168 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
10. Odontosoria guatemalensis Christ, Bull. Soc. Bot. Genéve II. 1: 229. 1909. 
Typr LocaLiry: Cuesta Grande, Hacienda de las Nubes, Guatemala (Bernoulli & 
Cario 402). 
Disrripution: Apparently confined to western Guatemala, ascending to 1,800 
meters. 
This species, of which a few words of description were published by Doctor Christ 
in 1909, is one of marked peculiarity. Superficially it resembles the Jamaican O. 
fumarioides, but it is devoid of spines throughout and the ultimate divisions are 
smaller, shorter, and less divaricate. The nearly terete, highly polished, unarmed, 
castaneous rachises also are characteristic. 
The following specimens are in the U. S. National Herbarium: 
GUATEMALA: Pireneos, above San Felipe, alt. 1,200 to 1,500 meters, Mazon & 
Hay 3567. Santa Maria (lower slopes of the Volcan de Agua), alt. 1,500 to 
1,800 meters, Kellerman 5586. 
DOUBTFUL SPECIES. 
1. Prosorria pirrnnata Presl, Tent. Pter. 116. pl. 6. f. 19. 1836 (name only). 
Beyond the poor figure and the statement of the West Indies as type locality, there 
is apparently no means of identifying this species, which technically must be regarded 
as unpublished. It is referred doubtfully to wncinella by Mettenius, and to the same 
species by Christensen without reservation. The original specimen may be in Presl’s 
herbarium at Prague. 
2. ODONTOSORIA SCANDENS (Desv.) C. Chr. Ind. Fil. 354. 1905. 
Humata scandens Desv. Mém. Soc. Linn. Paris 6: 324, 1827. 
Davallia scandens Moore, Ind. Fil. 299. 1861, not Swartz, 1801. 
Lindsayopsis scandens Kuhn, Gruppe Chaetop. 27. 1882. 
The original description is as follows: 
Frondibus scandentibus, tripinnatis, subaculeatis; pinnis oppositis distantibus; 
pinnulis infimis 2-4-pinnatis extimis cuneato-rhomboideis, lobatisque; pinnellis 
subdecurrentibus, basi cuneatis, apice oblique bilobis; soris in margine incrassato 
a Crescit in fruticetis peruvianis. Rachis funiculosa glabra, subquadrangu- 
aris, 
There is at hand no material of this species, which appears to be known only from 
Peru. It wasapparently studied by Kuhn, since it is one of the three species listed by 
him under Lindsayopsis, in his paper upon this group. By Christensen it is regarded 
as possibly identical with O. wncinella, although the description points to a plant very 
different from that species. 
8. DAavALLIA mitis Kunze, Bot. Zeit. 8: 214. 1850. 
This, which is one of the species described by Kunze in his critical comments upon 
Hooker’s treatment of the group in the first volume of the Species Filicum, is listed 
by Christensen (under Davallia) as an unidentified or doubtful member of Odonto- 
soria. The type is a Guiana specimen collected by Poiteau and presented to Kunze 
by Bory. 
NOTES UPON BOMMERIA AND RELATED GENERA. 
: BOMMERIA. 
Among the many interesting ferns collected in eastern Mexico by 
Dr. C. A. Purpus within recent years is the following species, hitherto 
undescribed. Superficially it bears a certain resemblance to Bommeria 
hispida (Gymnogramme hispida Mett.) but differs somewhat in leaf 
form and very conspicuously in its areolate venation, B. hispida 
being free-veined throughout. 
