biis, aestivatione imbricaîis. Discus nullus. Stamina perianthii 

 lobis isomera illisque anteposita , perianthii fundo inserta , mar- 

 cescentia , aestivatione incurva. Fitamejita libéra , filiformia , 

 sub anthesi recta , exserta , divergentia. Antherœ cordato- 

 urbiculari^s, emarginatœ , didymae , dorso affixœ, versatiles , aesti- 

 vatione introrsa^ ; ibi cis parallelis, juxtapositis, connectivo dor = 



