43 



of the family from the well known manual range. Seventeen of 

 these are not discussed by Pennell, of which eleven are northern 

 and extra-limital, four are introduced and apparently not re- 

 garded as established in our flora, and Paulownia tomentosa is 

 excluded from the family. Only one remains unaccounted for, 

 Penstemon acuminatus Dougl., a name not appearing in Pen- 

 nell's index. Matching the names in Gray against those in the 

 monograph is not always easy, since the author makes no 

 attempt to include all synonyms and unfortunately neglects a 

 few which are in current usage. 



The monograph indicates 131 species or subspecies typica 

 and 30 subspecies or varieties in the manual range, which for 

 convenience has been terminated in the west at the Missouri 

 River. This is a net increase of 55, of which seven represent 

 extensions of range, twelve new introductions, one a redis- 

 covery, while the remainder are due to new concepts in the 

 separation of species and varieties. The whole monograph dis- 

 cusses 265 species and minor forms. 



In the treatment of genera Pennell departs farther from the 

 usage of current manuals. Instead of the twenty-eight genera 

 {Paulownia excluded) of the Manual Range as presented in 

 Gray, we find forty. The following eighteen genera of Gray are 

 unchanged in both name and circumscription: Verbascum, 

 Antirrhmiim, Collinsia, Scrophularia, Penstemon, Chelone, 

 Mimulus, Limosella, Digitalis, Buchnera, Castilleja, Orthocarpus, 

 Melampyrum, Euphrasia, Odontites, Pedicularis, Rhinanthus, 

 Schwalbea. 



One genus is a new arrival in the region : Mazus. 



Five genera have had changes of name: Conobea multijida 

 (Michx.) Benth. does not belong to the tropical genus Conobea 

 Aubl. It becomes Leucospora multifida (Michx.) Nutt. Ilysanthes 

 Raf. becomes Lindernia All. "By the union of the four-anthered 

 Lindernia All. and Vandellia L. with the two-anthered Ilysan- 

 thes Raf. and Bonnaya Link & Otto is formed a large and 

 clearly natural genus." Micranthemiim micranthemoides (Nutt.) 

 Wetts. becomes Ilemianthus micranthemoides Nutt. "The fea- 

 tures of calyx, corolla and styles*** warrant generic status" 

 (apart from Micranthemum). Synthyris Bullii (Eaton) Heller 

 becomes Besseya Bullii (Eaton) Rydb., in accordance with the 

 segregation made by Rydberg. Seymeria macrophylla is generi- 



