familyPteridaceae
genusPentagramma
speciesPentagramma triangularis
subspeciesPentagramma triangularis subsp. viscosa
Pentagramma triangularis subsp. viscosa
Amer. Fern J. 80: 15. 1990.
Basionym: Gymnogramma viscosa (Kaulfuss) Maxon Ferns N. Amer. 2: 16. 1879
Synonyms: Pityrogramma triangularis var. viscosa (Nuttall ex D. C. Eaton) Weatherby Pityrogramma viscosa
Treatment appears in FNA Volume 2.
Petiole sometimes viscid-glandular. Blades thick and leathery, abaxially densely white-farinose and viscid-glandular, adaxially viscid-glandular. Distal pinnae mostly entire. Proximal basiscopic lobes of basal pinnae entire to undulate or crenate. 2n = 60.
Habitat: Chaparral, pine and oak woodlands
Elevation: 50–500 m
Distribution
Largely coastal, Calif., Mexico in Baja California
Discussion
Pentagramma triangularis subsp. viscosa was said to introgress with P. triangularis subsp. triangularis by K. S. Alt and V. Grant (1960), who noted both diploid and tetraploid plants of intermediate morphology at some sites where these two occur together.
Selected References
None.
Lower Taxa
None.
"thick" is not a number.
... more about "Pentagramma triangularis subsp. viscosa"
interrupted +
vertical +
3-celled +
viscid-glandular +
1-6-pinnate +
herbaceous +
absent +
white-farinose +
leathery +
full +
prominent +
prominent +
lacking +
absent +
viscid +
not striate +
dull +
asymmetric +
green +
aboveground +
glabrous +
obcordate;reniform +
commonly +
monomorphic +
clustered +
dimorphic +
revolute +
not recurved +
complex +
viscid-glandular +
chestnut-brown;dark-brown +
shiny +
basiscopic +
Amer. Fern J. +
1990 +
straight +
elevated +
2;3 +
bicolored with black +
persistent +
hard +
confluent +
Illustrated +
trilete +
terrestrial +
small +
branched +
creeping +
continuous +
Pentagramma triangularis subsp. viscosa +
Pentagramma triangularis +
subspecies +
fused +
adnate +
single +
branched +
pinnate +
divergent +
free +
obscure +
forked +
perennial +