77 
plant; so also Geum Rossii and Sieversia turbinata, Gentiana 
frigida and G. Romanzovii. On page 532, we find both Argemone 
alba and A. platyceras. "They both stand for A. intermedia, the 
only species found in Nebraska. 4. alba is found in Florida and 
A. platyceras is mainly Mexican. 
That the same plant appears under different names on different 
pages is a rather common occurrence in Harshberger's book. 
Only a few instances may be mentioned, as Alnus incana, on 
page 248, and 4. tenuifolia, on 250; Agropyron divergens, on 561, 
and A. spicatum, on 516, 536, etc.; Aristida purpurea, on 527, 
528, 530, and 532, and A. longiseta, on 537 and 582; Betula 
occidentalis, on 566, B. microphylla, on 570, and (B. fontinalis) 
in the index; Cercocarpus betuloides, on 266, C. betulifolius, on 269 
(= С. parvifolius Nutt.) in the index, all representing C. mon- 
tanus Raf. It is not quite as bad when he uses different generic 
names on different pages, as for instance Neillia opulifolia, on 
page 566, and Physocarpus opulifolius, on 249; Carduus Pitcheri, 
on 399, and Cnicus (Cirsium) Pitcheri, on 499. Echinacea 
angustifolia, on page 522, and E. purpurea, on 524, do not indicate 
in any way that they are congeneric with Brauneria pallida, 
on 518 and 527. A little hunting in the index would probably 
bring to light dozens of similar cases. 
А good phytogeographer should be careful about using synon- 
уту. Harshberger's book shows more than one case of bad 
synonymy. Onlyone such case of Rocky Mountain plants may be 
cited. On page 192 we find Arenaria (Alsinopsis) Rossii R. Br. 
(A. stricta Michx.. The synonym belongs to A. Michauxii, 
as is correctly given in the index. There are also some names in 
the book which as far as I know have never been published, as 
for instance Lewisia brachycarpa Engelm., on page 195, and 
Sieversia grandiflora, on 562. The former is probably a typo- 
graphical error for L. brachycalyx, although Engelmann never 
had it in the genus Lewisia, but in Calandrinia. What Sieversia 
grandiflora stands for, I am at a loss to know. 
A good phytogeographer must be a fairly good geographer. 
It is not so important that he should be well versed in political 
or commercial geography, but he must know the physiography 
