Pteris cretica var. albolineata

Hooker

Bot. Mag. plate 5194. 1860.

Common names: White-lined cretan brake
Introduced
Treatment appears in FNA Volume 2.

Pinnae with white or pale green, longitudinal streak along middle; sterile pinnae to ca. 25 mm wide, fertile pinnae to ca. 15 mm wide; terminal pinna usually not decurrent on rachis.


Habitat: Terrestrial or on rock on wooded slopes or shaded limestone ledges and sink margins in circumneutral soil

Distribution

V2 316-distribution-map.gif

Introduced; Fla., natural range uncertain (see discussion of species)

Discussion

Two taxa are considered doubtful species and are therefore excluded. Pteris ensiformis Burman f. cv. victoriae Baker was reported for peninsular Florida by E. T. Wherry (1964), and as far as I can determine, this is the only report of the species for the flora. The source for the record is uncertain. Pteris grandifolia Linnaeus was reported from Dade County, Florida, by T. Darling Jr. (1961), the original find probably occurring in 1952 (E. T. Wherry 1964) and representing either an escape from cultivation or plants merely persistent from cultivation. Recent searches throughout the original location have failed to turn up extant populations; probably the plants have disappeared.

Selected References

None.

Lower Taxa

None.
Clifton E. Nauman +
Hooker +
decurrent +  and acute +
not articulate +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
scaly +, pubescent +, sometimes +  and glabrous +
5-parted +, divided +  and ovate +
6cm;25cm +
White-lined cretan brake +
Fla. +  and natural range uncertain (see discussion of species) +
yellow +  and white +
obcordate;reniform +
Terrestrial or on rock on wooded slopes or shaded limestone ledges and sink margins in circumneutral soil +
monomorphic +
clustered;closely spaced +
recurved +  and reflexed +
conspicuous +
noncircinate +  and circinate +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
darker;straw-colored;light-brown distally +
scaly +  and glabrous +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
spiny-serrate +  and serrulate +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
fertile +  and sterile +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
dark-brown;chestnut-brown +
persistent +
elongate +
Introduced +
intramarginal +
1 +, 32 +  and 64 +
tetrahedral +
not lustrous +
creeping +  and erect +
slender +
pale green +  and white +
Pycnodoria cretica +
Pteris cretica var. albolineata +
Pteris cretica +
variety +
0.15 cm1.5 mm <br />0.0015 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
crescent--shaped +  and roundish +
on rock +  and terrestrial +