299 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
sone . ; . Wh 
mon VO. virginiana ranges from Noya Scotia to eastern Texas. It has 
also been reported from South Mexico and Central America, but I 
have long been convinced that such a reference of the material from 
those regions is not correct. Mr. E. W. Nelson recently collected 
additional specimens from the State of Guerrero, which has enabled 
me to reexamine the Mexican material, and I now have no hesitancy 
in proposing it as a new species. In addition to this, Mr. Vernon 
Bailey has collected in the mountain gulches of western Texas a 
very peculiar species quite distinct from both GO. Avew/tons and 
O. wirginiand. 
About the time I was submitting my manuscript for publication 
Herbert Winkler’s handsome monograph of the Betulaceae appeared.¢ 
In this he recognizes only two species, O. (fa/‘cu and O. hnoiltons, 
He reduces our common O, eérg/icana to asubspecies of the European 
species (. /fa/ica, and publishes as a new variety our Mexican and 
Central American forms. This treatment of evryeacane 1 do not 
believe will be acceptable to American botanists. The Central Mexi- 
van form IT had already taken up as a good species, naming it 
OY, mexicana, Wile the Guatemalan material T had excluded) from 
9 
both airgéniane and mecicund. Tam still of this opinion, but must 
of course use Winkler’s varietal name, though raising It to specitic 
rank, 
Ostrya guatemalensis (Winkler) Rose. 
Ostrya italica quatemalensis Winkler in Engler, Pflanzenreich 19: 22. 1904, in part. 
I quite agree with Winkler that the Guatemalan material deserves a name, but I 
am convinced that it has nothing to do with O. talica and little with O. rirginiana, 
to which it has usually been referred. It comes nearest to what [ here deseribe as 
O. mevicana, but differs in having somewhat broader leaves, not so strongly nerved, 
and with denser, softer, more persistent pubescence. The bracts of the male catkins 
seem to be more pointed, ete. 
The species has been reported several times from: Guatemala and may be found in 
southern Mexico, but does not seem to go beyond the Isthmus of Tehuantepec. 
Ostrya mexicana Rose, sp. nov. 
A small tree, 12 to 15 meters high; bark of twigs one and two years old of a dull 
dark grayish brown color; twigs of the current season greenish brown and some- 
what pubescent and bearing prominent brown lenticels, not at all glandular; petioles 
5 to 10mm. long; blade narrowly lanceolate, 5 to 10 cm. long by 2.5 to 4 em. broad, 
sharply and somewhat doubly serrate, slightly cordate at base, acuminate but not 
abruptly so, with soft, rather scanty pubescence on both surfaces, beneath pale, dull, 
und strongly reticulated; fruiting spikes 4 to 6 cm. long. 
Collected by I. W. Nelson at Omilteme, Guerrero, May 25, 1903 (10. 7050}. 
To this species also belong Botteri’s Orizaba specimen (no, 284) and Pringle’s 
no, $188 from Jalapa, both of which have been referred to O. rirgintana, 
The only two Mexican localities given by Hemsley in the Biologia for Ostrya rir- 
ginina were Orizaba and Jalapa, from both of which I have seen specimens. This 
species is much more like O. rirginiana than either O. knowltont or O. bailey, and Dr. 
Sargent’s suggestion in the Svlva of North America that the Mexican and Central 
“ Engler, Das Pflanzenreich, Heft 19, 1904, 
