A CONSIDERATION OF CERTAIN GENERA 



205 



T. lanceolatum (Fernald) 



T. maculosum (Vahl) 



T. monticolum (Fernald) 



T. muiatiitn (L.) 



T. nodulosum (Roth) 



T. ochreatum (Nees) 



T. 'obtusum (Willd.) 



T. oblivaccum (Torr.) 

 T. ovatum (Roth) 

 T. palustre (L.) 

 Var. calvum (Torr.) 

 Var. glaucescens (Willd. 

 Var. vigens (Bailey) 

 T. praticolmn (Britten) 

 T. proliferum (Torr.) 

 T. Ravenelii (Britton) 

 T. Rohhinsii (Oakes) 

 T. rostellatidm (Torr.) 

 T. simplex (EH.) 



T. Torreyanum (Boeckl.) 



T. tuberculosum (Michx.) 



T. tricosfatum (Torr.) 



T. thermale (Rhydb.) 



T. viviparum (Kunth) 



E. lanceolata Fernald 



E. maculosa (Vahl) R. Br. 



E. monticola Fernald 



E. mutata (L.) R. & S. 



E. nodulosa (Roth) Schultes 



E. ochreata (Nees) Steud. 



Scirpus capitatus Walt., Not L., 

 Scirpus obtusus Willd., Eleo- 

 charis obiusa Schultes. 



E. olivacea Torr. 



E. ovata (Roth) R. & S. 



E. palustris (L.) R. & S. 



E. praticola Britton 



E. prolifera Torr. 



E. Ravenelii Britton 



E. Robbinsii Oakes 



E. Rostellata Torr. 



Scirpus simplex Elk, Eleocharis 

 simplex A. Dietr. Eleocharis 

 tortilis (Link) Schultes. 



E. Torreyana Boeckl. 



E. tuberculosa (Michx.) R. & S. 



E. tricostaia Torr. 



E. thermalis Rydb. 



E. vivipara Kunth. 



44. — Hypopitys Ehrh., 1. c. 



The type is designated as Monotropa hypopitys L. As a generic 

 group this had already been recognized by Adanson in 1763. 



45. — Chamaemorus Ehrh., 1. c. ♦ 



The type is designated as Rubus chamaemorus L. Some attempts 

 have been made to segregate the genus Rubus, which contains, as 

 is generally known, a number of distinct groups of species. Greene 

 (Leaflets i: 245. 1906) adopts the genus from Clusius, and it is 

 apparently as worthy of recognition as a segregate of Rubus, as is 

 Rubacer. (Bossekia Neck.) or Oreob^tus Rydb, 



