Pellaea ternifolia subsp. ternifolia

(Cavanilles) Link
Treatment appears in FNA Volume 2.

Petiole grooved or flattened adaxially in distal portion; rachis glabrous or with a few widely scattered hairs; pinnae completely glabrous; largest ultimate segments (excluding terminal pinnae) usually less than 18 mm; spores usually 39–45 µm diam. 2n = 58.


Phenology: Sporulating summer–fall.
Habitat: Rocky slopes and ledges on igneous substrates
Elevation: 2200–2600 m

Distribution

V2 465-distribution-map.gif

Tex., Mexico, Central America, South America, Pacific Islands (Hawaii)

Discussion

In the flora, this subspecies is known only from the Chisos Mountains in western Texas.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

Michael D. Windham +
(Cavanilles) Link +
cordate +, truncate +  and rounded +
Pteris ternifolia +
glabrous +  and pubescent +
pinnate-pinnatifid +, linear +  and ovate +
2.5cm;8cm +
Tex. +, Mexico +, Central America +, South America +  and Pacific Islands (Hawaii) +
2200–2600 m +
yellow +  and white +
obcordate;reniform +
Rocky slopes and ledges on igneous substrates +
monomorphic +
clustered;widely scattered +
recurved +  and reflexed +
noncircinate +  and circinate +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
entire +, erose +  and dentate +
dark purple;black +
pubescent +  and glabrous +
flattened +
Sporulating summer–fall. +
perpendicular +
purple +  and black +
with a few widely scattered hairs +  and glabrous +
not decurrent +  and flattened +
persistent +
linear-subulate +
0.1mm +  and 0.3mm +
brown +  and tan +
cristate +  and tetrahedral-globose +
dark colored +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Pellaea ternifolia subsp. ternifolia +
Pellaea ternifolia +
subspecies +
glabrous;sparsely villous +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
crescent--shaped +  and roundish +
branched +  and anastomosing +