E. SPACH. — Re^isio Tiliarum. 34 1 



foliorum surculorum sterilium lamina saepe pedem fere loaga ) , subcoriacea^supra 

 obscure viridis,nonnuaquam sublucida, subtus pallide virens, ad venarum axillas 

 pilis brevissimis fuscescentibus barbulata, basi hinc i-v. a-nervia, illinc 2-V.3- 

 uervia; yenae tenuiter reticulatae; serralurae triangulares v. rotundafœ, approxi- 

 mata;, aequales, vel inaequales , mucrone brevi subcartilagineo albido incurvo 

 acuminatae; petiolus io-341ineaslougus. Stipulai ovatse v. lanceolatae, acumiuatae, 

 brèves. Bracteae i 1/2-6 poUices longae, 5-io lineas latae, subsessiles vel a pe- 

 dunculi basi distantes, liguliformes , v. lanceokta&j v. lanceolato-oblongae, 

 obtusae. v. acutae, nunc pedicellis superatae, nunc illos superantes, foliis 1»jd- 

 giores vel breviores; pedunculus saepe ad médium usque adnatus; pedicelli 

 divaricati, supra basin vel medio quasi articulati, superne incrassati , calyce 

 2-3-plo longiores. Sepala ovato-oblonga-lanceolatave, acutiuscula , badia , 3 li- 

 neas longa. Petala pallide lutea, 4 lineas longa, superne i 1/2 lineam lata. 

 Slaminodia calicis longitudine, 172-1 lineam lata, lineari-vel oblongo-spathu- 

 lata, apice emarginata v. obsolète crenulata. Stamina 60-75. Ovarium inca- 

 num s. velutinum. Stylus sub authesi pelalis brevior, deraum plus minusve 

 exsertus, 3-3 172 lineas longus. Nux pisi majoris yolumine, saepe obliqua, yelu- 

 tina, v. incana. Semen obovatum, nigro-fuscum. 



Habitat in America septentrional! , a Georgia usque iîi Canadam, in borea- 

 lioribus vulgatior. Circa Parisios floret plerumque exeunte junio, Tiliœ molli 

 serius, T. albœj truncatce ac laxiflorœ ^vîècozïns. (V. v. c. et s. sp.) 



b) Folia subtus puberula. 



TiLIA NEGLECTA Nob. 



T. foliis serratis , cuspidato-aciimiiiatis , subtus niolliter pu- 

 bescentibus : inferioribus cordatis, v. cordato-ovatis, subrotun- 

 disve; superioribus e basi hinc dimidiato - cordata v. rotun- 

 dala, illinc oblique truncata, vel utrinque truncata ovatis v. 

 ovato-ellipticis, petiolo dimidio — duplo longioribus; cymis laxe 

 5-i2-floris; petalis oblongis v. spathulato-oblongis,obtusis, apice 

 obsolète crenulatis ; stylo post anthesin exserto; nuce subglo- 

 bosa, V. obovata, v. ovata, v. tuibinata, umbonata, subpenta- 

 gona : costis prominulis. 



Arbor habitu Tiliœ nigrœ. Ramuli annotini purpuraseentes, Gemmae acuta& 

 v. obtusiusculae, ovatae, lucidae. Folia bracteaeque illis Tiliœ nigrœ quoadformam 

 prorsus similia. Foliorum superiorum petioli i8-3o lineas longi. Sepala ovato- 

 lanceolala, obtusiuscula , 3 lineas longa, Petala pallide lutea, 4 lineas longa ^ 

 imeam circiter lata. Slaminodia longitudine calycis , superne 172 bncam lata^. 



