22 BULLETIX 622^ U. S. DEPARTMEXT OF AGRICULTURE. 
31. Hordevm deficiens .subla-riou Kornicke (1908, p. 433). 
Outer glumes narrow. 
Kernels white. 
Spike narrow, lax. nodding typica. 
32. Hordeum deficiens gymnospermum Kornicke (1895. p. 11). 
Outer glumes narrow. 
Spike narrow, lax, nodding fypica. 
REJECTED SPECIES, SUBSPECIES, AND VARIETIES. 
In the analysis of the relative value of the variable characters of 
barley, a number of variations were regarded as of too minor a nature 
to be used even in the description of named subvarieties. These in- 
cluded the elevation of the hood on a short awn. awns produced 
on the hood itself, malformed awns, short awns, the nature of the 
hairs on the rachilla. the toothms of the nerves of the lemma, and the 
widening of only the two outermost glumes at a node. Varieties 
established upon these characters are not recognized in the key. Inas- 
much as the names often appear in papers on barley, a statement of 
the nature of the variation is necessary for reference use. For this 
reason an alphabetical list of discarded species and varieties has been 
prepared. A few groups founded on other bases have been included. 
The most important of these is probably that of compound spikes. 
The inclusion of compound spikes as a recognized character would 
simply double the number of varieties. In barley, proliferation of 
spikes is common, but in most strains it is not inherited. In others, 
while the tendency is transmitted, it is inherited imperfectly. Even 
if it were perfectly heritable its use would offer little of advantage. 
The list also contains various synonyms which have been published 
from time to time. In a few instances names occur both in the key 
and in the list of rejected forms. In these cases the names have 
been used in two or more ways and in the misapplied use appear 
here. TMiere the form is compared with one in the key. it bears the 
key number of the recognized variety. 
ALPHABETICAL LIST OF EEJECTED SPECIES. SUBSPECIES. AXD VARIETIES. 
ahys-sinicum Seringe (1842. p. 194. as. var.), as originally describetl equal to 
the species deficiens. 
aegiceras Royle (1839, p. 418), synonym for H. t: trif uveal uni (7). 
aethiopicum Alefeld (1866. p. 343). synonym for ^. distielion nigricans (IS). 
njljidum Kornicke (1873. p. 4). synonym for H. r. pallidum (1). 
angustissijnum Kornicke (1908. p. 432. as var.). synonym for H. distielion 
laxum (23). 
atratum K. H. in Beaven (1902. p. 597. as var.). synonym f(jr H. deficiens 
steudelii (26). 
Gtterbergianum Kegel (1908. p. 77. as var.). .synonym for H. deficiens steudelii 
snbr/lalirum (26). 
