TILIA. 
TILIACEAE. 
359 
cymis 7~30-floris; pelalis oblong. v. lanceolalo-oblong., apice rolundalis v. trun- 
cal. subcrenulatis; slylo post anihesin exserlo; nuce subglobosa v. obovala v. 
ovata, umbonata v. acuminata, subpentagona; costis prominulis. — Guimp. et 
Hayne IIIzplz. t. 45. — T. Americana Ait. — Wats. Dendrol. Brit. t. 45. 
«. densiflora Spach I. c. — Cymis dense muItiO.; nucib. plerumq. obovatis um- 
bonatis subvelutinis. 
/5. laxiflora Spach I. c. — Cymis 7-12-floris laxis; nucib. plerumq. oblongo- 
obovat. acuminat. ; ramiilis annotinis saepe purpurascentib. — T. Mississip- 
pensis Bosc. in Nouv. Cours d'agric. — T. laxiflora Willd. nec Michx. 
h. Folia suhtus puberula. 
0. T. NEGLECTA E. Spach I. c. 341. f — Foll. serrat. cuspidato-acuminalis, sub- 
tus molliter pubescentib., inferiorib. cordat. v. cordato-ovat. subrotundisve, su~ 
periorib. e basi hinc dimidiato-cordata v. rotundata, illinc oblique truncata, v. 
utrinq. truncata ovalis v. ovato-ellipticis, petiolo duplo v. dimidio longiorib.; cy- 
mis laxe 5-12-noris; petalis oblongis v. spathulato-oblong., obtusis, apice obso- 
lele crenulatis; stylo post anthesin exserto; nuce subglobosa v. obovata v. ovata 
V. turbinata, umbonata subpentagona ; costis prominulis. — Habital verosimiliter 
in America septenlrionali. 
B. Gemmae parvae; petiolis ramulisque junioribus tomentosis v. pu- 
bescentibus. Foliorum pagina inferior pilis stellatis tomentosa v. 
pubescens. Filamenta staminodiis subduplo breviora. 
a. Foliorum omnium lamina petiolo duplo — quintuplo longior. Stylus glaher. 
6. T. TBUNCATA Spach 1. c. 342. f — FoII. ovatis v. ovato-elliptic. v. triangulari- 
ovat. V. dimidiato- cordatis , profunde serrat. , breviter acuminat. , basi plerumq. 
oblique Iruncat., subtus incano -puberulis ; cymis dense- multifloris; petalis ob- 
longis obtusis, apice obsolete crenulatis; staminodiis obovato -spathulatis; stylo 
brevi, demum vix exserto; nuce velutina subglobosa; costis evanidis. — T. pu- 
bescens var. Vent. — Crescit in Carolina et in Georgia. 
7. T. LAXIFLORA Michx. FI. Am. bor. — Spach I. c. 343. f — FoII. serrat. v. eroso- 
denticulalis, breviler acuminat., subtus puberulis, inferiorib. cordatis v. cordato- 
subrotundis subaequilateris, superiorib. e basi oblique truncata v. dimidiato- 
cordata v. cuneiformi v. rotundata ovatis v. ovato-ellipticis; cymis laxe mullifl.; 
petalis lineari-oblongis, profunde emarginat.; staminodiis lineari-spalhulat. ; stylo 
demum longe exserto; nuce ovata v. subglobosa, umbonata incana; costis evani- 
dis. — T. pubescens Ait. — Duham. ed. nov. I. t. 51. — Wals. Dendrol. Brit. 
1. 135. — T. pubescens J3. leptophyllaYent. — Crescit in Georgia et in Carolina. 
8. T. ABGENTEA Dsf. Cat. Hort. Paris. — Spach I. c. 344. f — FoII. argute serrat., 
breviter cuspidato-acuminat. , subtus albido-tomentosis, in axillis venarum im- 
berbib., inferiorib. cordat. v. cordato-subrotundis, superiorib. e basi hinc rotun- 
dalo-truncata, illinc dimidiato-cordata ovatis v. ovato-subrotundis; cymis dense 
7-15-floris; petalis oblong. v. cuneato-oblong. apice crenulatis; staminodifs spa- 
Ihulato-obovatis; stylo exserto; nuce ovata v. subglobosa umbonala velutina pen- 
tagona; costis plus minusve prominulis. — T. alba W. et K. PI. rar. Hung. I. 
l, 3. — T. rotundifolia Vent. Diss. t. 4. — Duham. ed. nov. t. 52. — T. tomentosa 
Mnch. — /?. virescens Spach I. c. — Foll. subtus virescentib. fere glabris; nucib. 
ellipsoideis acuminatis. — An hybrida? — Crescit in Hungaria, Transsylvania, 
Esclavonia ac Croatia. 
b. Foliorum superiorum petiolus laminae subaequilongus. Stylus basi barhatus. 
9. T. HETEROPHYLLA Vent. Diss. t. 5. — E. Spach 1. c. 345. f — FoII. argute 
serrat., breviler cuspidato- acuminat., subtus albido-tomentosis in axillisq. ve- 
narum ferrugineo-barbatis, inferiorib. cordat. v. cordato-subrotundis, superiorib 
6 basi hinc rotundata v. truncata illincq. dimidiato-cordata v. utrinq. truncata 
ovatis V. ovato-subrotundis; cymis dense 7-15-floris; petalis oblongis v. cunealo- 
oblongis, apice subcrenulatis; staminodiis spathulato-obovat. ; stylo parum ex- 
