Pellaea ternifolia subsp. arizonica
Contr. Univ. Michigan Herb. 19: 42. 1993.
Treatment appears in FNA Volume 2.
Petiole rounded or slightly flattened adaxially in distal portion; rachis glabrous or with a few widely scattered hairs; pinnae completely glabrous; largest ultimate segments (excluding terminal pinnae) usually more than 18 mm; spores averaging 46–53 µm diam. 2n = 116.
Phenology: Sporulating summer–fall.
Habitat: Cliffs and rocky slopes, on a variety of acidic substrates including quartzite and granite
Elevation: 1700–2400 m
Distribution
Ariz., Tex., n Mexico
Discussion
Pellaea ternifolia subsp. arizonica and P. wrightiana hybridize; the hybrids are morphologically intermediate tetraploids and have malformed spores.
Selected References
None.
Lower Taxa
None.
"thick" is not a number.
... more about "Pellaea ternifolia subsp. arizonica"
interrupted +
vertical +
3-celled +
mucronate +
prominent +
1-4-pinnate +
not striate +
herbaceous +
absent +
dull +
leathery +
whitish +
black +
lighter +
absent +
villous +
prominent +
lacking +
marginal +
asymmetric +
green +
aboveground +
glabrous +
obcordate;reniform +
longitudinal +
single +
scattered +
few +
commonly +
monomorphic +
clustered;widely scattered +
clustered +
dimorphic +
revolute +
erose-dentate +
brown +
recurved +
thin +
complex +
dark purple;black +
lustrous +
ternate +
perpendicular +
glabrous +
Contr. Univ. Michigan Herb. +
1993 +
straight +
ascending +
elevated +
2;3 +
scattered +
bicolored +
persistent +
few +
linear-subulate +
confluent +
reflexed +
defined +
fertile +
confluent +
long-stalked +
concealing +
trilete +
dark colored +
lustrous +
terrestrial +
small +
branched +
stout +
creeping +
ascending +
continuous +
Pellaea ternifolia subsp. arizonica +
Pellaea ternifolia +
subspecies +
glabrous;sparsely villous +
leathery +
single +
pinnate +
divergent +
free +
obscure +
forked +
perennial +