BARTLETT. — AMERICAN SPECIES OF LITSEA. 597 



III. A SYNOPSIS OF THE AMERICAN SPECIES OF LITSEA. 



By Harley Harris Bartlett. 



The following synopsis of the American species of Litsea includes the 

 six species recognized by Mez 1 in 1889, together with five heretofore 

 undescribed species from Mexico and Central America. No attempt 

 has been made to cite full synonymy, nor, with one exception, to re- 

 describe species recognized by Mez, hence this paper may be considered 

 as supplementary to his treatment of the genus. 



For the loan of valuable Central American material, without which 

 the new species from Costa Rica must have remained undescribed, I am 

 indebted to Captain John Donnell Smith. Except for the specimens 

 from his herbarium, the exsiccatae cited are all at the Gray Herbarium. 



Folia decidua 1. L. geniculata. 



Folia persistentia. 



Inflorescentiae plerumque corymbosae, rarius paniculatae. 

 Folia subtus glabra. 



Folia basi rotundata vel subcordata. 



Pedicelli quam flores multo longiores; inflorescentiae fere omnes in 



paniculam terminalem dispositae 2. L. pedicellata. 



Pedicelli quam flores breviores; inflorescentiae non modo terminates 

 sed etiam in axillis foliorum mediis corymbosae. 3. L. Pringlei. 



Folia basi acuta 4. L. glaucescens. 



Folia subtus pubescentia. 



Folia subtus plus minusve strigosa 5. L. guatemalensis. 



Folia subtus ochraceo-tomentosa 6. L. Neesiana. 



Inflorescentiae solitariae vel fasciculatae. 

 Folia basi acuta. 



Folia subtus albescentia, molliter tomentosa. ... 7. L. Orizabae. 

 Folia glabra. 



Folia plus quam 2 cm. lata. 



Folia subtus glauca (4) L. glaucescens var. subsolitaria. 



Folia haud glauca 8. L. flavescens. 



Folia maxima 1.5 cm. lata 9. L. Schaffneri. 



Folia basi subcordata vel rotundata. 



Folia orbiculari-ovata, apice obtusa 10. L. parvifolia. 



Folia ova to-lanceolata, apice acuta 11. L. novoleontis. 



1 Carl Mez, Lauraceae Americanae monographice descriptae. Jahrbuch 

 des koniglichen botanischen Gartens und des botanischen Museums zu 

 Berlin. Band V, 1889. 



