TAB. CXLIII. 
DAVALLIA BORYAN 4A. 
FILICES.—GxrnaTz. Br.  Poryropiaczm. Kaulf. | Fririczs vers. Willd. 
Gzw. Cuag. DAVALLILA, Sm. Sori subrotundi (vel in lineola verticali) margini plerumque 
approximati. Zmvolucrum superficiarium, ex apice venz unica ortum, lateribus vel lata basi 
adnatum, exterius et verticaliter liberum. Zr. : 
DavaLLiA Boryana; fronde pinnata, pinnis dimidiato-oblongis obtusis basi truncatis, margine 
superiore inciso-crenatis soriferis, caudice longe repente. | 
Davallia Boryana. —Pres(. in Helig. Henk. fasc. 1. p. 66. Spreng. Syst. eset. v. 4. p. 119. 
Dicksonia repens. Bory Foy. v.2. p.323. Swarts. Syn. Fil. p. 138. JF'illd. Sp; Pl. v. 5. p. 482. 
Has. In arboribus Insule Barboniz. Bory. Insula Mauritii. /Veraud, Telfair, IFallich. 
Insulis Philippinis. ZZenke. | 
Caudex in truncis arborum longe repens, crassitie penne passerine, ramosus, valde squamosus, squamis fuscis, 
nitidis, hic illic radicans, radicibus fusco-tomentosis. 
Stpes sub-biuncialis, flavo-fuscus, nitidus, nudus vel subpaleaceus. 
Frons pedalis, circumscriptione lanceolata, longe aítenuata, flexuosa, pinnata, pinnis alternis subuncialibus, pal- 
lide viridibus, tenui-membranaceis, dimidiato-oblongis, obtusis, basi truncatis, margine inferiore integerrimis, 
superiore inciso-crenatis; lobulis soriferis, pallide viridibus, nervosis; nervo primario, seu costa, tenui, late- 
rali, ad marginem inferiorem pinnee, reliquis obliquis, furcatis. 
Sori subrotundi, ad basin lobulorum, marginis superioris pinnarum, venas terminantes. 
Involucrum suborbiculare, tenue, membranaceum, convexum, basi affixum, margine superiore lateribusque liberis. 
Capsule sphsericee, sublonge stipitatee. —Stipites capsulis duplo longiores. 
Semina subglobosa, angulata, pallide fusca, subpellucida. 
Fig.1. Pinna. f 2. Portio sorifere pinnse. f.3. Capsule. f.4. Semina :—magn. auct. 
This very graceful and beautiful Fern has been communicated to us from the Mauritius, both by : 
Mr. Telfair.and Dr. Wallich, where it appears to be not uncommon. . Hzenke discovered it in the 
Philippine Islands, where the fronds attain the height of two feet. We possess from the Herbarium 
of the Horticultural Society what we consider another species, and nearly allied to the present, 
gathered by Mr. Macrae in the crater of the volcano at Owhyhee. This corresponds in size with 
the plant of Hznke; but it is of a far more rigid texture than D. Boryana, and has the upper 
margin of the pinnze much more regularly crenated, each tooth or lobule soriferous, so that the 
fructification forms a regular line or chain along the upper edge. 
The fructification will be found to be considerably different from that of the other well-known 
Davallie, coming near to that of Lindsea, with which genus this plant agrees in habit. 
